Senior Full-Stack Engineer · Tech Lead · 0→1→Scale Product Platforms

I build, modernize, and scale high-load product platforms — from 0→1 to production scale.

I’m Oleh Sypiahin — a Senior Full-Stack Engineer and Tech Lead with 9+ years of experience across startup product development, high-load telecom systems, frontend architecture, Kotlin backend services, and event-driven microservices. My strongest value is the full product arc: building from scratch, launching to production, scaling under real usage, and turning production lessons into reusable engineering standards.