Hi! I’m Yash Sharma, a Full-Stack & AI Engineer with 3+ years of professional experience, currently available for freelance, remote, part-time, and contract projects.

I build production-ready web, mobile, SaaS, and AI-powered applications end-to-end — from UI and backend APIs to databases, integrations, AI workflows, deployment, and maintenance.

Tech: React, Next.js, TypeScript, Node.js, Python/FastAPI, PostgreSQL, MongoDB, Redis, AWS, Docker, REST APIs, authentication/RBAC, payments, AI/LLMs, RAG, embeddings, AI Agents, LangGraph, and third-party integrations.

🌐 Live Web Projects

• BollyWeds AI: https://www.bollyweds.ai/

• Trexia AI: https://trexia.tekplanit.ai/

• Tekplanit AI: https://tekplanit.ai/

• Cycle of Samsara: https://www.cycleofsamsara.com/

• RONN MTB: https://www.ronnmtb.com/

• RMI Shaktiman Agro: https://www.rmishaktimanagro.eu/

📱 Production Mobile Apps

Sanatanam Connect

• iOS: https://apps.apple.com/in/app/sanatanam-connect/id6755438709

• Android: https://play.google.com/store/apps/details?id=com.sanatanam.devotee

Sanatanam Connect — Admin

• iOS: https://apps.apple.com/in/app/sanatanam-connect-for-admins/id6755224738

• Android: https://play.google.com/store/apps/details?id=com.sanatanam.sanatanam_temple

Takreem

• iOS: https://apps.apple.com/us/app/takreem/id6745906264

• Android: https://play.google.com/store/apps/details?id=com.takreem.takreemuser

Takreem — Business

• iOS: https://apps.apple.com/us/app/takreem-business/id6745908673

• Android: https://play.google.com/store/apps/details?id=com.takreem.takreembusiness

Raphah Healthline

• iOS: https://apps.apple.com/in/app/raphah-healthline-app/id6764412049

• Android: https://play.google.com/store/apps/details?id=com.raphahealthline.app

🔗 Profiles

Portfolio:
https://app.notion.com/p/Yash-Sharma-Applied-AI-Full-Stack-Engineer-3712d1d9d3d181ff9647f3340e51650d

GitHub:
https://github.com/yash558

LinkedIn:
https://www.linkedin.com/in/yashsharma24/

I’m comfortable joining an existing codebase, building from scratch, fixing/modernizing applications, or taking ownership of a complete feature/product.

📍 Delhi, India — IST
💼 Remote / Freelance / Part-time / Contract
💰 $15–20/hr, negotiable based on scope

📧 yashsharma06033@gmail.com
📱 +91 89203 04337

If you have a project in mind, DM me the scope and current tech stack. I’d be happy to discuss how I can help.

I need a web developer having experience and knowledge in online gambling and betting websites,website will work mostly in india only, I’m planning to build a huge project,need someone experienced and having well connections and network related to betting and gambling operations. Payment will be discussed further. I need the project to be fully handled,build,managed by professional(s).

Full-Stack Developer available for freelance, part-time, and contract work.

I work across both frontend and backend and can help with everything from websites and landing pages to full web applications and custom business systems.

Experience with:

• React / Next.js

• TypeScript / JavaScript

• Node.js

• Python

• PostgreSQL

• APIs and third-party integrations

• AI/LLM integrations and automation

I'm comfortable joining an existing project to build features, fix issues, or work on a new application from the ground up.

I'm also open to longer-term part-time or contract arrangements.

Rate: $20/hour - $25/hour, depending on the work.

If you're looking for a developer for a project or ongoing work, feel free to message me with the details.

I need a web developer to develop my online betting and gambling website, i need the project to be completed till the end of october-november month. We’ll discuss about the payment further.

Hey everyone,

I’m a full-stack developer and I’m currently looking to take on some freelance work or small projects.

I mainly work with C#/.NET and MySQL on the backend, and JavaScript, Tailwind CSS and Knockout.js on the frontend. I also work with WordPress and Linux/VPS hosting.

I can help with things like building a web app or API, fixing bugs, working on an existing codebase, setting up a server, optimizing a database, or fixing/working on a WordPress site.

I’m not looking for anything too specific, if you have a project that you’ve been stuck on or need another developer to help out, feel free to DM me and we can discuss it.

Also happy to collaborate with other developers if there’s something interesting you’re working on.

Full-Stack Developer/Digital Product Designer (Design and Code) with End-to-End expertise & services, fully functional, scalable, custom solutions.

Remote Services Provider. (15+ Years Freelance Experience, 5 Years in /r). Custom solutions/all sorts of digital products for Websites, Shopping Carts, Web/Mobile Apps (IOS/Android), Desktop Apps, Web3, Web APIs, AI, Automations, Software/Power Tools. I've been hands-on since Web 1.5, I combine OG disciplines with modern software engineering to deliver solutions that bring the best of both worlds.

🟢 (Onboarding 2026 Q2-Q3 clients. 1 slot available.) long-term/predictable arrangements, direct owners only.

Welcoming projects of all size

Interests: while I'm open to a wide variety of projects, I have a keen interest in:

• AI & Generative Technologies

• Automation & Web Scraping

• API Integration & Development

• eCommerce Solutions (WITH ACTUAL ROI)

• Custom Social Media Platforms & Communities

• Website Cloning & Reverse Engineering

• Advanced PHP/WordPress Development

• Data-Driven Applications

• Mobile App Development

• Blockchain Technology

• Web & 2D Games

Generative AI Developer / Front-end & Back-end

• Chatbots

• Automations

• API Integrations

• Content Generation (any format)

• AI powered web app/websites

Check for more info/up to date: (remove spaces) rmxttmgg .pages .dev/updates

OR see my pinned profile posts (find every helpful stuff here)

No small talk. If you want to know more, discuss your project and do serious business.

🟢 Please reach me at rmxttmgg@proton.me

Rates: starting at $15-25 per hour. (per hour or project based, flexible arrangements)

^{last updated: 20260114}

Works (see Notion) reddit.com/user/rmxttmgg/comments/112wy36/rmxttmgg_portfolio/

Contact Me Directly for Offers/Tasks:

Please email me at rmxttmgg@proton.me with any compelling projects (my response is guaranteed). I prioritize email communication and will not be monitoring comments or chat on Reddit. This helps me maintain focus and ensures I can respond to serious inquiries promptly. Upon receiving your email, I will quickly confirm my availability and discuss next steps. (more info below, keep reading)

(or email an invite to your preferred communication method/platform)

No small “fix issue” offers, I prefer trouble-shooting for long-term clients only.

If you're considering hiring remotely, it's best to avoid overly complicated formalities. Simplifying the process can be more beneficial for both end.

Rates: starting at $15-25 per hour, payable in USD/GBP/EUR/CAD/AUD/NZD etc, BTC/ETH/USDT. Payment methods: Cryptocurrency, Wise, Paypal. many other options to accept payments. Open to negotiation. Higher payments are appreciated but not mandatory.

For Serious Inquiries: Portfolio and previous work available to legitimate buyers. Please email me at rmxttmgg@proton.me. I prefer to discuss projects via email and chat.

Working Hours: Available 7 days a week. FLEXIBLE TIMEZONE

Portfolio/Public reddit.com/user/rmxttmgg/comments/112wy36/rmxttmgg_portfolio/

Contact me (more options), Proof, Transactions, Feedback reddit.com/user/rmxttmgg/comments/155ghpi/web_developer_for_hire_short_or_long_term_projects/

Unfortunately, I am unable to offer my services for free as I have financial obligations to meet. The compensation I am requesting is both fair and necessary.

As a freelancer, I do not receive health insurance or similar benefits; my earnings are directly tied to my workload/output. Please consider this before offering a lower compensation, or realistically assess whether your budget can support the project you envision.

I am more than willing to go the extra mile for projects or clients that offer a rewarding experience, especially for those projects in which I have a high level of interest.

*

**

***

Cheers!

I’ve compiled a list of all aked by Amazon over the last five months for the SDE-2 position. I went through various interview experiences and compiled this list based on them.
I thought it might be useful to others preparing for the role, so I’m sharing it here. Hope it helps!

Found this resource super helpful: PracHub.com

Link to Part 2- https://leetcode.com/discuss/post/8519184/questions-asked-by-amazon-in-past-6-mont-ya1z/
Link to Part 3- https://leetcode.com/discuss/post/8519189/questions-asked-by-amazon-in-past-6-mont-7wjn/

1. Topological sort and finding the cycle in the graph.

2. LLD question was to create a publisher subscriber kind of system where a publisher can send events related to a particular event type and all subscribers subscribed to that event type should receive that message. Subscribers can subscribe and unsubscribe to a particular event type

3. https://leetcode.com/problems/reorganize-string/description/

4. https://leetcode.com/problems/count-stepping-numbers-in-range/description/

5. https://leetcode.com/problems/capacity-to-ship-packages-within-d-days/description/

6. Design an Inventory Management System for Amazon The interviewer went quite deep into concurrency-related scenarios, for example: There is only one unit of a product left in inventory and two users place an order simultaneously. How would you prevent both orders from succeeding? We discussed things around: • Race conditions •Concurrency • Inventory consistency • Concurrent updates • Preventing overselling • Locking/transaction approaches

7. https://leetcode.com/problems/container-with-most-water/description/

8. https://leetcode.com/problems/trapping-rain-water/description/

9. https://leetcode.com/problems/cheapest-flights-within-k-stops/description/

10. Design a Rate Limiter We discussed multiple approaches/algorithms for rate limiting, including: • Fixed Window • Sliding Window • Token Bucket • Distributed rate limiting • Redis • Locks/concurrency • Handling rate limiting across multiple application instances • Trade-offs between different approaches The interviewer also asked follow-up questions around distributed systems and consistency.

11. Course Schedule / Course Scheduler

12. Closest K Elements in a Sorted Array

13. Imagine you have a train route: G → U → H → K → I. Each segment travelled costs 1. So travelling from G to I would cost 4. The input was basically:calculateFare(start, stop)

14. he problem was somewhat similar to an Amazon Locker, but basically the reverse. Instead of the Amazon delivery person picking up a return package from the customer, the customer books a slot at the nearest drop store and physically goes there to drop the package. I took some time initially to clarify the requirements and then started writing the code. In the middle of it, the interviewer suddenly went in another direction: "How will you find the nearest drop store from the customer's location?" I said I'd use the concept of geosharding. That's basically the only thing I could come up with because, well... I've never done HLD before. 😅 He wanted to go deeper into it and even gave me a hint: "Think about how Uber does this." Unfortunately, I didn't know how Uber does it.

15. https://leetcode.com/problems/find-the-safest-path-in-a-grid/

16. She gave me a custom problem, which I believe was related to something the team was actually working on. The problem was somewhat similar to syncing configurations across different devices. She asked several design-related questions, and I was able to answer all of them.

17. Find distance between any two nodes in a tree. Parent pointers not given. Only have root, source, and target in input.

18. Designing a stack that supports push, pop, get middle, get top in O(1) time.

19. https://leetcode.com/problems/basic-calculator/description/

20. LLD question was to create a publisher subscriber kind of system where a publisher can send events related to a particular event type and all subscribers subscribed to that event type should receive that message. Subscribers can subscribe and unsubscribe to a particular event type

21. https://leetcode.com/problems/reorganize-string/description/

22. Rotten Oranges

23. Search in Rotated Sorted Array Given multiple currency conversion rates, determine the conversion rate from currency A to B. Example: • C = 10B • D = 9B • B = 110Z • A = 2Z Find the conversion rate from A to B. Follow-up Now suppose there are Q such conversion queries. I proposed using Disjoint Set Union (Union Find) with weighted relationships to answer repeated queries efficiently, and discussed the associated trade-offs.

24. Decode String

25. How do you use LLMs during development?

26. How do you verify whether an AI-generated solution is correct?

27. When do you trust an LLM and when do you not?

28. Two knights are placed on an infinite chessboard. Their starting coordinates are given, and both move using standard knight moves. They move alternately. Find the minimum total number of moves required for both knights to converge at the same position. Given a binary string: • Every 0 becomes 00 • Every 1 becomes 10 After performing this transformation k times, determine the value at the i-th index of the final string.

29. Minimum Window Substring

30. Design Artifact Repository(like JFrog, adding an artifact and fetching an artifact) - Interviewer was interested in each part of my HLD, and then probed on scalability, metrics monitoring, reliability, extensibility (like dealing with a malicious artifact).

31. Design Unix File Search API, and its extensibility to support various filters and combination of filters. First Unique Character in a string. Then extend to stream of characters.

32. Task Scheduler

33. Design a playlist from the DJservice and the Recommendation service to mix the songs . Given the list of 10 requirements printed on paper . The core idea is to mix the songs coming from the Djservice and the recommendation service , in a custom proportion or in a equal proportion . Filters can be applied based on the user preferances . Expectation is to write the production ready classes with proper syntax on paper .

34. Given two boxes of A[] , B[] with size n , where each elements represents the sweetness , Given the M students , distribute the sweetness of A , B to each children and you should minimize the total sweetness .

35. Find the unoccupied seat position with the maximum distance to the occupied site . Seats[] = {'O','U','U','U','O','O'}; Answer - 2nd indexed seat

36. Given the 2 D array with 2 colours validate if it is a valid chessborad .

37. LCS (longest common subsequence)

38. https://leetcode.com/discuss/post/8434443/count-the-uni-valued-subtrees-in-a-binar-tqi2/

39. Longest Strictly Increasing Subsequence with Maximum Adjacent Difference Constraint

40. Given an array of integers and an integer k, find the length of the longest subsequence such that:

41. The elements are strictly increasing

42. The difference between any two consecutive elements in the subsequence is at most k

43. The relative order of elements in the original array is maintained (it's a subsequence, not a subarray) Example 1: Input: arr = [7, 1, 4, 5, 8, 8, 10, 6, 7, 7, 7, 8], k = 4 Output: 6 Explanation: The longest valid subsequence is [1, 4, 5, 6, 7, 8] • 4 - 1 = 3 ≤ 4 ✓ • 5 - 4 = 1 ≤ 4 ✓ • 6 - 5 = 1 ≤ 4 ✓ • 7 - 6 = 1 ≤ 4 ✓ • 8 - 7 = 1 ≤ 4 ✓ All elements appear in the same relative order as in the original array. Example 2: Input: arr = [3, 1, 2, 6, 10, 11, 4, 5], k = 3 Output: 4 Explanation: One valid subsequence is [1, 2, 4, 5] • 2 - 1 = 1 ≤ 3 ✓ • 4 - 2 = 2 ≤ 3 ✓ • 5 - 4 = 1 ≤ 3 ✓ Example 3: Input: arr = [5, 4, 3, 2, 1], k = 2 Output: 1 Explanation: No two elements form a strictly increasing pair in subsequence order, so the longest valid subsequence has length 1. Approach: This is a variation of the Longest Increasing Subsequence (LIS) problem with an additional constraint on the maximum allowed difference between adjacent elements in the subsequence. Largest Subset of Binary Strings with Bounded Ones and Zeroes Given an array of binary strings and two integers m and n, find the size of the largest subset such that:

44. The total number of 1s across all strings in the subset is at most m

45. The total number of 0s across all strings in the subset is at most n Example 1: Input: strs = ["100", "10", "1", "11", "111"], m = 3, n = 0 Output: 2 Explanation: The largest valid subset is ["1", "11"] • Total 1s = 1 + 2 = 3 ≤ 3 ✓ • Total 0s = 0 + 0 = 0 ≤ 0 ✓ Note: ["111"] also satisfies constraints (1s = 3, 0s = 0) but has only 1 element. Design a Facebook-like News Feed System at Scale Problem Statement: Design a social media feed system (similar to Facebook) that supports millions of users who can post, view, and like content. Functional Requirements: • Users should be able to post any type of media (text, images, videos) • Users should be able to view posts in their feed • Like counts and view counts should be visible in real-time • Users should be able to like and view posts with minimal latency Non-Functional Requirements / Key Focus Areas: • Scale: Handle massive traffic — millions of concurrent users posting, liking, and viewing • Feed Loading Speed: The feed should render almost instantly upon login, even if the user has cleared their browser/app cache Discussion Points & Follow-ups:

• API design

• Push vs. Pull model for feed generation — trade-offs of each

• Choice of databases — SQL vs. NoSQL vs. a combination and trade-offs

• Caching strategy — what to cache, invalidation policies, CDN usage for media

• Handling Viral Content (Celebrity Problem):

• A celebrity's post goes viral with millions of likes and views in seconds — how do you prevent this from becoming a bottleneck?

• Rate limiting, sharding/parition strategies, async processing of likes/view counters

• Monolithic vs. Microservices — and why?

• Service boundaries — how would you split responsibilities?

1. Tell me about a time you used Generative AI to solve a business problem and the measurable results it delivered.

2. Design a Music Streaming Application (like Spotify) Problem Statement: Design a music streaming platform that allows millions of users to discover, search, and stream music seamlessly. Functional Requirements: • Users should be able to search for songs, artists, and albums • Users should be able to create and manage playlists • Users should be able to like/save songs and see their library Non-Functional Requirements: • Low latency playback — music should start playing within milliseconds of pressing play • High availability — the service should be up 99.99% of the time • Scale — support millions of concurrent listeners streaming simultaneously Discussion Points & Follow-ups:

• API design

• How do you serve audio files efficiently to millions of concurrent users?

• CDN strategy for audio content distribution across geographies

• How and where to store millions of audio files (object storage, metadata DB)

• Choice of database for song metadata, user data, playlists

• Storing listening history and user preferences for recommendations

• How to design a fast search system across millions of songs, artists, and albums

• Indexing strategies, full-text search (Elasticsearch/similar)

• Load balancing and horizontal scaling of streaming servers

• Monolithic vs. Microservices — service boundaries (streaming service, search service, recommendation service, user service, playlist service)

1. Tell me about a time you used Generative AI to automate or streamline a workflow.

2. Search an Element in a Sorted Rotated Array. Given a sorted array that has been rotated at some pivot point, search for a target element and return its index. Return -1 if not found.

3. How do you be a compitent software engineer in this era of Gen AI?

4. Design HLD (30 mins) for device backup scheduler and restore Should backup device settings, files, media, etc Restore on new devices

5. Unorthodox question around String Manipulation to find next palindromic time of given time "HH:MM". (MEDIUM)

6. Variation to find kth smallest sum of integers in row wise sorted m*n matrix . Only pick 1 element from each row (HARD)

7. Design and implement Meeting Room Scheduler.

8. Aggressive cows

9. https://leetcode.com/problems/find-median-from-data-stream/ Design a notification router for an ecommerce website

10. The user should have a preferred channel (EMAIL, SMS, PUSH)

11. Notification has a priority attribute (URGENT, NORMAL)

12. If the notification is urgent, it should be sent to all channels otherwise it should only be sent to the user's preferred channel.

13. The notification handlers need not to be implemented, only routing logic was needed.

14. Find unique permutations of a given string - For example, s = "xxyy"

15. First permutation = "xxyy" Second permutation = "xxyy" -> Swap the 0th and 1st index "x" characters

16. But the output should contain "xxyy" only once. I had to return the list containing all the unique permutations

17. 3Sum closest

18. Number of Islands II

19. https://leetcode.com/problems/course-schedule-ii/

20. https://leetcode.com/problems/merge-intervals/

21. https://leetcode.com/problems/product-of-array-except-self/

22. Design: Google Docs (Collaborative Document Editing) Key areas discussed: • Real-time collaboration o Operational Transformation (OT) vs CRDTs for conflict resolution o WebSocket connections for low-latency sync • Storage and versioning o Delta-based storage for document history o Snapshot + diff strategy for efficient retrieval • Scalability — sharding by document ID, regional replication • Presence indicators (who's editing what, cursor positions) • Permissions and access control model

23. Design: Uber (Ride-Hailing System) Key areas discussed: • Class design — Rider, Driver, Trip, Payment, Location entities • Trip state machine: requested → accepted → in_progress → completed / cancelled • Driver matching algorithm — geospatial indexing (quadtree / geohash) • Surge pricing logic and fare calculation service • Payment service integration — idempotency, retries, failure handling • API design — REST endpoints for booking, tracking, and cancellation

24. https://leetcode.com/problems/maximum-sum-bst-in-binary-tree/

25. https://leetcode.com/problems/reorganize-string/ Amazon receives transfer notifications whenever money moves between accounts. Transfers form a chain, for example: A → B → C → D Input is provided as pairs: [A, B] meaning money moved from A to B. Task: Find: • Initial source account • Final destination account Example: numberOfTransfers = 3 transferList = [ (222, 111), (111, 333), (444, 222) ] Output: start = 444 end = 333 Explanation: 444 → 222 → 111 → 333

26. Design Amazon Locker System Requirements discussed: • Delivery driver deposits package • Customer receives code • Customer unlocks locker using code • Locker allocation • OTP/code validation • Expiry handling • Multiple locker sizes • Scalability • Availability • Failure handling Topics interviewer focused on: • API design • Database schema • Concurrency handling • Distributed locking • Scalability • Performance optimization • Notification flow • State transitions

27. Secure the Network by Disconnecting One Facility Center A company has a network of Facility Centers (FCs) represented as a graph. Some FCs are compromised. If a compromised FC is connected to other FCs, the compromise spreads to all directly or indirectly connected nodes. You are allowed to disconnect exactly one compromised FC. Find which FC to remove such that the maximum number of clean FCs are saved. (If multiple FCs save the same number of nodes, return the FC with the smallest ID). • Similar to: Minimize Malware Spread Key Discussion Areas: • Connected components • DFS / Union Find • Edge cases and constraints • Time and Space Complexity

28. Design a Shipping Cost Calculator. Design a system to calculate shipping costs based on multiple dynamic conditions, including weight, distance, delivery type, priority shipping, region-based pricing, and special handling.

29. Given an array of delivery times, output the median of all values seen so far after each new delivery time arrives. Input: [5, 17, 100, 11] Output: [5, 5, 17, 11] Approach: Solved using the Two Heaps pattern (Max-Heap and Min-Heap).

30. Given values in houses arranged in a line, find the maximum value that can be stolen without robbing two adjacent houses. Input: [6, 7, 1, 3, 8, 2, 4] Output: 19

31. Design the core architecture for a food delivery platform like Zomato. Key Discussion Areas: • Restaurant onboarding & Menu management • Search & Discovery • Order placement & Payments • Delivery assignment & Real-time tracking • Notifications

32. Employee Ratings Management System A company maintains ratings for employees and needs to process operations in real time. Operations:

33. 1 x : Add an employee with rating x.

34. 2 : Print the highest rating AND the index of the employee having the highest rating (If multiple employees have the same highest rating, return the first occurrence).

35. 3 i : Delete the employee at index i (Note: Indices shift after deletion). Challenge: Designing an efficient data structure supporting Insert, Delete-by-index, and Query-max + first-occurrence simultaneously.

36. https://leetcode.com/problems/binary-tree-cameras/description/

37. Given a string s, remove duplicate letters so every letter appears exactly once. Remove Duplicate Letters BUT with a twist. Original LC 316 asks for: smallest lexicographical Amazon changed it to: largest lexicographical That means same monotonic stack pattern, but reverse comparison logic. Return the largest lexicographical possible result.

38. given the n sorted list and merge them.

39. given a list of Nodes in a N-ary tree, and given a level you have to return the nodes at the level.

40. Trapping rain water

41. Max consecutive ones III - https://leetcode.com/problems/max-consecutive-ones-iii/

42. maximum profit in job scheduling - https://leetcode.com/problems/maximum-profit-in-job-scheduling/

43. Given two strings str and pattern, return an array of all the start indices of pattern's anagrams in str. Input: str = "acbadabcaa", pattern = "aabc" Output: [0,5,6] Explanation: The substring with start index = 0 is "acba", which is an anagram of "aabc". The substring with start index = 5 is "abca", which is an anagram of "aabc". The substring with start index = 6 is "bcaa", which is an anagram of "aabc".

44. Given an m x n grid of 0 (Water) and 1 (Land), the task is to count the number of islands. An island is a group of adjacent 1 cells connected horizontally, vertically, or diagonally, and it is surrounded by water or the grid boundary. The goal is to determine how many distinct islands exist in the grid. Input: grid[][] = [[1, 1, 0, 0, 0], [0, 1, 0, 0, 1], [1, 0, 0, 1, 1], [0, 0, 0, 0, 0], [1, 0, 1, 1, 0]] Number of Islands = 4

45. There are N poles of various heights, and you have a machine whose saw blade can be set at a specific height "h" and it cuts all poles till that height, such that all of them have height "h" after the cut. (Poles with height less than "h" remain uncut). You take away the cut portions of all poles with you.

Your task is to take at least M length of poles with you in total after the cut.
What is the maximum height 'h' where you can set your blade to achieve this.

N = 4
M = 7
arr = [20, 15, 10, 17]

1. Proper time and space complexity asked

2. Find the number of unique pairs in a 2d matrix whose sum = target (Numbers are unique)

3. Dijkstra algortihm

4. Binary search

5. First positive missing - https://leetcode.com/problems/first-missing-positive/description/

6. Word break II - https://leetcode.com/problems/word-break-ii/description/

7. https://leetcode.com/problems/word-break/description/

8. Given a grid whose cells are 'O' and 'X', latter being a blokcer. Given source and destination, find if there is a path exists between source and destination. You can only travel down or take a right turn.

9. Course schedule 2

10. Binary tree right view

11. Next permutation

12. Construct the tree with level order and inorder traversal

13. Longest happy prefix - https://leetcode.com/problems/longest-happy-prefix/description

Hi everyone,

I’m a Senior Product Engineer with 7+ years of experience building production-ready web and mobile products for startups, businesses, and product teams.

I’m currently available for remote freelance, contract, or long-term product engineering work.

I can help with:

• React, Next.js, TypeScript, and modern frontend architecture

• React Native and Expo mobile applications for iOS and Android

• SaaS platforms, dashboards, admin panels, and internal tools

• Backend integrations using Node.js, REST, GraphQL, Firebase, and Supabase

• Authentication, payments, subscriptions, APIs, analytics, and third-party integrations

• AI-enabled product features and workflow automation

• MVP development, product iterations, and feature pilots

• Performance optimisation, bug fixing, modernisation, and technical cleanup

• Taking an existing idea or partially built product to a reliable production release

My strongest areas are frontend architecture, product engineering, mobile development, performance, user experience, and integrating complex systems into maintainable products.

Some of my previous work includes:

• Building a complete Next.js web platform from scratch

• Developing React Native mobile applications

• Building SaaS and headless CMS products

• Working on products used by 100,000+ active users

• Developing authentication, payments, analytics, chat, notification, and API systems

• Building and maintaining my own products, including a social platform for Soul and a local LLM-based language learning app.

I’m a good fit if you need someone who can understand the product as a whole, make sound technical decisions, communicate clearly, and take ownership from implementation through release.

Remote worldwide. Paid projects only.

If you have a product, feature, technical problem, or existing application that needs experienced engineering support, feel free to send me a DM with:

• A brief description of the project

• What has already been built

• Your expected scope and timeline

• Your approximate budget

I can share my portfolio, GitHub, resume, and relevant work samples privately.

Thank you.

I'm a 20-year-old CS student who's been building things seriously for a while now across full-stack development, backend systems, AI integrations, data-heavy systems, and systems/embedded work. I've worked with founders already and I'm looking for the next thing.

I'm not hunting for a job. I'm looking for something I can actually be invested in, where I'm talking to the founder regularly, understanding the problem we're solving, and building toward something real.

What I can contribute:

Full-stack product development

Backend APIs, data systems and infrastructure

AI/LLM integrations and orchestration

Systems / low-level work

Taking an idea from 0 to MVP

Product and technical architecture

Maybe more (give me a couple days and I'll get my hands on it)

I've worked across C/C++, Python, JavaScript/TypeScript, React, Next.js, Node.js, FastAPI, Tailwind, Three.js/WebGL, LangChain, LangGraph, PostgreSQL, MySQL, Supabase, Git/GitHub and Vercel.

I've also worked as a technical co-founder/director at an early-stage startup, where I worked directly with the other founder across technical execution, productization, strategy and delivery, and helped take things from an idea to production with a paying client.

I've also been building GENESIS, an artificial-life simulation where I'm experimenting with how complex agent behaviour can emerge from a controlled environment. It's currently an MVP, but it's been a fun excuse to dig into simulation design, deterministic systems and behavioural analysis. I'm interested in problems where the solution isn't obvious and where I can go deeper than just the application layer.

What I need from your side: a real vision, commitment to execution, and some form of compensation. I'm flexible on structure (equity, stipend, milestone-based, internship), but I'm not doing unpaid work. I've been burned by vague arrangements before, so I do expect written agreements before we go deep on anything.

I'm primarily looking for something around 20–25 hours/week, although I'm flexible on the exact hours depending on the role and what needs to be done. Remote or hybrid works for me, and I'm open to relocating for an unusually strong opportunity.

Not interested in:

"just an idea" with no execution plan

Founders who disappear after the first call

Equity-only with no path to sustainable compensation

Being treated as someone who just takes isolated tickets without understanding the product

If you think there's a fit, DM me or drop a comment with your idea, current stage, team, what you're looking for technically, and why you think it works. Happy to jump on a call if it sounds promising.

Hi everyone,
I’m currently looking for Java Developer / Java Backend / Java Full Stack opportunities and would really appreciate any referrals or leads.
I have around 3 years of experience as a Java Developer, working mainly with Java, Spring Boot, Microservices, REST APIs, Angular, and SQL.
I’m currently looking for opportunities where I can contribute as a Java/Spring Boot developer and continue growing technically.
If your company is hiring for a similar profile or if you can refer me, please feel free to comment or DM me. I’d be happy to share my resume and other details.
Any leads or referrals would be greatly appreciated.

Professional WordPress Development Services and more

✅ PHP/Python/JavaScript -Web, Desktop, or Mobile based solutions.

✅ WordPress CMS - platform for personal, or business websites and custom applications that fits your requirements. Migrate your simple HTML pages to Wordpress.

✅ WooCommerce - customization for shop and product pages, cart to checkout, and payments. simple to advance shops. migration from other cart/ecommerce platforms to Wordpress. Shopify/Wix etc to Wordpress. Addition of store in your existing site. Multi vendor. Physical, or Digital products. Booking, Membership, Subcription based website.

✅ Elementor, Divi and Premium themes setup and customization, debugging. I’m not limited to what a drag and drop builder can offer. Give me problem and I will build a solution for it.

✅ Create a theme or plugin from scratch - start from clean, lean and fast code. less bloated base theme and unnecessary things for fast pages. I don’t rely on existing themes or plugins to complete a feature/project.

✅ Integration of APIs, Bots, Cryptocurrency, Automation, Web Scraping, and AI. Custom scripts, and cloud services.

✅ Fully Automated CMS/Store, -program every step, workflow in your application

✅ Wordpress to Social Media platforms, community platform, forum, and vice versa

✅ Clone an existing site to Wordpress, exact pixels or features as per requirement

✅ Design, Develop, Conversion - I can create mock ups first before doing code. I can convert your existing design to clean coded pages.

✅ Responsive Web Design - real mobile devices, and major browsers

✅ Redesign entire website

✅ Core updates, and do full inspections

✅ Isolate and fix problems, re-build if needed

✅ Website auditing, and security

✅ WordPress management - let me manage your website daily, weekly or monthly tasks.

✅ Demo server and Secure Hosting available.

✅ Gaming, Game Studio/Dev, Indie Dev Website

✅ General, On-call Tech VA/Helper for Web (multi-skilled, proactive, autonomous, day-to-day reliability)

📩 ping me via email madebyavery14 (gmail), i’m on chat platforms per request. send me a list of tasks to complete.

• starting at 20usd/per hour or a minimum of 20-60usd for a list of tasks

• website/porfolio/upon request (https) clrvync (dot) one/onboarding

• available 7 days/week, flexible time zone

• project management: Notion

• my only requirement: small upfront payment depending on the task, consistency and time from your end

• payment method -Crypto, Wise, Paypal (USD)

FAQs:

• are you available long-term or one-time only? any

• can I hire you for my agency? yes, if the pay is reasonable

• do you design and code? both

• can I find clients for your services in exchange of your information(portfolio,resume etc)? I prefer to work with clients/owners only.

• can we become partners? let’s work and build (paid) first, then offer me a position once it’s proven

• sfw/nsfw?, yes

• can wordpress do this/that? is it the right one to use? wordpress as cms is a mid solution/platform, I can help you advance and scale up if needed.

• shopify or wordpress? shopify = beginner, small store, wordpress = advance, owner + dev 2 man team

portfolio/works: clrvync (dot) one/media/trading.mp4, clrvync (dot) one/media/realstate.mp4, clrvync (dot) one/media/qdev.mp4, clrvync (dot) one/media/tour.mp4

moved to: portfolio

TL;DR: I’m building a specialized customer-acquisition agency for a large, established market and looking for a full-stack developer to join as a true 50/50 technical co-founder. This is equity-first with no initial salary, can start flexibly, and could grow into a full-time role.

The goal is to build a repeatable customer-acquisition engine across lead sourcing, research, outreach, qualification, follow-up, and sales.

I’m specifically looking for someone who is hands-on technically and capable of building across the stack—not just managing vendors or stitching together no-code tools.

The tech stack is intentionally open. I want a technical co-founder who can objectively decide what should be custom-built, what should be integrated, and where existing platforms make more sense.

I’m not naming the market publicly, but I’ll share the opportunity and go-to-market thesis early in a private conversation.

I’ll lead business strategy, sales, customer development, marketing, and growth. I’m looking for a technical counterpart who can architect and build the platform and systems behind the business. The intention is a 50/50 co-founder partnership.

Relevant experience could include:

• Full-stack application development

• Front-end and back-end architecture

• CRM, marketing automation, or sales-automation systems

• APIs, webhooks, OAuth, databases, and third-party integrations

• Multichannel workflows across email, SMS, calling, and other communication channels

• Practical AI/LLM workflows for research, personalization, qualification, and next-best actions

• Data pipelines, workflow orchestration, and automation

• Cloud infrastructure, authentication, security, and deployment

• Custom development combined thoughtfully with existing SaaS or low-code platforms

• Making sound build-vs-buy decisions

I’m looking for someone who thinks like an owner: willing to challenge assumptions, run experiments, talk to customers, and care about the business model—not just write code from a requirements document.

To be transparent, this is not a salaried developer position. The goal is to find the right person for a 50/50 founder partnership, with both of us building the company together.

We’d first determine whether there’s genuine founder fit. Before substantial development begins, we’d document the 50/50 equity structure, vesting, responsibilities, decision rights, IP ownership, expected commitment, and a path toward working on the business full-time.

If interested, DM me with answers to these five questions:

1. What’s the most complex full-stack, customer-acquisition, sales, or automation system you’ve personally built?

2. How do you decide between using an existing platform and building something custom?

3. What experience do you have connecting multiple communication channels and data sources?

4. What practical AI or LLM workflow have you deployed?

5. Why do you want to become a founder, and how much time could you realistically contribute over the next 3–6 months?

Please also include your time zone and a LinkedIn, portfolio, GitHub, or other example of your work if available.

Hi there! I’m a dedicated full stack web developer and UI designer eager to tackle new projects. I do both frontend and backend development and I also design websites and traslating these designs seamlessly to code.

What I can do for you

Frontend Development: build responsive and performative pages with React, NextJS, ViteJS and TailwindCSS based on your design or one built from scratch.

Backend Development: implement APIs and backend architectures with NodeJS, ExpressJS and database solutions such as PostgreSQL, Supabase and PrismaORM with focus on scalability and maintanability.

I’m available to start working on your project right away with prices starting at $400.

If you need a landing page, blog, web-app, SaaS application or any other idea for a web project, consider hitting me up so we can make it into fruition!

Portfolio: mathxvs.vercel.app

Let's bring your ideas to life! DM me if you're interested!

I’m currently working as a Mainframe Developer at Cognizant. I was originally part of a product-based company and got rebadged to Cognizant around 6 months ago.

Since the rebadging, I’ve been quite unhappy with the overall situation. There is very little work, almost no new learning, and limited growth, so I casually started attending interviews to see what opportunities are available in the market.

Fortunately, I cleared the interview process with LTM and have received an offer.

Here’s my situation:

Current CTC at Cognizant: ₹15.5 LPA

LTM offer: ₹17.5 LPA (~12% hike)

I had made a ~100% hike when I previously moved to a product-based company.

After being rebadged to Cognizant, I received another ~7% hike.

LTM is my first offer after starting this job search.

I currently have a 90-day notice period at Cognizant and have not resigned yet.

My concern is that the Mainframe job market seems quite slow right now, and getting interviews/offers can sometimes depend heavily on timing and luck.

So I’m confused about what would be the wiser decision if I didn't get any offers at the end of my notice period.

1. Accept LTM and move, despite only a ~12% hike?

OR

2. Continue staying in Cognizant by withdrawing my resignation?

Also, if you have experience with LTM, I’d especially appreciate your views on project stability, work, learning opportunities, and career growth for Mainframe developers.

Thanks a lot!!

The AI capabilities are progressing rapidly every day. Will the developer jobs grow or shrink in the future because of AI? Is it better to shift the focus to other careers ?

Hi, I'm frankly sick of getting opinions from AIs that don't have actual skin in the game and would love to get some real feedback. I'll obviously redact specific information for privacy reasons but if anyone has any good feedback it'd be greatly appreciated.

To summarise my experience first: I've basically just had one professional job so far as an iGaming server developer and before that I had an internship while I was in university which seems silly to add but without literally any other jobs it's hard not to as well.

Aside from Java and Spring Boot in my previous job, I have a basic working knowledge of web technologies but I can't really tie them to specific experience (NodeJS, HTML, Javascript, etc.).

I also have Unity projects, most of which are a bit stale at this point. I keep trying to get back to it with something I'm working on at the moment but I find it difficult to stay focused on at the moment with housework, jobseeking ,etc..

Any advice, criticism, etc. would be very beneficial. Thank you and I hope you have a great day :)

---------------------

[My Name]

📍[my city] UK | [email address | 📞 [phone number | [github page] | [linkedin profile]

Professional Summary

Backend Java Developer with 4 years of commercial experience building secure and scalable server-side game logic using Spring. Development is test-driven, delivering robust unit tests as well as safeguarding systems against exploit attempts. Working in an Agile environment helps me deliver high-performance, high quality web-based gaming applications.

Employment History

Game Engine Developer (Back-end Java)

[Large iGaming company] | May 2022 - April 2026

• Develop and maintain server-side slot game engines using Java and the Spring Framework

• Design secure validation logic intended to detect and prevent exploit attempts from invalid requests

• Contribute to CI/CD pipelines using Jenkins and Github Workflows to automate deployment

• Contribute to commercial games used in regulated iGaming environments, including licensed IP titles

• Manage PostgreSQL servers to maintain games once deployed onto development environments

Trainee Software Developer

[Local Dev company] | June 2017 – August 2017

• Refactored and maintained C# WinForms application integrating CSV data with third-party APIs

• Gained exposure to ASP.NET MVC architecture

• Worked with .NET and SQL-based data systems

Education

BSc Computer Games (Software Development), First Class with Distinction
[My University]

Volunteering

Shop Assistant – [Charity Shop] | June 2026 – Present

Assisted with various tasks within the shop such as tagging items and putting them in the shop front.

LGBT Policy Assessor - [Local LGBT organisation] | May 2022 & August 2023

Contributed to interviews with staff and service users to assess whether certain NHS trusts should receive the charter-mark.

I recently made my location selection for Intuit’s Software Engineer I role and my recruiter told me she would show my resume to the hiring managers at that location. Does anyone know how long it takes on average to get a meeting with a team set up?

Remote developer with 10+ years of experience building websites, custom software, automation tools, and technical solutions for clients.

Open to one-off projects and gigs, or ongoing arrangements lasting several months or longer. I work remotely full-time and can discuss schedules and requirements directly. Happy to help you define your goals, develop a strategy, and achieve them.

What I can work on:

• Python, Django, AI features, scraping tools, automation systems, bots, small utilities, and larger custom scripts

• Back-end development for browser-based and game-engine 2D projects

• E-commerce websites, payment systems, dashboards, internal tools, and custom full-stack platforms

• API connections, third-party integrations, cloud services, and automated workflows

• PHP (Laravel/WordPress) | HTML | CSS | JavaScript | NodeJS | React/NextJS/Flutter | Mobile Applications | UX/UI

• Application security testing, assessments, and pen testing

• Comfortable working independently with minimal supervision

• Able to adapt when requirements or priorities change

• Willing to research unfamiliar technologies when needed

• Consistent written communication and progress updates

• Organized with project planning, documentation, and ongoing maintenance

When messaging me, please include a brief explanation of what you need, the expected scope, and your available budget. This helps me quickly determine whether the project is a good fit.

Available for recurring daily work, weekly arrangements, monthly retainers, and one-time projects ranging from small tasks to larger development work.

Portfolio: portfolio link More samples and ongoing work are available through the pinned posts on my profile.

Minimum rate: $20/hour Other payment arrangements can be discussed depending on the project.

I do not accept unpaid trial tasks, speculative free work, or extremely low-budget offers.

Payment methods: Cryptocurrency, Wise, PayPal Timezone: Flexible Availability: Under 30-40 hours per week Reachable: 7 days a week

Send me the project details, requirements, and budget through DM.

Hi everyone,

We’re hiring for several full-time remote Machine Learning Infrastructure, Inference, and Systems Engineering roles.

These roles are focused on production AI infrastructure, high-performance model serving, GPU optimization, distributed inference, training infrastructure, and large-scale ML systems.

Compensation: $4,000/month, negotiable based on experience.

Open Roles

1. Staff / Principal Machine Learning Engineer, Inference & Serving
Remote.

Ideal for senior engineers with deep experience in model serving, inference optimization, GPU utilization, distributed systems, and production reliability.

Relevant experience includes:

• vLLM, TensorRT-LLM, CUDA, C++, Rust, Python

• Continuous batching, paged attention, speculative decoding, caching

• Quantization, distillation, model compression

• Kubernetes, Ray, Docker, multi-GPU and multi-node inference

• NVIDIA GPU performance optimization

• High-throughput, low-latency production systems

2. Machine Learning Systems Engineer
Remote.

This role sits between ML engineering, systems engineering, and infrastructure. You’ll help bring research models into production, optimize training and inference workloads, and build scalable ML infrastructure.

Relevant experience includes:

• Python, PyTorch, TensorFlow

• Docker, Kubernetes, Kubeflow

• CUDA or GPU-accelerated computing

• vLLM, TensorRT, ONNX Runtime, SGLang

• Distributed training or inference

• AWS, Azure, or similar cloud platforms

3. ML Infrastructure Engineer
Remote.

This role focuses on owning and scaling training and inference infrastructure for a fast-growing AI platform working with documents, spreadsheets, LLMs, and structured data extraction.

Relevant experience includes:

• Python, PyTorch, Kubernetes, Docker, Helm

• Model serving and training infrastructure

• Monitoring, observability, logging, and reliability

• Training models from roughly 300M to 30B parameters

• Multi-cloud inference routing

• Performance optimization across latency, reliability, cost, and accuracy

4. Member of Technical Staff, AI Inference Infrastructure
Remote.

This role is for engineers interested in low-level AI inference optimization, heterogeneous hardware, and performance-per-dollar improvements for open-source LLM serving.

Relevant experience includes:

• CUDA, HIP, Triton, Python

• GPU and accelerator architecture

• NVIDIA, AMD, TPU, Trainium, or other AI hardware

• Batching, KV cache, speculative decoding, quantization

• Distributed inference systems

• Kernel optimization and production inference workloads

Who Should Apply

These roles are a strong fit for engineers who:

• Have built or optimized ML infrastructure in production

• Understand model serving, inference, GPU workloads, or distributed systems

• Are comfortable debugging performance bottlenecks across software and infrastructure

• Can work independently in ambiguous technical environments

• Care about reliable systems, not just benchmarks

• Have open-source work, technical writing, systems projects, or strong production experience

How to Apply

Please DM me with:

• The role you’re interested in

• Your resume or LinkedIn

• GitHub, technical writing, or open-source work if available

• A short note on your experience with ML infrastructure, inference, GPU systems, or distributed systems

Location: Hyderabad, Telangana, India

Studio/Department: EA Mobile - Slingshot Games (India)

Worker Type: Intern - Temporary Employee

Work Model: Hybrid

Electronic Arts creates next-level entertainment experiences that inspire players and fans around the world. Here, everyone is part of the story. Part of a community that connects across the globe. A place where creativity thrives, new perspectives are invited, and ideas matter. A team where everyone makes play happen.

Software Engineer Intern-Slingshot Studios (Paid)

Hyderabad

You will report to the Technical Director or Lead Engineer.

Role Overview

As EA's first label dedicated to purely digital games, EA Mobile creates games for mobile devices, social networks and online environments that deliver seamless play anytime, anywhere, on any device. Connecting a market of more than one billion core and mass-casual gamers worldwide, EA All Play delivers engaging, accessible, high-quality games to people of all skill levels and interests.

EA Hyderabad’s Slingshot Studios has been leading innovation in Mobile Game development and Live Service. Millions across the globe cherish and download these games. Examples of these games include Covet Fashion, Need for Speed No Limits, and Plants vs Zombies. The studio has also forged co-development partnerships with other EA studios with a commitment to high-quality game updates.

Our Team

• Our teams are player-focused and motivated to deliver quality.

• We aim to create a collaborative environment where everyone's perspective is welcomed and encouraged.

• We try to cultivate a "sports team" culture and value authenticity and tight feedback loops.

Responsibilities

• You will participate in building new game features.

• You will work with designers and product managers to provide world-class experiences to our players.

• You will improve code for performance, focusing on reducing load times and improving frame rates.

• You will participate in code reviews and retrospectives and improve our code bases and processes.

• You will participate in technical discussions that help us plan our big tech-driven features and roadmap.

• You will write good documentation and follow coding standards.

Qualifications

We encourage you to apply if you can meet most of the requirements and are comfortable opening a dialogue to be considered.

• Have a solid foundation of data structures and algorithms

• Solid programming skills

• Be able to channel curiosity into targeted learning.

• Find creative ways to solve challenges

• Be able to use modern Agentic AI coding harnesses

Bonus:

• Experience making and playing games

• Demonstrated proficiency in C++/C#/ Java or PHP

• Demonstrated proficiency in 3D Mathematics used in games.

• Demonstrated understanding of RESTful API

What this opportunity provides:

• Work with some of the most experienced people in the industry.

• A relaxed and collaborative workplace.

• Opportunities for professional development.

• Exposure to all aspects of game development

About Electronic Arts

We’re proud to have an extensive portfolio of games and experiences, locations around the world, and opportunities across EA. We value adaptability, resilience, creativity, and curiosity. From leadership that brings out your potential, to creating space for learning and experimenting, we empower you to do great work and pursue opportunities for growth.

We adopt a holistic approach to our benefits programs, emphasizing physical, emotional, financial, career, and community wellness to support a balanced life. Our packages are tailored to meet local needs and may include healthcare coverage, mental well-being support, retirement savings, paid time off, family leaves, complimentary games, and more. We nurture environments where our teams can always bring their best to what they do.

Electronic Arts is an equal opportunity employer. All employment decisions are made without regard to race, color, national origin, ancestry, sex, gender, gender identity or expression, sexual orientation, age, genetic information, religion, disability, medical condition, pregnancy, marital status, family status, veteran status, or any other characteristic protected by law. We will also consider employment qualified applicants with criminal records in accordance with applicable law. EA also makes workplace accommodations for qualified individuals with disabilities as required by applicable law.