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Frontend-focused software developer with full-stack capability, specializing in React.js, React Native, and modern JavaScript/TypeScript frameworks. Experienced in building scalable, responsive, and high-performance web applications and integrating REST and GraphQL APIs. Uses AI-assisted development tools (Claude, Copilot) to accelerate delivery, refactoring, and test generation while maintaining high code quality and strong unit/integration test coverage. Builds reusable UI components, optimizes performance, and works with CI/CD pipelines and AWS for reliable deployments.…Frontend-focused software developer with full-stack capability, specializing in React.js, React Native, and modern JavaScript/TypeScript frameworks. Experienced in building scalable, responsive, and high-performance web applications and integrating REST and GraphQL APIs. Uses AI-assisted development tools (Claude, Copilot) to accelerate delivery, refactoring, and test generation while maintaining high code quality and strong unit/integration test coverage. Builds reusable UI components, optimizes performance, and works with CI/CD pipelines and AWS for reliable deployments.

Grzegorz Brzozowski

Web Developer, Full Stack Developer, Software Engineer, +2

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Frontend-focused software developer with full-stack capability, specializing in React.js, React Native, and modern JavaScript/TypeScript frameworks. Experienced in building scalable, responsive, and high-performance web applications and integrating REST and GraphQL APIs. Uses AI-assisted development tools (Claude, Copilot) to accelerate delivery, refactoring, and test generation while maintaining high code quality and strong unit/integration test coverage. Builds reusable UI components, optimizes performance, and works with CI/CD pipelines and AWS for reliable deployments.…Frontend-focused software developer with full-stack capability, specializing in React.js, React Native, and modern JavaScript/TypeScript frameworks. Experienced in building scalable, responsive, and high-performance web applications and integrating REST and GraphQL APIs. Uses AI-assisted development tools (Claude, Copilot) to accelerate delivery, refactoring, and test generation while maintaining high code quality and strong unit/integration test coverage. Builds reusable UI components, optimizes performance, and works with CI/CD pipelines and AWS for reliable deployments.

Available to hire

Frontend-focused software developer with full-stack capability, specializing in React.js, React Native, and modern JavaScript/TypeScript frameworks. Experienced in building scalable, responsive, and high-performance web applications and integrating REST and GraphQL APIs.

Uses AI-assisted development tools (Claude, Copilot) to accelerate delivery, refactoring, and test generation while maintaining high code quality and strong unit/integration test coverage. Builds reusable UI components, optimizes performance, and works with CI/CD pipelines and AWS for reliable deployments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Polish

Fluent

English

Advanced

Work Experience

Software developer at Evoke

July 1, 2021 - Present

Developed and maintained responsive and interactive web applications using React.js and TypeScript. Reduced bundle size by 30%+ through code splitting, memoization, and build configuration to improve load times. Designed and built reusable React components for modularity and maintainability. Collaborated with UI/UX designers to translate wireframes into high-quality user interfaces. Wrote unit/integration tests with Jest to ensure application reliability (80%+ coverage). Developed and deployed applications using CI/CD pipelines and AWS. Integrated RESTful APIs and GraphQL to fetch and display dynamic content, and adopted AI-assisted tooling to speed up feature development and refactoring while maintaining quality standards.

Founder / Developer at Clashdle (personal project)

September 1, 2019 - June 1, 2022

Daily guessing game built with React and NestJS. Grew and maintained a live product to 70k monthly active users (800k+ unique players in 2025). Implemented global state management using Context API and optimized performance with lazy loading, memoization, and image optimization. Added server-side anti-cheat hashing with client verification to prevent answer extraction. Built smooth animations and transitions using modern CSS. Monetized via Venatus programmatic ads with GA4 analytics and GDPR-compliant consent handling.