Your Opportunity AwaitsJoin Mollie, where our mission is to simplify payments and financial management for every business in Europe and the UK. Our App Core team is dedicated to empowering product teams to deliver customer-facing features more swiftly, across both web and mobile platforms, while ensuring an exceptional developer experience.We are on the hunt for an enthusiastic UI Engineer who is passionate about platform development: enhancing the methodologies for building, releasing, and maintaining features across diverse applications and teams. Instead of focusing solely on a single user-facing feature, you will establish the groundwork that allows teams to operate efficiently and confidently—streamlining release cycles, improving tooling, infrastructure, and localization workflows.Your contributions will be pivotal in shaping systems that lie at the core of our development process, influencing how engineers construct, test, release, and scale Mollie’s offerings. Your efforts will have a direct impact on hundreds of engineers and, by extension, on thousands of customers.Become a part of a team that is not only redefining the future of payments but also implementing improvements that enable Mollie teams to deliver superior software at an accelerated pace.Your ResponsibilitiesYou will collaborate with us to design and maintain platform solutions that empower product teams to launch customer-facing features across web and mobile, serving hundreds of thousands of users monthly. Our emphasis is on creating robust foundations that enhance the development, release, and operational processes at scale.Quality and well-designed experiences are paramount to us—not just for our customers, but especially for the engineers crafting Mollie’s products. This involves developing clean, well-documented APIs, reliable tooling, and efficient workflows that facilitate development, testing, localization, and releases.As a UI Engineer, you will act as a bridge between platform capabilities and the teams that depend on them, engaging across frontend, backend, and infrastructure as necessary.With numerous releases and deployments occurring continuously on both web and mobile platforms, maintaining code quality, scalability, and reliability is essential. Anticipating needs and architecting systems that support growth, rapid release cycles, and long-term maintainability will be integral to your role.In conjunction with our existing tooling, infrastructure, and release pipelines, we are perpetually enhancing how we modernize our platform, manage mobile releases, and facilitate localization and internationalization. We are eager to discuss more over coffee, but rest assured your skills will be put to the test—and your contribution will matter.
Jan 30, 2026