I will create or fix a nodejs or nestjs rest API

O
oscser
O
oscser
Oscar S
create or fix a nodejs or nestjs rest API
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create or fix a nodejs or nestjs rest API

About this gig

Need a REST API built or fixed in Node.js or NestJS? I create and correct backends with clear structure, validation, and production-minded practices.


Backend developer with experience building Node.js and NestJS services for SaaS products including monorepo work, BFF patterns, and measurable performance improvements.


What I do:

Create or fix REST APIs with Node.js, NestJS, or Express (TypeScript)

Endpoint design, validation, and error handling

Database work with PostgreSQL, MySQL, MongoDB, or Redis

Bug fixes, refactors, and small API modules


Every order includes:

Clean, maintainable code structure

Source code via Git or ZIP

Revisions as defined in the package


How I work:

Clear scope and price agreed before I start

Package-defined revision rounds

7-day support window after delivery

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Testing procedures

  • Programming language

    • TypeScript

  • Backend framework

    • Express.js
    • NestJS
    • Node.js

Get to know Oscar S

Oscar S

Full Stack Developer

  • FromColombia
  • Member sinceMar 2014
  • Avg. response time1 hour

  • Languages

    English, Spanish
I am a Full Stack Developer with experience in web products and SaaS platforms, ranging from development and integration to scalability and performance. I have led architecture initiatives, coordinated teams, and collaborated on automation, CI/CD, and the adoption of AI applied to development.

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