I will develop node js backend apis with postgresql

S
sagar_vasu
S
sagar_vasu
Vasu Sagar
develop node js backend apis with postgresql
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develop node js backend apis with postgresql
Full Screen
Full Screen
develop node js backend apis with postgresqldevelop node js backend apis with postgresqldevelop node js backend apis with postgresql

About this gig

Need a secure backend API your frontend or mobile app can actually rely on?


I build Node.js and Express backends with PostgreSQL, authentication, API documentation, integrations, and production-ready project structure.


I can develop:

  1. REST APIs and CRUD endpoints
  2. PostgreSQL database schemas
  3. JWT/OAuth authentication
  4. User roles and permissions
  5. Payment, email and third-party API integrations
  6. File/storage integration
  7. Validation and error handling
  8. Existing backend fixes or extensions
  9. Deployment and environment setup


This gig is focused on backend development. If you also need the frontend, see my full-stack SaaS gig.


You receive working endpoints, source code, and documentation your frontend team can integrate without guessing.


Please message me before ordering with your feature list, data model, required integrations, existing code, and deployment target.

  • Expertise

    • Algorithms & Data structures
    • Performance
    • Security
    • Databases
    • Testing procedures

  • Programming language

    • JavaScript

  • Frontend framework

    • Bootstrap
    • Next.js
    • React.js
    • Svelte
    • Tailwind CSS

  • Backend framework

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

Get to know Vasu Sagar

Vasu Sagar

Full Stack SaaS, React Native, AI Developer

5.0(92)
  • FromPakistan
  • Member sinceFeb 2019
  • Avg. response time1 hour
  • Last delivery2 years

  • Languages

    Sindhi, English, Urdu
Full-stack developer specializing in SaaS, web apps, React Native mobile apps, scalable Node.js backends, and production AI integrations. I work with React, Next.js, TypeScript, PostgreSQL, MongoDB, Firebase, OpenAI, Claude, and Gemini. From idea or Figma to frontend, backend, APIs, databases, AI features, testing, and deployment, I can build your product end to end. With 90+ Fiverr reviews and a 5.0 rating, I deliver clean, maintainable code, clear communication, and realistic timelines. Send me your requirements, idea, or existing code to get started.

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