Open to opportunities

Mykhailo Andreitsiv

@mykhailoandreitsiv

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Senior frontend developer building fast React/Next.js products with end-to-end ownership and performance focus.

Ukraine

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What I'm looking for

I’m looking for a remote/hybrid team where I can own features end-to-end, optimize UI performance, and build reliable, scalable React/Next.js experiences—while using AI-assisted workflows (Claude Code/Copilot) to deliver quality faster.

I’m a Senior Frontend Developer with 5+ years of commercial experience delivering production-ready React and Next.js applications. I focus on predictable state management (Redux Toolkit, Redux-Saga, Zustand), scalable UI architecture, and performance optimization—reducing re-renders and improving Core Web Vitals through fine-grained code splitting and memoization.

In my recent work, I’ve architected complex dashboards with virtualized lists and WebSocket live updates, refactored legacy UI into cross-platform React Native (Expo) with unified UX, and led a codebase-wide style migration to Tailwind CSS. I also build quality into delivery with Jest/Vitest and Playwright, and I actively integrate AI-assisted workflows (Claude Code, Copilot) to accelerate shipping without compromising code standards.

Experience

Work history, roles, and key accomplishments

Senior Frontend Developer

NeoDevelopment

Jan 2022 - Jan 2023 (1 year)

Architected frontend development and delivery for a Foxi B2B SaaS system for clinical/insurance billing with an interactive matrix panel. Designed complex dynamic form data models to reduce billing transaction errors and optimized nested MUI forms using route/component-level code splitting and streamlined Redux updates for smoother performance.