Senior Software Engineer - Frontend (React)

As a **Senior Software Engineer - Frontend (React)** at CodeNinja, you will be integral to designing and developing cutting-edge frontend solutions. Your work will involve creating responsive and highly interactive web applications that enhance user engagement and performance. You will collaborate closely with designers and backend engineers to ensure seamless integration and optimal functionality. A strong focus on code quality, performance optimization, and user experience is paramount in this role. **Requirements** Must-Haves (Core Requirements)Frontend Development * Extensive experience with **React.js** and **React Native** * Strong proficiency in **JavaScript (ES6+)** and **TypeScript** * In-depth knowledge of **HTML5, CSS3**, and modern frontend development practices * Experience building scalable, maintainable, and reusable UI components Mobile Application Development * Hands-on experience developing and maintaining **cross-platform mobile applications** using React Native * Understanding of mobile application lifecycle, navigation, state management, and deployment processes * Experience integrating native device features, APIs, and third-party libraries Responsive & User-Centric Design * Experience developing responsive, visually appealing, and user-friendly interfaces across web and mobile platforms * Strong understanding of modern CSS frameworks and styling solutions such as **Tailwind CSS, Bootstrap, Styled Components, or NativeWind** State Management * Experience with state management solutions such as **Redux, Redux Toolkit, MobX, Zustand, or Context API** APIs & Integration * Strong experience integrating **RESTful APIs** and **GraphQL** * Familiarity with GraphQL clients such as **Apollo Client** * Experience handling authentication, authorization, and secure API consumption Development Practices * Proficiency with **Git** and modern version control workflows * Experience with automated testing frameworks such as **Jest, React Testing Library, and React Native Testing Library** * Understanding of CI/CD pipelines and modern development workflows Collaboration & Leadership * Ability to collaborate effectively with Product Managers, UI/UX Designers, Backend Engineers, and QA teams * Experience mentoring junior developers and conducting code reviews * Strong problem-solving, communication, and stakeholder management skills Good-to-Haves (Preferred Qualifications) * Experience with **Next.js** and Server-Side Rendering (SSR) * Experience with **Expo** and React Native ecosystem tools * Familiarity with **Progressive Web Applications (PWAs)** * Understanding of **WCAG accessibility standards** and inclusive design principles * Experience with performance optimization tools such as **Lighthouse**, **WebPageTest**, and React profiling tools * Knowledge of mobile app publishing processes for **Google Play Store** and **Apple App Store** * Familiarity with analytics, crash reporting, and monitoring tools such as **Firebase Analytics**, **Crashlytics**, or **Sentry** * Exposure to cloud platforms and frontend deployment practices Ideal Experience * **4–7+ years** of experience in frontend development * At least **2+ years of hands-on React Native development** * Proven experience delivering production-grade web and mobile applications using React ecosystem technologies