I will be your developer to integrate apis, payment gateways, build saas product

R
rohitkumar8181
R
rohitkumar8181
Rohit Sankhyan
5.0
5.0
be your developer to integrate apis, payment gateways, build saas product
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be your developer to integrate apis, payment gateways, build saas product

About this gig

Need a secure, scalable, and production-ready backend for your web, mobile, SaaS, or AI application?

I will build a high-performance Node.js / NestJS backend with clean architecture, secure APIs, database integration, and reliable deployment.

With 5+ years of professional development experience, I build production-ready backend systems for SaaS, AI, fintech, Web3, and modern web applications.

What I can build:

Node.js, NestJS & Express REST APIs

GraphQL & Apollo APIs

JWT, OAuth & Role-Based Access Control

PostgreSQL, MongoDB, MySQL & Supabase

Third-party APIs, webhooks & payment integrations

OpenAI, Claude & Gemini integrations

Real-time APIs & WebSockets

API validation, security & error handling

Database design & performance optimization

Docker & cloud deployment

Perfect for:

SaaS AI Apps AI Agents MVPs Fintech Web3 Web & Mobile Apps

Whether you need a new backend, API integration, existing backend fixes, or performance optimization, I'll build it with maintainability, security, and scalability in mind.

Send me your requirements before ordering. I'll review your project and recommend the right backend approach.

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Testing procedures

  • Programming language

    • TypeScript

  • Frontend framework

    • Ember.js
    • Next.js
    • React.js
    • Preact
    • Vue.js

  • Backend framework

    • Express.js
    • FastAPI
    • Fastify
    • NestJS
    • Node.js

Get to know Rohit Sankhyan

Rohit Sankhyan

AI assistant and Saas Product Developer

5.0(1)
  • FromIndia
  • Member sinceDec 2025
  • Avg. response time22 hours
  • Last delivery2 months

  • Languages

    Hindi, English
Hi, I’m Rohit, a full-stack AI developer skilled in building scalable SaaS platforms, AI-powered apps, and automation systems. I specialize in cutting-edge AI technologies like GPT, LangChain, Streamlit, Chainlit, Vector DBs, Nextjs, React, Python, JavaScript and API to build powerful, AI-driven solutions. ⚡️ Client satisfaction is my top priority—I work meticulously to ensure that every project not only meets but exceeds expectations. 🤝 Let’s collaborate! Share your project requirements, and together we’ll create something remarkable that adds real value to your business or personal life.

My Portfolio

Reviews

1 reviews for this Gig
5.0

(1)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • H
    image-docs

    hillstomountain

    IN

    India

    5

    My experience of working with Rohit was impressive and he worked upon a sophisticated AI agent for my SPA which is extraordinarily capable of fulfilling the user queries in seconds using a fully functional LangGraph workflow in combination with advanced AI technologies such as Gemini, OpenAI, and Grok....

    $50

    Price

    2 days

    Duration

    Helpful?
    Yes
    No
Reviews

1 reviews for this Gig
5.0

(1)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • H
    image-docs

    hillstomountain

    IN

    India

    5

    My experience of working with Rohit was impressive and he worked upon a sophisticated AI agent for my SPA which is extraordinarily capable of fulfilling the user queries in seconds using a fully functional LangGraph workflow in combination with advanced AI technologies such as Gemini, OpenAI, and Grok....

    $50

    Price

    2 days

    Duration

    Helpful?
    Yes
    No

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