Senior Full Stack Software Engineer, Payex (Frontend-Focused) at Flywire1

We at Flywire are looking for an experienced Senior Full Stack Software Engineer I with a strong background in product-oriented FinTech environments. In this role, you will play a key part in building and maintaining the core payment experience that powers our platform—supporting the movement of hundreds of millions in transactions for thousands of users every day. You will join a team responsible for designing new features and enhancing existing ones to improve engagement, conversion, performance, cost efficiency, and scalability. We value engineers who take ownership, think pragmatically, and collaborate closely to deliver high-quality products that feel like a shared team responsibility. As a full stack engineer, you will contribute across both frontend and backend, ensuring high-quality delivery within agreed timelines. What you’ll do • Write clean, high-quality, testable, secure, and maintainable code • Troubleshoot and resolve complex bugs and production issues • Tackle challenging problems that require deep analysis and thoughtful evaluation of multiple factors • Apply sound judgment in selecting methods, techniques, and evaluation criteria to deliver effective solutions • Drive improvements across all phases of the software development lifecycle • Ensure optimal performance, quality, and responsiveness of applications • Collaborate with cross-functional stakeholders across engineering, product, and design to shape product direction • Work effectively with globally distributed teams, understanding and addressing diverse needs • Support and mentor fellow engineers, contributing to a culture of continuous learning and growth