Part-time contract engineering

Senior full-stack & AI engineering for startups,without the hiring cycle

I'm Param Raj, a full-stack engineer with 4.5+ years of experience in React/Next.js, Node.js/NestJS and AI integrations. I work part-time on contract (about 15–20 hours a week), overlapping with US mornings.

Param Raj

What I can help with

AI features & integrations

AI chat, RAG search, agents and workflow automation added to the product you already have.

Extra engineering while you hire

I take part of your backlog part-time while you search for a full-time engineer.

Fixes & rebuilds

Slow, broken or outdated React and Node apps and dashboards: I find what's wrong and fix it, or rebuild the parts that need it.

SaaS MVPs

A working v1 of your product in 4–8 weeks, in your repo.

Selected work

MoneyRoots course catalogue

MoneyRoots: e-learning platform

Paid video courses streamed from Amazon S3, Razorpay checkout with server-side payment verification, OTP sign-up, JWT auth with a mutex-guarded token refresh, device-limited logins (FingerprintJS) and a referral program with an affiliate dashboard.

Next.js 15React 19TypeScriptRedux Toolkit / RTK Query

AI workplace platform (confidential)

Multi-tenant AI workplace platform

Integrates GitHub, Gmail, Outlook, Teams and HubSpot. I built the action engine that lets the AI take real actions through OAuth-scoped APIs, with human-approval steps, async Celery task queues, idempotency and audit logging.

Action engine

  1. 1The AI proposes an action
  2. 2Human approval for actions that need it
  3. 3Runs as an idempotent async Celery task
  4. 4Calls the provider's API with OAuth-scoped access
GitHubGmailOutlookTeamsHubSpot
Actions are recorded in an audit log.
Dholera lead-generation site

Dholera lead-generation site

A landing page for a real-estate campaign, with an enquiry form and a WhatsApp call-to-action, built in its own Next.js route group and layout.

Case study

How I work

  • Overlap with US mornings

    About 9:30 AM–1:30 PM ET (7:00–11:00 PM IST) on weekdays.

  • Async by default

    Written updates, a short demo of working software every week, and a shared board.

  • You own the code from day one

    The code goes into your repo from the first commit.

  • Three ways to work together

    A part-time monthly contract, a fixed-scope MVP, or a fixed-price fix.

Pricing depends on scope. I'll give you a clear quote after a 15-min call.

Stack

  • TypeScript
  • React
  • Next.js
  • Node.js
  • NestJS
  • Express
  • Python
  • Celery
  • PostgreSQL
  • Redis
  • Redux Toolkit
  • Tailwind
  • AWS (S3)
  • OpenAI / Anthropic APIs
  • Razorpay/Stripe-style payments

Book a 15-min call

Tell me what you're building and where you need help. I'll reply by email to set up a call.