Open to opportunities

Andrii Lavreniuk

@andriilavreniuk

Message

I build high-performance React and Next.js applications with scalable frontend architecture.

Ukraine

Message

What I'm looking for

I'm looking to build high-performance, user-centric web applications with a collaborative team where I can lead frontend architecture, deliver scalable features, and bring efficient, carefully reviewed AI-assisted development practices.

I've built React and Next.js applications since 2019, most recently owning end-to-end feature delivery at Adaptiq for a high-traffic advertising web application. I engineered a type-safe event-tracking system with shared Protobuf schemas and a frontend facade that streams events to multiple analytics providers.

Across Develux, NordFX, and Career Karma, I've developed applications from scratch, improved performance, implemented reusable UI systems, optimized data caching with TanStack Query, and strengthened quality through testing and code reviews. I also lead frontend architecture, mentor teammates, collaborate on API design, and use AI tools thoughtfully with human review, refinement, and testing for production-quality code.

Experience

Work history, roles, and key accomplishments

Senior Frontend Engineer (React / Next.js)

Adaptiq

Feb 2025 - Jun 2026 (1 year 4 months)

Owned end-to-end feature delivery for a high-traffic web application, reducing development bottlenecks and improving deployment speed. Facilitated communication across diverse teams and engineered a type-safe event tracking system using a shared Protobuf schema.