I will build a full stack web app with node js react and typescript

Y
yqroslavz
Y
yqroslavz
Yaroslav Z

About this gig

Need a full-stack web app or feature built end-to-end - frontend, backend, database, and deployment? That's what I do.

I'm a full-stack engineer with 3 years of production experience on an 8-person product team, plus two open-source full-stack projects shipped end-to-end. I build reliable, maintainable applications from the first API to a deployed product.

WHAT I CAN BUILD:

  • Frontend: React, Next.js, responsive UIs
  • Backend: Node.js, NestJS, Express, REST & GraphQL APIs
  • Databases: PostgreSQL, MongoDB, Redis
  • Auth, integrations, and AI/LLM features
  • CI/CD and deployment (Vercel, Render, Docker)

WHAT YOU GET:

  • Clean, well-structured TypeScript code
  • Tested, production-ready work
  • Source code included
  • Clear communication throughout

HOW I WORK: I use AI tools to move fast, but I'm careful about what ships - especially anything touching security or data integrity. If I can't explain a line, it doesn't go in.

Not sure which package fits your project? Message me with the details and I'll tell you honestly what's realistic before you order.

Let's build something solid.

Get to know Yaroslav Z

Yaroslav Z

FullStack Engineer

  • FromPoland
  • Member sinceJun 2026
  • Avg. response time1 hour
  • Languages

    English, Russian, Ukrainian, Slovak
I'm a Full-Stack Engineer with 3 years of production experience in TypeScript, Node.js/NestJS, and React. I specialise in third-party API and AI/LLM integrations — connecting external services, payment/CRM/ad APIs, and AI providers (OpenAI, Claude, Gemini) into real applications. I spent 3 years building an ad-tech SaaS product with 8+ API integrations, and recently shipped two open-source full-stack AI tools end-to-end. I focus on clean, reliable integration work that holds up in production.

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