Open to opportunities

Shimon Oleksandr

@shimonoleksandr

Message

Fullstack engineer building scalable React/Node.js products with performance-first, clean-architecture code.

Ukraine

Message

What I'm looking for

I want to build scalable, high-performance web and real-time features in teams that value clean architecture and transparent communication—owning features end to end while mentoring others and improving code quality.

I develop professional applications with React, React Native and Node.js, focusing on scalable architectures, optimized performance, and predictable code structure for long-term growth.

I place strong emphasis on clean architecture and performance-oriented decisions, and I keep communication transparent to align technical implementation, team collaboration, and business goals.

As a Frontend Engineer, I designed and led the transition to Feature-Sliced Design to enhance maintainability, while building with React, React Native, Expo, and Next.js alongside Storybook, MUI, and ShadCN.

I also take full ownership across implementation and deployment, managing complex REST and real-time features with Node.js (Express/Nest.js), WebSockets and WebRTC—improving stability under high load, boosting team efficiency, and mentoring new developers.

Experience

Work history, roles, and key accomplishments

Frontend Engineer

TenThousand

Jan 2024 - Jan 2026 (2 years)

Built scalable architectures for a feature-sliced React/Node.js codebase and led the transition to Feature-Sliced Design to improve maintainability. Owned feature delivery end-to-end (implementation to deployment), improved API stability and performance under high load, and mentored developers while defining development standards and performing code reviews.