I will develop rest apis and third party integrations in node js or net core

D
darshan072
D
darshan072
Darshan Patel
develop rest apis and third party integrations in node js or net core
Full Screen
develop rest apis and third party integrations in node js or net core

About this gig

I connect the systems that don't talk to each other, and I build APIs other developers actually enjoy using.


WHAT I DO

- REST APIs in Node.js, Express or .NET Core / C#

- Third-party integrations: Stripe, HubSpot, Salesforce, Shopify, QuickBooks, Twilio, Google APIs

- Webhook handling with retries and idempotency

- Database design and migrations: PostgreSQL, MySQL, MongoDB, MSSQL

- Authentication: JWT, OAuth2, SSO, role-based access

- Legacy system integration and data migration


WHY ME

I'm a Microsoft Certified: Azure Developer Associate with 7 years across both the Node and .NET ecosystems. That matters when you're wiring a modern frontend into an older enterprise backend - which is most integration work, and where most freelancers stall.


WHAT YOU GET

Working endpoints, a Postman collection, API documentation, error handling that doesn't fail silently, and source code you own.


HOW IT WORKS

1. Send me the systems you need connected and any docs you have

2. I confirm feasibility and quote a fixed price

3. I build, test against the live API and hand over

4. Free bug fixes for 14 days


Message me the two systems and what should flow between them.


  • Expertise

    • Algorithms & Data structures
    • Performance
    • Security
    • Operating systems
    • Source control

  • Programming language

    • TypeScript

  • Frontend framework

    • Angular
    • Next.js
    • React.js
    • Tailwind CSS
    • Vue.js

  • Backend framework

    • Express.js
    • FastAPI
    • Next.js
    • Node.js
    • Firebase

Get to know Darshan Patel

Darshan Patel

AI Automation and Full Stack Developer

5.0(92)
  • FromIndia
  • Member sinceMay 2019
  • Avg. response time1 hour
  • Last delivery1 year

  • Languages

    Hindi, Gujarati, English
Hey! I'm Darshan, a CS graduate with 7+ years building software for the web. Most of my work now is AI automation and full-stack product builds: n8n and Make.com workflows, custom AI agents and RAG chatbots, and React / Next.js apps with Node.js or .NET Core behind them. I'm a Microsoft Certified: Azure Developer Associate, and I design in Figma as well as build. I also consult for YC-backed startups and enterprise teams. Three guarantees: clean code, on-time delivery, clear communication. You'll hear back from me within an hour. Outside work: hiking, and FIFA on PlayStation. Let's talk!

My Portfolio

Other Software Development Services I Offer

Related tags