Madrid SENIOR REACT DEVELOPER Hello! Choosing Capgemini means choosing the opportunity to shape your professional career as you wish. You’ll receive support and inspiration from a collaborative community of colleagues around the world and be able to reinvent what’s possible. Join our team and help the world’s leading organizations discover the value of technology and build a more sustainable and inclusive world. Would you like to join the team and participate in a banking-sector project as part of a multidisciplinary team within an international IT consulting firm, aiming to implement the development of tools, platforms, and applications designed to ensure digital accessibility, enhance user experience, and promote equal opportunities in digital environments? What would your responsibilities be?* Actively participate in developing modern web applications using React and TypeScript. * Design and implement reusable and scalable components. * Conduct unit tests using React Testing Library and Jest. * Apply sound object-oriented programming (OOP) practices where necessary. * Collaborate in defining architectures based on Domain-Driven Design (DDD) and Hexagonal Architecture principles. * Ensure applications comply with accessibility and security standards. * Contribute to projects related to the Sustainable Development Goals (SDGs) or onboarding processes (valued). To thrive in this position, you need knowledge/experience in: * Minimum 3 years of JavaScript development experience. * At least 2 years working with TypeScript, including use of generics. * Experience with React, especially versions 16 and 18. * Solid knowledge of unit testing with React Testing Library and Jest. * Proficiency in CSS, especially Styled Components. **Valuable knowledge:** * Knowledge of OOP. * Prior experience in SDG-focused projects or onboarding processes. * Familiarity with design patterns and layered responsibility separation. * Knowledge of web accessibility and secure development. * Languages: English at B2 level or higher, fluent Spanish. **What will you enjoy about working here?** We offer a comprehensive set of Development and Work-Life Balance measures, such as: * Wellbeing HUB — Includes policies and initiatives for physical health (Wellhub) and mental health. * FlexAbroad: possibility to work remotely from another country for up to 45 days. * Flexible Compensation Plan (health insurance, transportation, training, meal card or food allowance, childcare…) * Continuous training—you’ll have access to MyLearning and Capgemini University, as well as our Digital Campuses and Professional Communities. You’ll also gain access to platforms such as Coursera, Udemy, Pluralsight, Harvard Manager Mentor, and Education First for languages (English, French, German…) — among others! * Life and Accident Insurance **Why Capgemini?** Capgemini is a global leader in transforming clients’ businesses by harnessing the full power of technology. Our purpose is to achieve an inclusive and sustainable future through technology and the energy of those who develop it. We are a responsible and diverse company, an international leader in IT and Engineering services, with over 360,000 professionals across more than 50 countries. With a strong 55-year heritage and broad industry expertise, clients trust Capgemini to address their full business needs—from strategy and design to operations—powered by the fast-moving and innovative worlds of cloud, data, AI, connectivity, software, platforms, and digital engineering. In 2022, the Group reported global revenues of €22 billion. Rewrite your future. Join the team! www.capgemini.com/es-es #LI-MR1 Ref. code 327227-es_ES Posted on 12 Sep 2025 Experience level Experienced Professionals Contract type Permanent Location Madrid Business unit ABL Southern Central Europe Brand Capgemini Professional communities SaaS Solutions