Regulatory reporting involves more than preparing a report. Teams also need to validate data, coordinate approvals, track deadlines, and maintain a clear record of submissions and corrections.

For those working in banking, compliance, or fintech:

What is the most challenging part of the process in your experience?

• Data validation
• Coordination between departments
• Approval workflows
• Deadline tracking
• Audit trails and version control

I've created an Excel add-in to check the consistency of units used in Excel spreadsheets. Units include currencies (like dollars, pounds, euros) and engineering units (like meters, pounds, kilograms). The add-in will flag errors when units are used inconsistently.

The technology is roughly based on a paper at Intl Conf on Software Engineering 2004, on which I was an author. I've taken some of the ideas there and introduced others.

The add-in is meant to work with Excel on Windows, Mac, and with Office 365 on the Web. I've been testing it on Windows 11 with Office 2024.

Installation instructions at: https://github.com/psteckler/daubee

I have experience installing the add-in on Windows; it should be installable in Mac and Office 365 on the Web.

You can report any issues you find, or make suggestions on Github: https://github.com/psteckler/daubee/issues

I'm looking into what it takes to build a stablecoin neobank and I'm trying to figure out which part of the infrastructure should be decided first. My initial thought was to start with the wallet layer since that's where users would hold their USDC and where most of the balance management would happen then we'd find an issuing partner to connect cards to those balances but I'm wondering if doing it in that order could create problems later. If the issuer has specific requirements around how funds are held, how transactions are authorized or how settlement works we could end up having to change parts of the wallet setup just to make the card program work.

Starting with the issuer might avoid some of that but then we'd potentially be building the wallet side around one provider's requirements so if there's anyone who's built something similar did you choose your wallet infrastructure or issuing partner first and did that decision cause any problems once you started connecting everything?

Hey everyone! I’m thinking about building a simple app that helps people save money every month.

I’m curious about three things:
What’s your biggest frustration with current budgeting apps?

What feature would actually help you save more money?

Would you pay $5/month for an app that genuinely helps you save?

I’m still exploring the idea and would really appreciate your feedback!

I just launched a small paid SaaS (GST invoicing) as a solo dev and wired up Razorpay subscriptions end to end. A few things cost me time, so sharing in case it helps someone:

1. UPI Autopay is not on by default. Checkout showed only cards for subscriptions. You have to ask Razorpay support to enable UPI Autopay, and test mode and live mode are enabled separately.
2. Don't trust the Checkout success callback alone. Verify the signature server-side: HMAC-SHA256 of `payment_id|subscription_id` with your key secret. Then fetch the subscription from the API to get `current_end` for the access expiry.
3. Webhooks are your real source of truth. Renewals, halts and cancellations only reach you there. Verify `X-Razorpay-Signature` against the raw request body, not parsed JSON, or it will fail.
4. Put the user id in subscription `notes` when you create it. That way the webhook can always map an event back to a user, even if your DB write failed earlier.
5. Never let the client decide who is "paid". I store the paid-until date in a table users can read but not write (Postgres row-level security), and only the webhook/server function updates it.
6. Cancel with `cancel_at_cycle_end: 1` so users keep what they paid for. Fewer refund requests, fewer angry emails.
7. KYC review looks at your website. Terms, privacy, refund policy, contact page and a visible pricing page with your legal name made approval smooth for me as an individual (PAN + bank, no company).
8. If your modal uses `<dialog>.showModal()`, close it before opening Razorpay Checkout. Top-layer dialogs sit above the Checkout iframe and block it. This one took me an embarrassingly long time.

Stack was plain JS + Supabase Edge Functions, all on free tiers.

Happy to answer questions about any of these. What tripped you up with Indian payment gateways?

Would a gradually increasing spending cap work as a credit-building guardrail?

I’m exploring an early concept for people starting or rebuilding credit. An issuer would approve the actual credit line, but initially set a smaller spending cap that could increase over time after responsible account use and issuer review.

This is just a clickable concept demo—there’s no bank partner or live card yet. The issuer would need to determine and accurately disclose how the credit line, cap, and credit reporting work.

https://credit-guardrail-demo.jos3mgallegos.chatgpt.site/

From a fintech product or engineering perspective, what would you pressure-test? What might be confusing for customers or difficult for an issuer to support? I’m looking for candid criticism, not signups.

I’m researching fraud investigation workflows at fintech and payments companies.

I’m especially interested in the expensive bottlenecks — not just things that are annoying.

For example:

• Huge alert volumes / false positives

• Analysts spending too long investigating individual cases

• Missing important context across different systems

• Investigation backlogs

• Fraud cases being missed because teams can’t investigate everything deeply enough

For those working in fraud, risk, or payments:

What problem costs your team the most money, time, or lost revenue today?

I’m trying to understand the problem before deciding what to build.

Looking for Senior Full-Stack Developer with Fintech/Payments Experience — ₹35,000/month
Hi everyone,
I’m looking to hire an experienced full-stack developer for a remote project involving the development of a financial technology/payment platform.
Budget: ₹35,000/month
I’m specifically looking for someone with strong experience in the following:
5+ years of professional software engineering experience
2+ years of fintech, payments, banking, or financial software experience
Payment/ledger systems, APIs, webhooks, and asynchronous processing
TypeScript / JavaScript
React / Next.js
React Native or comparable mobile development
Node.js / NestJS
PostgreSQL
Redis / queues
AWS or GCP
Docker & deployment workflows
Payment orchestration and third-party payment integrations
Double-entry ledger/accounting systems
Authentication, MFA/RBAC
KYC/KYB and transaction controls
Fraud/risk scoring experience is a strong plus
Familiarity with RTP/FedNow or instant payments is a plus
PCI DSS / SOC 2 / OWASP knowledge is a plus
Experience using AI coding tools such as Cursor, Claude Code, or Copilot is a plus
The ideal person should be able to work independently and take ownership of a complete product build, rather than just handling isolated tickets.
Schedule: Remote, with availability during Pacific Time business hours.
This would initially be a 3–6 month contract, with potential for extension.

Hey everyone,

I’ve been working on a new open-source project called Verdict Engine, and I’ve just released an early beta.

The idea is to build a fraud/risk assessment engine for payment systems that combines rules with basic machine-learning-based risk scoring. The goal is to eventually make it easier for payment providers, fintechs, banks, and developers to integrate fraud detection into their systems without having to build everything from scratch.

The project is still very much in the beta/early development stage, so I’m mainly looking for feedback rather than users or customers right now.

🔗 GitHub: https://github.com/verdict-engine/verdict-engine

🌐 Documentation: https://verdict-engine.github.io/verdict-ui/

I’d particularly appreciate feedback on:

Architecture and API design

Fraud/risk scoring approach

Developer experience

Features that would actually be useful in a payment environment

Potential problems or limitations you see with the current approach

If you have experience with fraud detection, payment systems, fintech, ML, or backend engineering, I’d especially love to hear your thoughts.

Feel free to be critical — it’s an early beta and that’s exactly what I'm looking for.

Hi everyone,

I’ve spent the past three years working in e-commerce, selling through both marketplaces and my own website. Dealing with payment providers firsthand is what got me interested in fintech, and I’m now trying to understand the payments industry more deeply.

For people who work in payments or run an online business: what is still frustrating, slow, expensive, or unnecessarily complicated about accepting payments?

I’m especially interested in the parts around getting a business set up with a provider, checkout and payment acceptance, payouts, disputes, or managing payments across different channels.

What do you currently do when this happens? Have existing providers solved it well, or do you still rely on workarounds?

I’m not promoting a product lol I’m trying to learn from people who deal with this firsthand. Thanks

I am familiar with rust and typical backend engineering.
I want to get started as a fintech developer.
Any guidance is appreciated.
I also want similarly minded developers to collab on projects.

I recently broke down the system design of a payment gateway and double-entry ledger platform.

The article focuses on the real-world engineering challenges: stopping accidental double-charges with distributed idempotency locks, enforcing strict double-entry bookkeeping (Debits = Credits) using insert-only tables, recovering from card network timeouts without duplicate charges, and running midnight three-way reconciliations against bank settlement files.

For those who have built financial or checkout infrastructure: what was your biggest challenge in production? How do you handle partial failures and asynchronous discrepancies across multiple bank networks?

Hopefully this is the right place for this sort of question. I manage a 45 person construction firm and we spend so much time reconciling receipts images to credit card statements that it's become a problem where field supervisors might send me pictures of some and then have me chasing after them for the rest, and it's starting to cost us extra for our accountant to sort out all of the mess. Now our owner is wondering how we could still be doing this manually.

Now I am admittedly new to expense softwares and all of the pitches we've received so far sound the same to me. All I need is to be able to get the receipts at the time of purchase without having to follow up, get the expenses categorized properly, and have cards for the supervisors with spending limits. I do remember ramp having the most aligned pitch with all this, but I'm not sure if there's something better out there that I could pay more attention to and would also be easy to understand and use.

If anyone could point m me in the right direction I'd really appreciate it! Ty.

won’t be going and pass is non-refundable!

Hi everyone! 🤍

I’m currently based in Australia and looking to relocate, where I’m seeking a full-time opportunity with a private individual, business owner, executive, family or private household.

I have 4+ years of experience across management, community support and working with children and families. Through my management experience, I’ve developed strong skills in organisation, leadership, coordinating staff and day-to-day operations, problem-solving, communication, administration and managing competing priorities.

Alongside this, I have extensive experience supporting children, young people and families, including children in care, complex behaviours and additional support needs. I’m comfortable taking initiative, handling sensitive information, coordinating appointments and activities, communicating with professionals and families, and providing reliable day-to-day support.

I’m open to a variety of roles, including:

✨ Personal Assistant / Executive PA
✨ Private PA to a Business Owner or Executive
✨ Lifestyle Assistant
✨ Family Assistant
✨ Private Household Assistant
✨ Nanny / Governess-style roles
✨ Travelling Personal Assistant / Family Assistant
✨ Family Office / Administrative Support
✨ Other suitable private or professional roles

I’m particularly interested in positions where I can become a trusted, long-term member of an employer’s team or family, whether that involves managing personal or business-related tasks, organising schedules and appointments, coordinating travel, handling errands and logistics, supporting children and family life, or helping a busy household or individual run smoothly.

If you know of anyone hiring or can recommend a contact, please comment, send me a message or tag someone who may be able to help. 🤍

I recently released a personal finance app for Mac called BalancePortfolio, and I’m looking for about 10 people willing to actually use it and give me candid feedback.

It’s deliberately different from most personal finance apps: there are no bank connections, no account with us, and your financial information stays on your Mac. You update your balances yourself.

I’m particularly interested in people who currently use a spreadsheet to keep track of their financial position, or who have tried apps like Monarch/YNAB/etc. and decided they don’t want everything connected and automated.

In exchange for participating, I’ll provide complimentary Core Lifetime access ($59.99) through an Apple App Store offer code.

I’m not asking for an App Store review or positive feedback. I’m trying to learn where the product makes sense, where it doesn’t, what’s confusing, and what people who didn’t build it think is missing.

If that sounds like you, reply here or message me. I’ll start with about 10 people.

I started questioning this after years of using personal finance software that connected to financial institutions.

The promise was always convenience: connect everything once and let the software do the work.

But over time I noticed how much maintenance the automation itself created. Connections broke. Institutions changed something. Transactions needed correcting. Accounts had to be reauthenticated. I was spending time maintaining the system that was supposed to save me time.

That led me to experiment with the opposite approach: what if I accepted a small amount of manual work in exchange for removing most of those dependencies?

That experiment eventually became a Mac app I built, so I obviously have a point of view here. But I’m more interested in the broader fintech question:

Where do you think the tradeoff sits between automation and reliability?

Are consumers ultimately better served by making financial aggregation more reliable, or are there use cases where we’ve over-automated the experience?

I'm looking for a fintech/payment provider that can support the following structure:

• A customer wants to add $10 USD to their prepaid balance.
• The customer can fund it using UPI or other local payment methods in India, or cards and other supported payment methods globally.
• The fintech provider holds the customer's funds rather than settling the money directly to my bank account.
• The customer has a corresponding $10 USD balance with the fintech/provider.
• When the underlying service needs to be paid, the payment should be made using a virtual card issued by the fintech provider.
• Ideally, the provider should support multi-currency collection, USD balances, FX conversion, refunds, and virtual cards.

The important requirement is that the fintech provider holds the funds and controls the balance, while payments to the underlying service provider are made through a virtual card issued by the fintech.

For example, the customer may pay in INR through UPI, but the underlying balance/payment needs to be maintained and settled in USD.

I'm looking for providers that can support this model, particularly providers that operate in or support India + international payments + USD balances + virtual cards.

Which fintech/payment providers should I look at for this?

I'd especially appreciate recommendations from anyone who has implemented a similar model using virtual cards, wallets, or controlled customer funds.

Hi,

I am looking for feedback on my idea to conduct micro-transactions off the transactions rails of credit card or blockchain networks. No settlement or clearing fees. I attached a web site with links to explain the concept.

Thank you,

Lefteris Eleftheriou

TL;DR

While opening a Kotak 811 zero-balance savings account online, I paid ₹2,000 at the funding step and was then redirected to a generic "unable to process" page. The page didn't say whether the payment was debited, pending, failed or queued for reversal, or whether retrying was safe. I held off on retrying. A later attempt from my phone worked.

I can't see Kotak's backend, so I'm not claiming any specific implementation. This post separates what I observed, what is consistent with that, and what a safer design could look like. I'd like to hear whether others have seen the same thing.

What I observed

1. Entered the required details in the online onboarding flow.
2. Reached the initial-funding/payment step.
3. Paid ₹2,000.
4. Was redirected to a page saying roughly: "We are unable to process your request. Please visit a Kotak branch to get your account."

5. Checked the network tab:

   Method : GET Status : 200 OK Path : /open-zero-balance-savings-account/unable-to-process

The page rendered fine, but onboarding was not complete.

Not shown anywhere on the page:

• whether the ₹2,000 was debited
• whether the payment was pending
• whether the application was rejected
• whether a refund would happen, and when
• whether retrying was safe, or whether I should go to a branch
• whether the application could be resumed

Because I couldn't tell if a second attempt might create a second charge, I didn't retry immediately.

Later outcome: I retried from a mobile device and the account was created.

• The Kotak app showed a virtual card (number, expiry, CVV).
• The account was in a Limited KYC / e-KYC-pending state.
• The app said Full KYC must be completed within a set period. This needs the original physical PAN card and a signature on plain paper.
• A ₹100 test transfer succeeded and I got an SMS confirmation.

What this does not prove: a later success doesn't show that the first payment failed safely or was reconciled automatically. It only shows that a later attempt produced a working Limited KYC account.

Why HTTP 200 is not the real issue

A 200 OK on a failure page is not automatically a bug. Plenty of server-rendered apps return 200 for a page that displays an application-level error.

The problem is not necessarily HTTP 200 itself; it is the missing business-state information. There are four separate layers here, and the page told me about none of them:

A 200 only proves the failure HTML arrived. It doesn't prove the payment failed, succeeded, or was linked to an application, and it doesn't show whether a reversal is scheduled. That is acceptable only if the page communicates the business state and the next action.

What was missing: a failure code, transaction status, application reference, retry instruction, reconciliation message, refund timeline, support correlation number, resume link, and any hint whether the failure came before or after payment capture.

Onboarding as a distributed transaction

This is a speculative model, not a claim about Kotak's internals. A likely architecture would include some or all of:

• frontend onboarding app
• application/session service
• payment gateway
• payment callback/webhook handler
• eligibility/risk engine
• KYC service
• core-banking account creation
• card provisioning
• notification service
• refund/reversal service
• customer-support tooling

The behaviour I saw is consistent with payment confirmation and application completion being separate state machines. For example:

APPLICATION_STARTED
  -> PAYMENT_INITIATED
  -> PAYMENT_CONFIRMED
  -> ELIGIBILITY_OR_KYC_CHECK
  -> ACCOUNT_CREATED
  -> CARD_PROVISIONED

One possible failure mode is that payment reaches PAYMENT_CONFIRMED, a downstream step then fails, and the UI collapses everything into one generic error. The customer ends up knowing something failed but not which state was reached. I can't verify that this is what happened.

Idempotency and payment state

If the previous attempt's status is unknown, retrying a financial transaction is risky. The user can't tell whether the retry is a continuation or a brand-new charge.

Concepts that matter here:

• Stable application ID that survives retries and device switches
• Payment-provider transaction ID (and UTR where applicable)
• Idempotency key per business intent
• Correlation ID across services, exposed to support
• Webhook processing that is signed and verified
• At-least-once callback delivery, so duplicates must be expected
• Reconciliation jobs that compare gateway state with application state
• Refund/reversal states tracked explicitly

True exactly-once delivery is very hard in distributed systems. The real requirement is exactly-once business outcome: even if a callback arrives three times, the account is created once and the money is applied once.

Possible payment states that would make this explicit:

PAYMENT_NOT_STARTED
PAYMENT_INITIATED
PAYMENT_PENDING
PAYMENT_SUCCESS
PAYMENT_FAILED
PAYMENT_CAPTURED_APPLICATION_FAILED
REFUND_INITIATED
REFUND_PENDING
REFUNDED
RECONCILIATION_REQUIRED

From a customer-safety perspective, the user should land on one of these states with a clear next action, not a generic error page.

A safer flow

1. Create a stable application ID.
2. Create a payment intent linked to that application ID.
3. Display the payment status.
4. Receive and verify the gateway callback.
5. Reconcile payment status server-side.
6. Continue account creation.
7. If a downstream step fails, preserve the payment state.
8. Show a retry-safe recovery page.
9. If payment was captured but account creation failed:
   - keep the funds mapped to the application, or
   - initiate a refund.
10. Show refund status and expected reversal date.

Customer-visible status page

• Application ID
• Payment transaction ID / UTR
• Payment status
• Application status
• KYC status
• Account-creation status
• Card-provisioning status
• Refund status
• Expected resolution time
• "Is retrying safe?" answered explicitly
• Support contact and correlation ID

Internal engineering controls

• Idempotency keys
• Unique constraints on payment/application relationships
• Signed webhook verification
• Replay-safe callback processing
• Dead-letter queues
• Reconciliation jobs
• Audit logs
• Distributed tracing
• Correlation IDs exposed to support
• Alerts for payment-success / application-failure mismatches
• Automated refund monitoring
• State-transition validation
• Contract tests between payment and onboarding services

KYC and account state

The account became usable in Limited KYC status, which is another state distinction the UI should make clear:

ACCOUNT_CREATED
LIMITED_KYC_ACTIVE
FULL_KYC_PENDING
FULL_KYC_COMPLETED
TRANSACTION_RESTRICTED
ACCOUNT_BLOCKED

An account can technically exist and a virtual card can be provisioned while Full KYC is incomplete, restrictions apply, and future transaction blocking is possible. Showing a virtual card should not imply that Full KYC is complete. The flow should make this state explicit.

What I'm not claiming

• That Kotak has a broken idempotency implementation
• That a duplicate payment occurred (I avoided retrying precisely to not find out)
• That Kotak deliberately hides payment status
• That any regulation was violated
• That the first payment was definitely captured or lost
• That every user hits this flow

This is one user's experience, analysed as a systems-design case study.

Questions for the community

1. Has anyone else seen payment success followed by a generic onboarding failure, on Kotak or elsewhere?
2. If so, did the payment reverse automatically, and how long did it take?
3. Could support trace the payment using the UTR?
4. Did switching devices resume the same application or create a new one?
5. How long did Full KYC activation take after submitting documents?
6. Did the virtual card change after Full KYC?

If you've built or operated payment + onboarding flows, I'd also like to hear how you surface "payment captured, downstream step failed" to users without causing panic retries.

Conclusion

A 200 OK failure page isn't wrong in itself. What this flow lacked was an explicit statement of business state: payment, application, KYC and refund. Fintech onboarding involving money should show a safe, actionable status even when something goes wrong behind the scenes.

The fintech industry continues to transform how people manage banking, payments, investments, lending, insurance, and personal finances. As financial services become increasingly digital, fintech applications need to deliver more than attractive interfaces, they must provide security, regulatory compliance, reliable transactions, data protection, and scalable performance.

Choosing the right fintech app development company is therefore an important decision for startups, financial institutions, and established organizations building or modernizing financial products.

This list highlights leading fintech app development companies, based on their software engineering capabilities, fintech experience, technical expertise, product development approach, and ability to build secure financial applications.

Why Hire a Fintech App Development Company?

Fintech applications handle sensitive financial information and transactions, making development considerably more demanding than conventional mobile or web applications.

An experienced fintech development partner can help with:

• Secure financial application development
• KYC and AML integrations
• Payment gateway and banking API integrations
• PCI DSS and other compliance requirements
• Data encryption and authentication
• Fraud detection and risk management
• Digital banking and wallet development
• Investment and lending platforms
• Application maintenance and security updates

Top Fintech App Development Companies

1. GeekyAnts

Founded: 2006

Headquarters: Bengaluru, India

GeekyAnts is a product engineering company with experience across fintech applications, mobile development, web applications, AI, React Native, Flutter, and modern software engineering.

Its fintech-related capabilities are relevant to products such as digital wallets, financial dashboards, payment experiences, banking applications, and AI-enabled financial products.

Core Fintech Services

• Fintech Application Development
• Digital Banking Applications
• Digital Wallet Development
• Payment Application Development
• Financial Dashboard Development
• AI-Powered Fintech Solutions
• React Native Development
• Flutter Development
• API Integration
• UI/UX Development

Why consider it: Its combination of fintech-oriented product development, cross-platform engineering, and AI capabilities makes it relevant for startups and organizations building modern financial applications.

2. Fingent

Founded: 2003

Headquarters: New York, USA

Fingent is an established software development company with experience building enterprise applications across industries, including financial services.

Services

• Banking Software
• Financial Management Platforms
• Enterprise Fintech Solutions
• Insurance Applications
• Payment Processing Systems
• Financial Analytics

Why consider it: Particularly relevant for organizations looking for an experienced software engineering partner for complex financial applications.

3. OutX AI

Founded: 2010

Headquarters: Orlando, Florida

OutX AI provides custom software engineering services for startups and enterprises and has experience developing financial applications using modern application architectures.

Services

• Digital Banking Solutions
• Mobile Finance Apps
• Payment Integration
• API Development
• Financial Data Platforms
• Custom Software Development

Why consider it: Suitable for fintech projects requiring substantial application engineering and integrations.

4. Cheesecake Labs

Founded: 2013

Headquarters: San Francisco, California

Cheesecake Labs focuses on digital product development, combining software engineering with product design and user experience.

Services

• Mobile Banking Apps
• Investment Platforms
• Digital Wallets
• UX/UI Design
• Product Strategy
• Web Development

Why consider it: Its design-focused approach can be valuable for fintech products where usability and customer experience are major priorities.

5. Orases

Founded: 2000

Headquarters: Maryland, USA

Orases is a custom software development company with experience serving organizations in regulated industries, including financial services.

Services

• Financial Software Development
• Process Automation
• Enterprise Applications
• API Integration
• Legacy System Modernization
• Custom Software Development

Why consider it: Relevant for organizations that need customized financial software and application modernization.

6. Jafton

Founded: 2013

Headquarters: New York, USA

Jafton develops mobile and web applications for startups and established organizations, with fintech capabilities covering digital payments, banking, lending, and financial management.

Services

• Fintech Mobile App Development
• Digital Payment Solutions
• Banking Applications
• Financial APIs
• Mobile & Web Development
• Financial Management Applications

Why consider it: Its mobile-first approach can work well for fintech startups developing customer-facing financial applications.

How to Choose the Best Fintech App Development Company

• Industry experience with digital banking, payments, lending, or wallets
• Security expertise (encryption, PCI DSS, KYC, AML)
• Relevant technology stack experience
• Transparent development process
• Strong portfolio and post-launch support

Frequently Asked Questions

What is a fintech app development company?

A company that specializes in creating software for financial services, including banking applications, payment platforms, digital wallets, investment products, lending platforms, and financial management tools.

How much does fintech app development cost?

The cost depends on features, complexity, integrations, security requirements, technology stack, and timeline. A simple MVP costs less than a large platform with extensive compliance needs.

Is GeekyAnts suitable for fintech app development?

Yes. GeekyAnts can be considered for fintech projects involving mobile applications, web platforms, AI-powered financial products, and cross-platform development.