April 8, 2026

Frontend Developer (React)

Senior • Remote

Warsaw, Poland

Growth through diversity, equity, and inclusion. As an ethical business, we do what is right — including ensuring equal opportunities and fostering a safe, respectful workplace for each of us. We believe diversity fuels both personal and business growth. We're committed to building an inclusive community where all our people thrive regardless of their backgrounds, identities, or other personal characteristics.

Duties description:

  • Design, build and maintain efficient, reusable and reliable code.

  • Build React/Next.js based applications.

  • Ensure the best possible performance, quality, and responsiveness of applications.

  • Identify bottlenecks and bugs, and devise solutions to mitigate and address these issues.

  • Help maintain code quality.

  • Participate in the agile team scrums and effectively communicate to the team the status, roadblocks, and timelines for the task at hand.

  • Must be able to collaborate with BA, QA, developers and offshore developers to plan, design, develop, test, and maintain mobile web and desktop-based applications requested by the stakeholders.

  • Share knowledge with the team during workshops.

Requirements:

  • 5+ years of professional experience.

  • Strong experience in JavaScript and TypeScript.

  • Thorough understanding of React/Next.js core principles along with React router, hooks, Redux (or the like) workflows, Web performance and security.

  • Developing and maintaining modern distributed micro services.

  • Development in Cloud environments (Google Cloud Platform preferred).

  • Building, testing, and troubleshooting high volume web services using API Protocols and Data Formats (REST & JSON).

  • Solid foundation in data structures, algorithms and its implementation in JS.

  • Expertise with semantic HTML.

  • Proficiency in CSS, including Tailwind, Styled Components, CSS Modules, and SASS.

  • Expertise browser-based debugging tools.

  • Experience with responsive and adaptive design.

  • Experience with Testing (Unit Testing, react-testing-library, E2E).

  • Keen understanding of web application development process and standard methodologies.

  • Excellent communication skills.

  • Great ownership of assigned tasks.

  • Self-driven and proactive approach.

  • English (B2+)

Nice to have:

  • Previous experience in Frontend development with Docker.

  • Experience with Headless CMS (preferably Contentful).

  • Experience with NodeJS.

  • Knowledge of GraphQL.

Missing one or two of these qualifications? We still want to hear from you! If you bring a positive mindset, we'll provide an environment where you feel valued and empowered to learn and grow.

We offer:

  • Stable employment. On the market since 2008, 1500+ talents currently on board in 7 global sites.

  • “Office as an option” model. You can choose to work remotely or in the office.

  • Workation. Enjoy working from inspiring locations in line with our workation policy.

  • Great Place to Work® certified employer.

  • Flexibility regarding working hours and your preferred form of contract.

  • Comprehensive online onboarding program with a “Buddy” from day 1.

  • Cooperation with top-tier engineers and experts.

  • Unlimited access to the Udemy learning platform from day 1.

  • Certificate training programs. Lingarians earn 500+ technology certificates yearly.

  • Upskilling support. Capability development programs, Competency Centers, knowledge sharing sessions, community webinars, 110+ training opportunities yearly.

  • Grow as we grow as a company. 76% of our managers are internal promotions.

  • A diverse, inclusive, and values-driven community.

  • Autonomy to choose the way you work. We trust your ideas.

  • Create our community together. Refer your friends to receive bonuses.

  • Activities to support your well-being and health.

  • Plenty of opportunities to donate to charities and support the environment.

  • Modern office equipment. Purchased for you or available to borrow, depending on your location.

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Remote

Warsaw, Poland

🏢 Summary: Opportunity for an experienced React Native Developer to design and develop complex cross-platform mobile applications from scratch, contribute to technical architecture, and drive development best practices. The role involves building high-performance iOS and Android applications, integrating APIs and native libraries, and collaborating in Agile teams. Flexible remote work and career development opportunities are included. 🗂️ Requirements: 4+ years of IT experience, 2+ years of React Native development experience, Expertise in React Native, Expertise in React, Understanding of front-end and back-end development, Experience with RESTful APIs, Experience with GraphQL, Knowledge of HTML, Knowledge of CSS, Experience with Jest, Understanding of React Native architecture, Experience with Xcode, Experience with Android Studio, Knowledge of Agile methodologies, English proficiency 📃 Skills: React, ReactNative, JavaScript, HTML, CSS, GraphQL, REST, Jest, Xcode, AndroidStudio, Swift, Kotlin, Java, CI/CD, Agile, Scrum, Waterfall 🏢 Description: We are looking for experienced professional who can design and develop complex software systems from scratch, design project-wide technical solutions, as well as establish and control the best development practices. Requirements: +4 years of experience in IT and minimum of 2 years of proven experience as a RN Developer Expertise in React Native, React is essential Comprehensive understanding of both front-end and back-end development processes Strong collaboration skills, enabling effective teamwork and communication within cross-functional teams Ability to adapt quickly to emerging technologies and evolving project requirements In-depth understanding of React Native architecture, component lifecycle, state management, and hooks, familiarity with nativebuild tools (Xcode, Android Studio) and native app design; principles, including offline storage, and performance tuning Experience with RESTful APIs, GraphQL, and third-party integrations Sound knowledge of HTML, CSS, and associated technologies for front-end development Experience in code testing and debugging, leveraging tools such as Jest Firm grasp of software development principles and methodologies, encompassing Agile, Scrum, and Waterfall Outstanding communication skills and adeptness in collaborative teamwork Strong organizational acumen and meticulousness to deliver top-notch work Excellent command of spoken and written English Nice to have: Familiarity with GraphQL and its fusion with frontend applications Experience in creating native modules using Swift/Kotlin/Java Knowledge of CI/CD pipelines Responsibilities: Develop and enhance cross-platform mobile applications using React Native, ensuring high performance and quality on both iOS and Android Collaborate with design and product teams to create seamless, intuitive, and visually appealing user interfaces Optimize applications for maximum performance and scalability Integrate third-party APIs and native libraries as needed Conduct code reviews, write unit tests, and debug applications to ensure code quality and functionality Maintain up-to-date knowledge of React Native advancements and apply best practices in coding, architecture, and development methodologies Provide technical expertise to guide product development and offer solutions for complex issues Participate in Agile ceremonies, including daily stand-ups, sprint planning, and retrospectives We offer: Projects for such clients as PayPal, Wargaming, Xerox, Philips, Adidas and Toyota Competitive compensation that depends on your qualification and skills Career development system with clear skill qualifications Flexible working hours aligned to your schedule Options to work remotely