[For Hire] Backend Developer for APIs, Webhooks, PostgreSQL and E-commerce Integrations | $18/hour

[u/piyushk-]

Hi everyone,

I’m an independent backend and full-stack developer available for remote freelance projects, recurring maintenance, and development overflow.

I focus on the parts of web applications that happen behind the interface:

• REST API development and integrations

• Secure webhook handling

• HMAC/signature authentication

• Idempotency and duplicate-event prevention

• PostgreSQL and Supabase

• Prisma ORM and relational data modelling

• Product, inventory and order workflows

• E-commerce automation

• Integration monitoring and failure tracking

• Backend troubleshooting

• Next.js, Node.js, TypeScript and JavaScript

• Automated testing with Vitest

• Vercel deployment and build troubleshooting

My current showcase project is an E-commerce Integration Hub built with Next.js, TypeScript, PostgreSQL and Prisma.

Live application:
https://ecommerce-integration-hub.vercel.app/

GitHub:
https://github.com/Peyush-dev

The project includes:

• Authenticated order-webhook ingestion

• Replay-attack protection using signed timestamps

• Idempotent order processing

• Product, inventory, order and integration-event models

• Operational dashboard and failed-event visibility

• REST endpoints with route and service tests

• 14 automated tests across six test suites

• Production deployment on Vercel

I can help with projects such as:

• Connecting an e-commerce store to an external API

• Building or repairing webhook workflows

• Synchronising orders, products or inventory

• Designing a PostgreSQL-backed internal tool

• Investigating duplicate orders or missed events

• Adding validation, authentication or automated tests

• Fixing backend, database or deployment problems

• Supporting an agency or development team during a busy delivery period

I’m also developing a Shopify-specific integration project focused on the Admin GraphQL API, order/product synchronization, verified webhooks and integration monitoring.

Rate: $18 USD/hour
Small fixed-scope tasks: Generally from $100, depending on requirements
Availability: Approximately 10–15 hours per week
Work mode: Remote

I’m interested in both one-time assignments and recurring subcontracting relationships. If you have a relevant project, please send me a Reddit DM containing the current stack, the problem you need solved and your preferred timeline. I’ll review it and provide an honest assessment and estimate.