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Dmytro Poberezhnyi

@dmytropoberezhnyi

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I build scalable React applications, design systems, and accessible user experiences.

Poland

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What I'm looking for

I'm looking to build scalable, accessible frontend products, shape technical direction, and help teams deliver faster through design systems, reliable testing, performance optimisation, and AI-assisted workflows.

I've built React and TypeScript products for ReallyGreatReading and Medstar Hospital, spanning interactive education and regulated healthcare. At Software Development Hub, I designed frontend architecture for a learning platform serving thousands of students and educators.

I created a reusable design system and component library adopted across four company projects, reducing UI development time by about 40%. I also implemented Jest and Vitest testing practices reaching 90%+ coverage, improved initial load time by about 35%, and ensured WCAG 2.1 compliance across key components.

I lead frontend technical decisions, mentor junior developers through reviews and pair programming, and use AI-assisted workflows to deliver faster without compromising quality.

Experience

Work history, roles, and key accomplishments

Senior Frontend Developer

Software Development Hub

Jan 2022 - Jul 2026 (4 years 6 months)

Designed and implemented frontend architecture for an interactive educational platform, built a custom design system and component library, and achieved 90%+ test coverage. Led technical direction, mentored junior developers, and integrated Sentry for error tracking.