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I will be your backend developer for nodejs python rest api postgres firebase supabase
Hevin G
Top Rated
People keep coming back! hevingolakiy632 has an exceptional number of repeat buyers.
About this gig
Hi, I'm Hevin. I build production backend systems and REST APIs that don't fall over when real traffic hits them.
Most cheap APIs work in dev and die in prod. Mine come with auth, validation, error handling, logging, tests, and OpenAPI docs from day one. Built so any developer on your team can pick it up six months later and ship the next feature without rewrites.
What you get:
Clean REST API in Node.js (Express, Nest, Fastify) or Python (FastAPI, Django)
TypeScript strict mode, MVC architecture, separation of concerns
Postgres or Mongo, proper schema, migrations, indexes, relations
Auth + RBAC, JWT, OAuth, sign in with Google/Apple, session management
Input validation, error handling, structured logging, rate limiting
OpenAPI / Swagger documentation, ready for any frontend or mobile client
Docker, CI/CD pipeline, deploy to AWS, GCP, Railway, Fly, or Vercel
Integrations: Stripe, Firebase, Supabase, OpenAI, third-party APIs
Full source code, your repo, your servers, your IP
I'm a Top Rated Seller on Fiverr. Message me with your API requirements and I'll review the architecture for free before you order.
Get to know Hevin G
Hevin G
Mobile and full stack developer who builds apps that actually work
Top Rated
- FromIndia
- Member sinceApr 2019
- Avg. response time1 hour
- Last deliveryabout 6 hours
Languages
English, Hindi, Portuguese, Spanish
I build mobile and web apps, and honestly most things that run on a computer. My core strength is mobile (native Android and iOS, plus Flutter and React Native), backed by full stack web and backend work, so I can take a product from a rough idea to a shipped, working app.
What clients keep coming back for isn't just the code, it's that I treat their product like my own. No quick patches, no half finished work. I find the real problem, build it right, and make sure it holds up in the real world. Got an idea, even a rough one? I'll help you build it.
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FAQ
Which stack do you recommend for my project?
Node.js + TypeScript + Postgres for most SaaS. Python + FastAPI for ML/data heavy. Tell me what your app does and I'll recommend the right stack based on actual constraints not hype.
Do I get the full source code and own the IP?
Yes, 100 percent. Full repo, schema, env config, deploy scripts, documentation. Pushed to your GitHub or zipped, whichever you prefer. No lock in, no licensing weirdness.
Can you deploy the API too or just code?
Both. Standard and Premium include deploy to AWS, GCP, Railway, Fly, or Vercel. Docker + CI/CD pipeline included. You get a working production URL, not just a git repo.
Does the API include authentication and user management?
Yes. Standard and Premium include full JWT auth, password reset, email verification, role-based access (RBAC). Social logins (Google, Apple, GitHub) and OAuth flows on request.
Can you connect to my existing database or build a new one?
Both. I can connect to your existing Postgres, MySQL, Mongo, or Firebase. If you don't have one, I'll design the schema, set up migrations and seed data, and host it for you.
What about ongoing maintenance after delivery?
30 days free support included on Premium (bug fixes, deploy issues, minor tweaks). After that, I'm available hourly or on retainer. Most clients return for new endpoints or scaling work.
