Senior Front-End Developer (React) - Relocation to Portugal Required

❗️ **Please Note:** This position is listed as "Remote" to reach top talent worldwide. However, please be aware that this is an **on\-site role** in the **Lisbon Metropolitan area** . Remote or hybrid arrangements are not available. We are looking for candidates eager to relocate and grow their careers in **Portugal** . ✈️ **Relocation Support:** We provide a full relocation package and visa sponsorship for successful international candidates. 📍 **Office Location:** **BrainRocket Portugal** **🚀 BrainRocket** is a global company creating **end\-to\-end tech products** for clients across **Fintech, iGaming, and Marketing** . Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating innovative ideas and products. **We don’t follow formats. We shape them. We build what works, launch it fast, and make sure it hits.** We're looking for **Senior Front\-End Developer (React)** ✅Requirements: * 5\+ years of professional front\-end development. * 3\+ years using React (16\.8\+) in production environments. * Strong proficiency in TypeScript, including strict\-mode. * Hands\-on experience writing unit tests (Jest) and E2E tests (Cypress or Playwright), with CI integration. * Experience with TanStack Query (or similar) for REST/GraphQL data\-fetching. * Experience with React Hook Form (or equivalent) and schema\-based validation for complex forms. * Knowledge of modern state management patterns using Zustand, Redux, or equivalent. * Familiarity with modern build tooling like Vite (preferred), Webpack 5, or similar ES\-modules pipeline. * Intermediate level of English. ✅Would be a plus: * Proven ability to refactor large front\-end codebases—optimising data\-fetch patterns, state management, and component architecture. * Deep familiarity with modern data\-grid libraries—preferably TanStack React Table 8 (virtualised rows, column meta, server\-side filtering/pagination). * Experience building UIs with Chakra UI or equivalent component libraries with custom theming. * Familiarity with Storybook. * Experience designing and implementing infrastructure for AI agent systems. ✅ Responsibilities: * Maintain and enhance existing React/TypeScript UIs, emphasizing stability. * Build new features on top of an established system, following defined architecture and design patterns. * Drive stability efforts—quickly resolve critical bugs and regressions, and proactively refactor fragile parts of the codebase. * Collaborate closely with Product, Design, and Backend teams to deliver frontend features on schedule without sacrificing code quality. * Participate actively in code reviews, mentor teammates, and help maintain high standards for code hygiene, CI quality, and technical documentation. **✅ Recruitment Process:** **1\. Interview with the Recruiter:** An introductory conversation to get to know you better, discuss your background, and align expectations about the role and the company. **2\. Technical Assessment (HackerRank):** A short coding challenge designed to evaluate your technical skills and problem\-solving abilities. **3\. Technical Interview:** An in\-depth discussion about your technical expertise, hands\-on experience, and approach to solving real\-world problems. **4\. Final Interview with the Hiring Team:** A conversation with team members and leadership to assess cultural fit, collaboration style, and alignment with the team’s goals. **5\. Offer:** If everything goes well, we’ll move forward with a formal offer to join our team. **✅ We offer excellent benefits, including but not limited to:** 💻 Learning and development opportunities and interesting, challenging tasks. ✈️ Relocation package (tickets, staying in a hotel for up to 2 weeks, and visa relocation support for our employees and their family members). 📚 Opportunity to develop language skills, with partial compensation for the cost of English and Portuguese language classes (for localization purposes). 🎾 Partial compensation for tennis and padel lessons. 🏀 Urban Sport membership benefit (the most diverse sports and wellness offering in Europe, with more than 50\+ activities). 🏥 Private medical coverage, including inpatient, outpatient, dental care, annual check\-ups, and maternity support. 🏝 Time for proper rest, with 24 non\-business days per year and an additional 6 paid sick days. 🚌 Transport compensation \- 200 euros net per month. 📈 Competitive remuneration level with annual review. 🤝 Teambuilding activities. Bold moves start here. Make yours. Apply today! **By submitting your application, you agree to our Privacy Policy.**