Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi there! I’m Justyna Kwaśniak, a front-end developer with hands-on experience in building responsive web and mobile interfaces using React, TypeScript, and React Native. I enjoy turning ideas into clean, user-centered applications and I combine a background in Journalism with modern development skills to craft accessible, engaging digital products. I’m driven by teamwork, problem-solving, and continuous learning. I love collaborating on open-source projects and contributing to products that people actually enjoy using, while continuously refining my craft and growing with the team.…Hi there! I’m Justyna Kwaśniak, a front-end developer with hands-on experience in building responsive web and mobile interfaces using React, TypeScript, and React Native. I enjoy turning ideas into clean, user-centered applications and I combine a background in Journalism with modern development skills to craft accessible, engaging digital products. I’m driven by teamwork, problem-solving, and continuous learning. I love collaborating on open-source projects and contributing to products that people actually enjoy using, while continuously refining my craft and growing with the team.

Justyna Kwaśniak





Hi there! I’m Justyna Kwaśniak, a front-end developer with hands-on experience in building responsive web and mobile interfaces using React, TypeScript, and React Native. I enjoy turning ideas into clean, user-centered applications and I combine a background in Journalism with modern development skills to craft accessible, engaging digital products. I’m driven by teamwork, problem-solving, and continuous learning. I love collaborating on open-source projects and contributing to products that people actually enjoy using, while continuously refining my craft and growing with the team.…Hi there! I’m Justyna Kwaśniak, a front-end developer with hands-on experience in building responsive web and mobile interfaces using React, TypeScript, and React Native. I enjoy turning ideas into clean, user-centered applications and I combine a background in Journalism with modern development skills to craft accessible, engaging digital products. I’m driven by teamwork, problem-solving, and continuous learning. I love collaborating on open-source projects and contributing to products that people actually enjoy using, while continuously refining my craft and growing with the team.

Available to hire

Hi there! I’m Justyna Kwaśniak, a front-end developer with hands-on experience in building responsive web and mobile interfaces using React, TypeScript, and React Native. I enjoy turning ideas into clean, user-centered applications and I combine a background in Journalism with modern development skills to craft accessible, engaging digital products.

I’m driven by teamwork, problem-solving, and continuous learning. I love collaborating on open-source projects and contributing to products that people actually enjoy using, while continuously refining my craft and growing with the team.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Polish

Fluent

English

Advanced

Work Experience

Open-Source Contributor - Front-End at Open-Source Projects

November 1, 2025 - Present

Working on real-world React/TypeScript codebases: refactoring components, improving UI consistency, fixing bugs, and submitting PRs. Gained experience with Git workflow, reviews, and collaboration in distributed teams.

Open-Source Contributor - Front-End at Self-Employed / Open-Source Community

November 1, 2025 - Present

Refactoring components, improving UI consistency, fixing bugs, and submitting pull requests across real-world React/TypeScript codebases. Gained experience with Git workflows, code reviews, and collaboration in distributed teams.

Front-End Development Intern at Finer Credit

July 1, 2025 - August 1, 2025

Contributed to frontend development tasks, built UI components, implemented features using React and TypeScript, and collaborated with the team to ensure UI consistency and usability.

Intern Front-End Developer at Finer Credit

May 1, 2025 - May 1, 2025

Contributed to front-end development using React Native; implemented UI features following guidelines; improved usability and layout; engaged in API integration and deployment workflows.

Internship Student at Sysmo.pl

May 1, 2025 - May 1, 2025

Contributed to mobile application development by completing project-based tasks. Built a demo mobile app using React Native following UI/UX guidelines and component-based architecture; improved mobile app demo, updated from client brief and improved usability and layout consistency.

Junior Front-End Developer at jkwasniak.pl

August 1, 2024 - Present

E-commerce store development: dynamic product filtering, cart system, React Context state management, and API-based product data. Implemented responsive design and smooth navigation.

Senior Patient Coordinator at Voxel, Kraków

January 1, 2020 - Present

Coordinated patient communications, teamwork and problem-solving under pressure. Trained new staff and improved workflows.

Senior Patient Coordinator at Voxel

January 1, 2020 - Present

Teamwork and problem-solving under pressure; training new staff and improving workflows in a high-demand environment.