Job Title

Company DescriptionWe’re – you might not know our name, but companies like eBay, ASOS, Klarna, Uber Eats, and Sony do. That moment when you check out online? We make it happen. is where the world checks out. Our global network powers billions of transactions every year, making money move without making a fuss. We spent years perfecting a service most people will never notice. Because when digital payments just work, businesses grow, customers stay, and no one stops to think about why.With 19 offices spanning six continents, we feel at home everywhere – but London is our HQ. Wherever our people work their magic, they’re fast-moving, performance-obsessed, and driven by being better every day. Ideal. Because a role here isn’t just another job; it’s a career-defining opportunity to build the future of fintech.Job DescriptionAs a Senior Software Engineer embedded within a multifunctional team, you will collaborate with Product and Design counterparts to lead the UI implementation of products and services, ensuring our merchants enjoy an optimal experience across all frontend touchpoints. We seek engineers who are versatile, demonstrate exceptional leadership qualities, and are enthusiastic about tackling new challenges across the full stack as we push technology forward. With your technical expertise, you will lead project priorities, manage deadlines, and ensure high-quality deliverables. You will be responsible for designing, developing, testing, deploying, maintaining, and enhancing software solutions.QualificationsComprehensive skills in React and TypeScript: Capable of architecting complex applications, driving best practices, and mentoring others.Extensive experience in software development, design, and architecture, with a strong focus on securityExperience collaborating on software projects with both design and backend teamsExperience with Continuous Integration and Deployment workflowsCloud-based application development experienceStrong customer focus; building accessible applications with a great UXExperience leading tech initiatives, guiding your team and deliveringExperience building reliable, accessible and well-tested systems.Great communication skills and ability to interact effectively with multidisciplinary teamsDesirableSome experience with C# is nice to haveUnderstanding of common security vulnerabilities and performance issues in web applications and knowing how to debug themExperience with asynchronous, event-driven architectureDatabase experience with NoSQL, ElasticSearch or similar toolBring all of you to workWe create the conditions for high performers to thrive – through real ownership, fewer blockers, and work that makes a difference from day one.Here, you’ll move fast, take on meaningful challenges, and be recognized for the impact you deliver. It’s a place where ambition gets met with opportunity – and where your growth is in your hands.We work as one team, and we back each other to succeed. So whatever your background or identity, if you’re ready to grow and make a difference, you’ll be right at home here.It’s important we set you up for success and make our process as accessible as possible. So let us know in your application, or tell your recruiter directly, if you need anything to make your experience or working environment more comfortable.Life at We understand that work is just one part of your life. Our hybrid working model offers flexibility, with three days per week in the office to support collaboration and connection.Curious about what it’s like to be part of our team? Visit our Careers Page to learn more about our culture, open roles, and what drives us.For a closer look at daily life at , follow us on LinkedIn and Instagram