Senior Frontend Developer (React + React Native)

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.
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Work arrangement
Yes