I will develop backend systems and rest apis with fastapi or nodejs

H
haris7817
H
haris7817
Haris A
develop backend systems and rest apis with fastapi or nodejs
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develop backend systems and rest apis with fastapi or nodejs

About this gig

Need a reliable backend or REST API built, fixed, or improved? I develop clean, scalable backend systems with FastAPI (Python) and Node.js/Express with proper structure, authentication, validation, and documentation.


I build production backends for AI apps, dashboards, and full-stack systems, using PostgreSQL and MongoDB. Whether you need a few endpoints or a complete backend with database integration and third-party services, I deliver code that's clean, secure, and easy to maintain.


What you get:

  • Well-structured REST API endpoints
  • Database integration (PostgreSQL, MongoDB, and more)
  • Authentication and input validation
  • Clear documentation and full source code


Tell me what your backend needs to do and I'll recommend the right setup. Fast responses, ready to start right away.

  • Programming language

    • Python

  • Frontend framework

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

  • Backend framework

    • Django
    • FastAPI
    • Flask
    • Next.js
    • Node.js

  • AI & low/no code builders

    • Lovable

Get to know Haris A

Haris A

AI Backend Engineer

  • FromPakistan
  • Member sinceJun 2026
  • Avg. response time2 hours

  • Languages

    English
I am an AI and Backend Engineer with experience in developing internal web applications, serverless backend logic, and RAG-based assistants. I specialize in building multi-tenant Voice AI CRM platforms and automating HR systems using Python, Node.js, and AWS. My expertise includes integrating LLM-based conversation agents and managing complex data processing pipelines.

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