Job Summary: We are seeking a Senior Front-End Developer to lead the evolution of a digital product within an EdTech language-learning platform, impacting the experience of thousands of students. Key Highlights: 1. Working on a production digital product with high usage volume 2. A relaxed, agile, and dynamic environment focused on creativity and collaboration 3. Contributing to the formation of a high-performance team **Job Description:** **ABOUT FLUENCYPASS** *Our mission is to transform English language learning experiences in Brazil, making them accessible to everyone. We are pioneers in offering the complete fluency journey: starting with high-quality English courses and culminating in a transformative study-abroad experience.* *Here, you’ll find a relaxed, agile, and dynamic environment where creativity and collaboration are encouraged. Our focus on clear goals drives continuous growth, while attention to detail ensures excellence in everything we do.* *We love what we do and are fully committed to each student’s success. If you’re passionate about education and want to contribute to building a high-performance team, join us on this transformative journey!* ] **SENIOR FRONT-END DEVELOPER** **JOB DESCRIPTION:** We are looking for a Senior Front-End Developer to play a leading role in evolving our digital product at a growing language EdTech company. You will work on an already-live product with high usage volume — including the lesson platform, student portal, learning paths, checkout, video integrations, and more — directly shaping the experience of thousands of students. **REQUIREMENTS AND QUALIFICATIONS:** * Solid front-end development experience (6+ years), actively using React in production. * Practical experience with Next.js in real-world applications (SSR, SSG, routing, data fetching, optimizations, etc.). * Experience with design systems or UI libraries (Material UI, Chakra, Tailwind + internal design system, etc.). * Strong command of HTML, CSS, and JavaScript (ES6+), including accessibility fundamentals and semantic best practices. * Experience consuming REST APIs (requests, error handling, caching, models, etc.). * Consistent use of Git (pull requests, code reviews, branching strategies). * Ability to read and understand large codebases confidently, including refactoring. * Ownership mindset: responsibility for final outcomes, not just task execution. * Strong communication and collaboration skills with product, design, and back-end teams. **PREFERRED QUALIFICATIONS:** * Prior experience in EdTech, SaaS, or B2C products. * Experience with video platforms and calling solutions (Amazon Chime, Twilio, Jitsi, WebRTC, VideoJS, or similar). * Knowledge of monitoring and observability tools (Sentry, LogRocket, Datadog, etc.). * Experience with product analytics (Amplitude, GA4, Mixpanel, etc.). * Practice with automated testing (Jest, React Testing Library, Cypress, or similar). * Familiarity with CI/CD (GitHub Actions, build/test/deploy pipelines). * Experience with i18n (multi-language applications) and technical SEO in Next.js. * Basic back-end knowledge (C#, Node.js, or other languages) to enhance collaboration with server-side teams. **WORK HOURS:** * 176 hours per month **BENEFITS:** * Birthday day off; * 100% scholarship for Fluencypass English courses, including private and conversation classes; * Up to 40% discount on Fluencypass study-abroad programs; * R$ 300 referral bonus; * Free snacks in the office; * Lounge area with relaxation space and massage chair; * On-site mini-market and dining area. **Location****Employment Type****Work Model** São Bernardo do Campo, SP, BR PJ Contractor On-site