Senior Front-End Developer (React) - Portugal
We are looking for an experienced Senior React Developer to join our growing fintech product development team in Lisbon. You will work on a high-scale payment integration platform, writing scalable and high-performance code that powers next-generation financial solutions. Design, develop, and optimize complex front-end applications using React and TypeScript. You will ensure technical excellence, high performance, and maintainability while collaborating closely with cross-functional teams to deliver seamless payment experiences.
- Develop and maintain a complex payment integration platform using React 18+ and TypeScript.
- Write high-quality, scalable, testable, and high-performing code following the best engineering practices.
- Optimize components and application architecture from a performance and quality perspective.
- Lead assigned projects when required: assigning tasks, coordinating efforts, and monitoring performance.
- Perform code reviews, provide constructive feedback, and ensure adherence to coding standards.
- Collaborate closely with Backend, DevOps, and Product teams to deliver robust financial features.
- Stay up to date with the latest React ecosystem trends (SSR, Server Components, etc.).
- 5+ years of professional experience in web development. (required)
- 3+ years of hands-on experience with React (experience with SSR ecosystem is a plus). (required)
- Strong proficiency in TypeScript and modern JavaScript (ES6+). (required)
- Solid understanding of SOLID/GRASP principles, client-side architecture, and design patterns. (required)
- Familiarity with testing frameworks and runners (e.g., Jest, React Testing Library). (required)
- Experience consuming REST and GraphQL APIs. (required)
- Hands-on experience with build tools like ViteJS, Webpack, npm, and Linters. (required)
- Awareness of cross-browser compatibility and client-side performance considerations. (required)
- Strong problem-solving skills and ability to work independently in a fast-paced environment. (required)
- Advanced English level. (required)
- Experience with Node.js and its ecosystem. (nice-to-have)
- Experience with Docker, NGINX, and database technologies (MySQL/MongoDB). (nice-to-have)
- Experience with GraphQL integration and optimization. (nice-to-have)
- Experience setting up styling standards (CSS-in-JS, Tailwind, or Styled Components) and design systems. (nice-to-have)
- Strong product sense and a good eye for web UX/UI. (nice-to-have)
- 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.
- 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.
BrainRocket is a software development and design company founded in 2020 and headquartered in Limassol, Cyprus. It builds end-to-end technology products across industries including iGaming, fintech and marketing, covering platform development, payments, CRM, data and AI. The company employs more than 1,300 people, with additional offices in Malta, Poland, Portugal and Serbia, and has delivered over 100 products across 20 markets. BrainRocket positions itself as a full-cycle technology partner engineering software built for scale and performance.
