Long-term - 100% remote The Role: We are looking for a Senior Fullstack Developer (Next.js+React.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 are looking for: You have +3 years experience with both Next.js and React.js; You have an extensive experience with JavaScript and EcmaScript6 You have strong understanding of state management framework - Redux, React Context, Mobx; You have a strong technical background, excellent understanding of OOP concepts, and web and front end application development designs; You have proficient understanding of web markup, including HTML5, CSS3; You have profound knowledge of cross-browser compatibility issues and ways to work around them; You’re confident using frontend testing: Jest, React Testing Library, Enzyme; You have a good understanding of responsive web development; You’re familiar with SEO principles and ensuring that application will adhere to them; Responsible and able to work with minimal supervision; Upper-intermediate English level; You can communicate well with both technical and non-technical clients. Nice-to-have: Timezone: CET (+/- 3 hours); Knowledge of TypeScript. Responsibilities: Develop new highly-responsive, web-based user interface; Work and collaborate with the rest of the engineering team; Learn and understand user interactions; Develop a flexible and well-structured front-end architecture, along with the APIs to support it; Develop new user-facing features using React.js; Build reusable components and front-end libraries for future use; Translate designs and wireframes into high-quality code; Optimize components for maximum performance across a vast array of web-capable devices and browsers; Stay up-to-date with the latest technologies. What Proxify offers Career-accelerating positions at cutting-edge companiesDiscover exclusive long-term remote engagements at the world's most interesting product companies. Hand-picked opportunities, just for youSkip the typical recruitment roadblocks and biases with personally matched engagements. Fast-track your independent developer careerStart small and gain more freedom to take on new engagements as you build your independent developer career. A recruitment process that values your timeOnly one hiring process with the possibility of several positions, without any additional tests.