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Backend REST API Development with NestJS or Node.js and PostgreSQL

  • From $499
  • 10-day delivery
  • 3 revisions
  • Secure checkout
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I build secure, documented backend APIs for web and mobile apps: clean data model, authentication and permissions, validation, file uploads, real-time features and tests, deployed and ready for your frontend team.

What's included

  • NestJS or Express API in TypeScript
  • PostgreSQL data model with Prisma migrations
  • JWT or session auth, roles and permissions (CASL)
  • Input validation, rate limiting and safe error handling
  • File uploads to S3-compatible storage
  • WebSockets for chat or live updates on request
  • Swagger/OpenAPI docs and automated tests
  • Docker and deploy pipeline

Who this is for

  • Mobile apps that need a backend
  • Frontend teams waiting on an API
  • Replacing Firebase or a no-code backend that has hit its limits

What I need from you

  • Feature list or screens
  • Any existing database or API to connect to

How it works

  1. Message me with what you need. The first consultation is free.
  2. I confirm the scope and a fixed price before any work starts.
  3. I do the work and keep you updated in the chat.
  4. You review it, and I hand over notes, access and anything I changed.

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Questions

Can you work with my existing database?

Yes. I can introspect an existing PostgreSQL or MySQL database with Prisma and build the API on top.

Will my frontend team know how to use it?

They get Swagger docs with every endpoint, example requests and a Postman collection.

What you'll get

  • Production-ready implementation tailored to your goals
  • Clean, maintainable code following modern best practices
  • Deployment to secure infrastructure with monitoring
  • Handover with documentation and full access

Tech stack & tooling

  • Frontend: Next.js, React, TypeScript, Tailwind CSS
  • Backend: Node.js, NestJS, Express, REST APIs
  • Database: PostgreSQL, MongoDB, Prisma
  • Deployment: Docker, AWS, CI/CD

How we'll work together

We start with a short requirements discussion, agree on scope and milestones, then move through implementation, review and handover. You get clear visibility into progress and a stable deployment at the end.

Fixed price

$499

Order now

Process

From idea to production

A transparent, predictable process focused on shipping real value, not surprises.

  1. 1

    Discovery call

    Free consultation

    We talk through your goals, users, timeline and budget, and I flag risks early.

  2. 2

    Scope & quote

    Written proposal

    You get a written scope, milestones and a fixed price. No work starts until you agree.

  3. 3

    Build & iterate

    Regular check-ins

    Small increments with regular check-ins, so you can see progress and steer early.

  4. 4

    Launch & support

    Handover + docs

    Production deployment with monitoring, documentation and optional ongoing support.

FAQ

Questions, answered

Everything you need to know before we start.

Still have a question?

Ask directly, I reply within 24 hours.

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What kind of projects do you take on?

SaaS products, business web apps, dashboards and APIs, plus DevOps and Linux work: deployments, CI/CD, server setup and maintenance. I take on new builds as well as existing codebases.

How much does a project cost?

It depends on scope. Fixed-scope packages with starting prices are listed on the Services page. For custom work I send a fixed quote after a free discovery call, so you know the price before any work starts.

How long does a typical project take?

Small fixes and deployments usually take days; a full web app or MVP takes weeks. Every proposal includes a timeline with milestones, so you know what ships when.

How do payments work?

We agree on scope and price first, and no advance is needed to start the conversation. Fixed-scope services can be paid securely online by card. Larger projects are split into milestones agreed up front.

Can you work on my existing codebase or servers?

Yes. I regularly fix bugs, improve performance, add features and migrate infrastructure on existing projects. We usually start with a short review so the estimate is based on the real code.

Do you work with clients outside Bangladesh?

Yes. I work remotely with clients worldwide, schedule calls around your time zone and reply to messages within 24 hours.

What happens after launch?

You get a handover with documentation and full access to your code, servers and accounts. Ongoing maintenance and support are available if you want someone to keep things running.

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