Oleksandr S.
Senior React & Next.js Developer | TypeScript, Node.js
I build and improve production web applications with React, Next.js, TypeScript, and Node.js. With 10+ years of software development experience and 100+ completed projects, I help teams ship maintainable features, solve performance issues, and build reliable frontend architecture. Relevant results: - Reduced a Next.js application's load time by 45% - Built a custom WordPress plugin supporting 10K+ daily users - Developed a React dashboard used by 5+ enterprise clients What I can help with: - React and Next.js application development - TypeScript, state management, and API integration - Frontend architecture, performance optimization, and responsive UI - Debugging, refactoring, and maintaining existing applications - Automated testing and production-quality code I also have extensive WordPress experience, including custom themes, plugins, and PHP enhancements. I take ownership of the work beyond implementation, with a focus on maintainability, clear communication, and solutions that fit the existing codebase. If you have an existing application to improve or a new feature to build, let's discuss the technical requirements.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $371
Billed in all: $325,807$326k
$185 in the last 6 months
Across 111 contracts
Earnings, last 30 days
Skill rankings: Top 16% in Redux Thunk
Ranked by MRR among everyone on Upwork with the skill.
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