Senior Frontend Developer (React & React Native)

Job description

**This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Frontend Developer (React & React Native) based in Turkey.** This role is an opportunity for an experienced frontend engineer to build and evolve modern web and mobile experiences using React and React Native. You will contribute to stable, long-term projects with an active pipeline of new front-office features and continuous technical improvements. Your work will span user interface development, code refactoring, performance optimization, testing, and cross-platform mobile development. You will help translate business requirements into robust technical solutions while ensuring applications remain scalable, maintainable, and performant. The position combines hands-on engineering with close collaboration across teams and requires strong ownership in a dynamic environment. You will have the opportunity to improve existing products while introducing new technologies, patterns, and development practices. This is a strong fit for a proactive senior engineer who enjoys solving complex frontend challenges and continuously expanding their technical expertise. ### Accountabilities - Assess business requirements from a technical perspective and determine practical implementation approaches within reasonable timelines. - Develop new user interface components and enhance existing web applications using modern React and TypeScript patterns. - Build and maintain responsive, high-quality websites and front-office features. - Participate in mobile application development using React Native, including cross-platform solutions and reusable software development kits (SDKs). - Refactor and optimize existing code to improve maintainability, scalability, and overall application quality. - Optimize frontend components and applications for strong performance across different browsers and devices. - Identify, troubleshoot, and resolve bugs across existing projects and production environments. - Work with state management solutions such as Redux, MobX, or Zustand to create reliable and maintainable application architectures. - Integrate and work with RESTful and GraphQL APIs as part of frontend and mobile application development. - Implement and maintain automated tests using tools such as Jest and Cypress. - Contribute to frontend build processes, continuous integration and continuous delivery (CI/CD) pipelines, and modern development workflows. - Collaborate proactively with team members and communicate technical considerations, progress, challenges, and solutions clearly. - Continuously improve development processes and contribute ideas that enhance engineering efficiency and product quality. - Adapt to changing priorities, learn new technologies quickly, and contribute effectively in a dynamic environment. ### **Requirements** - 7+ years of professional experience as a Frontend Engineer or JavaScript Developer. - Strong foundation in pure JavaScript and extensive experience building modern frontend applications. - Advanced proficiency with React 18+, including hooks, context, and modern React development patterns. - Expert-level TypeScript experience, including advanced types and strict configuration environments. - Strong knowledge of state management technologies such as Redux, MobX, Zustand, or comparable solutions. - Proven experience building Single-Page Applications (SPAs) and Progressive Web Applications (PWAs). - Strong experience integrating RESTful and GraphQL APIs. - Familiarity with modern frontend build tools such as Webpack, Vite, and Rollup, as well as CI/CD pipelines. - Strong understanding of browser rendering behavior and frontend performance optimization. - Experience with automated testing frameworks such as Jest, Cypress, or equivalent technologies. - 1–2+ years of professional React Native development experience. - Hands-on experience developing React Native Software Development Kits (SDKs) for cross-platform applications. - Upper-Intermediate English proficiency or higher. - Experience with micro frontends, monorepos, or component libraries such as Storybook or Bit is a plus. - Knowledge of design systems and technologies such as Material UI, Tailwind, or similar frameworks is a plus. - Exposure to WebAssembly, WebSockets, or real-time applications is a plus. - Experience integrating third-party tools and libraries is a plus. - Ability to understand business requirements and translate them into clear, practical technical requirements. - Strong adaptability and ability to remain effective when priorities change. - Proactive communication style, strong ownership, and willingness to take initiative. - Fast-learning mindset and enthusiasm for acquiring new technical knowledge. ### **Benefits** - Competitive salary aligned with experience and technical expertise. - Fully remote work, with office access available in locations where company offices are established. - Flexible work schedule focused on performance and outcomes rather than time tracking. - Unlimited paid vacation and sick leave. - Ongoing career development and learning opportunities. - International team environment built around respect, collaboration, and shared goals. - Flat organizational structure with minimal bureaucracy and significant employee autonomy. - Corporate parties and team-building events throughout the year. - Employee referral bonus after a referred employee successfully completes their probation period. - Private medical insurance compensation, with full or partial reimbursement depending on the cost. - Flexible Benefits plan allowing employees to choose eligible activities or expenses for reimbursement, such as gym memberships, language courses, streaming subscriptions, or wellness activities. - Education foundation and biannual learning raffle offering opportunities to learn new subjects beyond your primary role. - Opportunity to contribute ideas, improve processes, and take meaningful ownership of your work.