Senior Frontend Developer (React & Next js)

Our client, an international startup revolutionizing the book publishing industry with AI-powered tools, is looking for a skilled Frontend Developer . They are growing fast and are seeking someone with strong experience in React , Next.js , and TypeScript to join their Europe-based team. The ideal candidate is passionate about building modern, high-quality web applications in a dynamic and creative environment. Main responsibilities: Report directly to the CTO and lead the growing Frontend team. Drive the development and architecture of key frontend projects, including: Public-facing platform Internal admin tools Ensure high standards of code quality, performance, and scalability. Collaborate closely with Product, Design, and Backend teams to deliver exceptional user experiences. Mentor and support the professional growth of other frontend developers. Core skills/experience: 4 years of frontend development experience, including team or project leadership Strong skills in React , Next.js , and TypeScript Experience with Vite or Webpack , REST APIs , and CI/CD workflows (GitHub, AWS) Ability to write clean, scalable, and maintainable code Strong understanding of UI/UX , design systems, and performance best practices Proactive mindset: brings ideas, challenges assumptions, and drives improvements Passion for mentoring and supporting other developers Experience with admin dashboards or SaaS platforms (nice to have) Familiarity with Storybook and Figma (nice to have) Full Professional Level of English and Full Professional Level of Spanish or French What's on offer? A key role in a fast-growing startup where your work has real impact A hybrid model in Barcelona HQ (1 day per week of home office) An international, multicultural team and collaborative environment Flexible working hours and async-friendly communication culture Permanent contract (CDI) available in France or Spain A culture that values ownership, innovation, and continuous learning Our recruitment process? Step 1: Interview with one of our Recruiters to get to know you better Step 2: Interview with the hiring manager Step 3: Technical Interview Step 4: Interview with Founder

Location: Catalonia, ES

Posted Date: 8/13/2025