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Vitalii Rainchuk
Mid-level Frontend Developer specializing in React and TypeScript performance
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Frontend engineer (Zippia) who leads complex, form-heavy React + TypeScript workflows end-to-end, setting architecture conventions and improving performance at scale. Demonstrated strong production ownership by fixing a PDF migration issue and coordinating a recovery that regenerated PDFs for ~1700 impacted users while working closely with PM, design, QA, and a small founding team.
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Key Strengths
- End-to-end ownership of high-traffic, form-heavy frontend flows
- Establishes scalable frontend architecture conventions (component boundaries, state ownership, view/data separation)
- Strong TypeScript-driven contract enforcement between components and APIs
- Performance tuning to reduce re-renders and prevent state desync in complex workflows
- Improves maintainability by reducing duplication and extracting reusable primitives
- Bundle size reduction via code splitting and refactoring heavy components
- Cross-functional feature development process from idea/prototype through production (PM, design, QA, founder)
- Production incident recovery: diagnosed empty PDF generation issue, shipped fix, and regenerated PDFs for ~1700 impacted users
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