Open to opportunities

Ярослав Кицун

@0004853

Message

I build production full-stack and backend applications with TypeScript, NestJS, React, PostgreSQL, and Telegram APIs.

Belarus

Message

What I'm looking for

I'm looking to take ownership of backend development, work across the stack, and solve complex engineering problems while delivering production features with a collaborative product team.

At My-mapa.by, I build NestJS and TypeScript backend services, REST APIs, authentication systems, and geospatial features with PostgreSQL/PostGIS. I also led a MongoDB-to-PostgreSQL migration with zero data loss and support frontend delivery with React, Next.js, and TanStack Query.

I've also developed a Backend-for-Frontend microservice at DEWIAR AI, integrating 1C and Telegram APIs. My commercial Telegram Mini App work includes secure Telegram and email account linking, 2FA, Redis token rotation, Telegram Stars and Crypto Bot payments, automated notifications, and admin dashboards.

Experience

Work history, roles, and key accomplishments

Current

Fullstack Developer

Current

My-mapa.by

May 2026 - Present (3 months)

Developed backend services and REST APIs with NestJS and TypeScript, including authentication and business logic for production features. Architected a MongoDB to PostgreSQL migration and implemented security measures with Redis-backed rate limiting.