Senior Frontend Developer (React.js / Next.js)

About us: Talent has no borders. Proxify's mission is to connect top developers around the world with opportunities they deserve. So, it doesn't matter where you are; we are here to help you fast-track your independent career in the right direction. 🙂 Since our launch, Proxify's developers have successfully worked with 1200+ happy clients to build their products and growth features. 5000+ talented developers trust Proxify and its network to fulfill their dreams and objectives. Proxify is shaped by a global network of supportive, talented developers interested in remote full-time jobs. Our Glassdoor (4.5/5) and Trustpilot (4.8/5) ratings reflect the trust developers place in us and our commitment to our members' success. The Role: We are looking for a Senior Frontend Developer with strong proficiency with React.js and Next.js for one of our clients. You are a perfect candidate if you are growth-oriented, you love what you do, and you enjoy working on new ideas to develop exciting products. What we’re looking for: Minimum of 5 years of experience in frontend development with a strong portfolio of projects demonstrating expertise in React.js and Next.js. Proficiency in HTML, CSS, JavaScript, TypeScript, and modern frontend development tools and frameworks. Experience with state management libraries such as Redux, MobX, or similar. Proficiency with testing frameworks and tools like Jest, Cypress, or Testing Library. Strong knowledge of version control systems, particularly Git. Located in CET timezone (+/- 3 hours), we are unable to consider applications from candidates in other time zones. Responsibilities: Design, develop, and maintain high-performance, scalable web applications using React.js and Next.js. Create reusable and maintainable UI components with a focus on performance and accessibility. Work closely with designers, backend developers, and product managers to translate user needs and business goals into functional and engaging web applications. Write clean