Senior FrontEnd Developer (VueJS / React)

Senior FrontEnd Developer (VueJS / React) Mangopay is a wallet-based payment infrastructure built specifically for organisations with complex, multi-party fund flows. A pioneer in multi-party payments. Our solution optimises fund flows on behalf of the organisations we work with using wallets as programmable, composable building blocks. Mangopay’s regulated platform collects payments, secures transactions and holds funds, splits money between the various parties in the funds flow, and ultimately manages the payout to service providers, sellers, and consumers. Platforms and fintechs using Mangopay regain control and transparency over multi-party payment flows , generate additional revenue, and improve operational efficiency. They can stay compliant while innovating and scaling. Job Description Are you a Senior Frontend Engineer passionate about creating top-tier user experiences and driving technical excellence? We are seeking a talented individual to contribute to the development of Mangopay customer-facing products, including our Dashboard and design system. If you thrive in a collaborative, cross-functional and innovative environment, we want to hear from you. What you'll be doing: Develop and Maintain Frontend Applications: Utilize your expertise in Vue.js as well as React to build and refine our robust frontend applications, ensuring a seamless and engaging user experience. Collaborate on Design System: Work closely with our designers to develop Mangopay’s design system, ensuring consistency and quality across all products. Also make sure the Components are well covered and tested (Component and visual tests) Enhance CI/CD & Deployment Pipelines: Play a critical role in improving our Continuous Integration/Continuous Deployment pipelines, driving efficiency and reliability in our deployment processes. Operate Applications in Production: Ensure the smooth operation of frontend applications in production environments, monitoring performance, troubleshooting issues, and implementing improvements to guarantee high availability and responsiveness. What we would love you to bring with you: Must have: 5+ years of experience in developing frontend applications using Vue.js , React or similar frameworks. Deep expertise in AI code generation (Claude code, Codex or similar) Strong experience in creating design systems and related tooling from scratch Strong experience in Frontend application testing, including but not limited to End-to-end and Component testing (Playwright, Cypress, or similar), Visual testing (Chromatic or similar) Expertise in enhancing CI/CD and deployment pipelines to streamline development processes (TeamCity, Gitlab). A passion for code quality and software craftsmanship. Nice to have: Experience in operating applications in production, including performance monitoring and troubleshooting (AWS, Kubernetes, Grafana). Recruitment process: HR call (30 min) Technical Interview Interview with the VP of the Universe Département Technology Locations Mangopay Poland - Warsaw Remote status Hybrid Employment type Full-time About Mangopay Founded in 2013, Mangopay is the wallet-first infrastructure for multi-party payment flows, designed to give platforms the control, scalability, and revenue opportunities they need to thrive. Mangopay offers programmable wallets that mirror real-world multi-party experiences, enabling platforms to hold, split, and move funds across buyers, sellers, and partners, while unlocking new monetization streams. With over €160 billion processed, 700 million wallets created, and 350 million users onboarded, Mangopay has demonstrated scale and reliability. Leading platforms like Vinted, Mirakl, Wallapop, Chrono24, and Debenhams use Mangopay to power complex flows, double transaction volumes, and streamline global operations.