Senior Frontend Developer (React + React Native)
Summary
Build and maintain e-commerce and fintech UIs using React and React Native, collaborating with designers and backend teams to deliver scalable, high-performance applications.
Our client is a modern, international technology company specializing in creating innovative solutions for the e-commerce and fintech industry, which values creativity, commitment, and teamwork.
Senior Frontend Developer (React + React Native)
location: Warszawa
Tasks
- Designing and implementing advanced user interfaces using React and React Native,
- Creating and maintaining reusable components and frontend libraries,
- Close collaboration with backend teams, UX/UI designers, and product owners to deliver high-quality solutions,
- Optimizing applications for performance and scalability,
- Conducting code reviews and mentoring junior team members,
- Participating in planning system architecture and technology selection.
Job Requirements
- Minimum 5 years of experience in creating web applications using React,
- Minimum 3 years of experience in creating mobile applications using React Native,
- Excellent knowledge of JavaScript (ES6+), HTML5, and CSS3,
- Experience with Redux or other state management tools,
- Familiarity with CI/CD tools and experience working with version control systems (Git),
- Ability to write unit and integration tests (Jest, Enzyme, Testing Library),
- Experience with integrating RESTful APIs and GraphQL,
- Knowledge of best practices related to frontend application security,
- Ability to work in agile methodologies (Agile, Scrum),
- Very good communication and interpersonal skills,
- Fluent in English (minimum B2 level).
Good To Have
- Experience with TypeScript,
- Knowledge of other frontend frameworks and libraries (Vue.js, Angular),
- Experience in conducting technical training and workshops,
- Familiarity with tools for analyzing and monitoring application performance (e.g. Lighthouse, Sentry).
We Can Offer You
- Attractive salary and bonus system,
- Possibility of remote work and flexible working hours,
- Private medical care and life insurance,
- Access to the latest technologies and tools,
- Budget for training, conferences, and professional development,
- Friendly and supportive work atmosphere in an international environment,
- Modern offices in convenient locations.