Open to opportunities

Yauheni Musevich

@yauhenimusevich

Message

Full-stack developer with 8+ years building end-to-end web systems, payment integrations, and scalable APIs.

Poland

Message

What I'm looking for

I’m looking for a full-stack role where I own end-to-end system design—frontend + backend—build reliable integrations, and ship with strong CI/CD and Docker. I thrive in teams that value code quality and AI-augmented development.

I’m a full-stack developer with 8+ years of commercial experience, focused on designing systems from scratch and turning requirements into maintainable, production-ready products. My core stack spans React/Next.js with TypeScript on the frontend, and NestJS/Node.js with Laravel/PHP on the backend, with Dockerized deployments and CI/CD baked in from day one.

I’ve led delivery in small teams and owned architecture decisions across multiple projects—most notably building a payment gateway from scratch with NestJS + TypeScript, including Docker deployment and CI/CD. I also develop real-time features like WebSocket-driven trading interfaces and multi-role chat, plus admin dashboards using Next.js and strong API design.

On the backend, I’ve independently designed SaaS platforms using Laravel 10+ and PHP 8.x, including payment microservices and media generation workflows (FFmpeg), along with secure auth (JWT) and CMS capabilities. I’m comfortable across the full lifecycle—system design, integrations (OAuth/JWT/RBAC, payment providers), performance/SEO, testing, and code review—and I’ve been using Anthropic Claude Code for AI-augmented development since 2024.

Experience

Work history, roles, and key accomplishments

Current

Freelance Full-Stack Dev

Current

Self-Employed

Jun 2022 - Present (4 years)

Designed and built a payment gateway from scratch using NestJS/TypeScript, including Docker deployments and GitHub Actions CI/CD, and integrated a third-party payment provider via REST. Led a 2-developer team and delivered real-time trading interfaces, multi-role chat, and admin dashboards using Next.js.

NestJS TypeScript Docker PostgreSQL Payment Integration WebSockets Next.js Directus REST APIs

Backend Architect

Senvisen

Jan 2022 - Jul 2025 (3 years 6 months)

Advanced a B2B audio streaming platform by developing a custom HowlerJS player supporting online/offline playback and implementing scheduled ad/notification systems. Delivered PDF receipt and license generation and maintained/evolved a long-running legacy project.

Offline Online Playback Scheduling REST APIs

Backend Developer

Deploi AB

Jan 2025 - Jun 2025 (5 months)

Contributed to architectural decisions for non-Web3 backend services using NestJS/TypeScript. Developed core REST API modules and set up CI/CD pipelines and deployment processes.

NestJS TypeScript REST APIs CI CD System Design Git Code Review Docker Linux Unix

Backend Architect

Senvisen

Jun 2017 - Dec 2020 (3 years 6 months)

Independently designed backend architecture for an Audio Generation SaaS platform using Laravel 10+ and PHP 8.x. Built a payment microservice and a video slideshow generation service using FFmpeg, plus JWT authentication and CMS features.

PHP 8+FFMPEG Microservices JWT CMS Development REST APIs SQL Payment Integration