Senior Software Developer

Corpay Cross‑Border is seeking a Full Stack Senior Software Developer to join our agile development team in London. In this role, you will advance our core international payment processing systems—driving innovation in forex and e‑commerce software that powers global payments. You’ll report to the Software Development Manager and collaborate closely with Product Owners, QA Engineers, and Scrum Masters.
How We Work
As a Full Stack Senior Software Developer, you will thrive in a hybrid environment, splitting your time between our London office and remote work. Corpay Cross‑Border will set you up for success by providing:
Assigned desk in our London office
Company‑issued development hardware and software licenses
Formal, hands‑on onboarding and ongoing training
Role Responsibilities
Collaborate with business stakeholders to gather requirements and clarify technical questions
Decompose features into actionable tasks, estimate effort, and deliver on sprint commitments
Design, develop, and maintain scalable front‑end and back‑end solutions using .NET, C#, JavaScript, and TypeScript
Write clean, efficient, and maintainable code following Agile methodologies, unit testing, and CI/CD best practices
Participate in peer code reviews to ensure code quality and shared ownership
Build and consume HTTP‑based Web APIs and integrate third‑party services
Troubleshoot, debug, and optimize existing systems for reliability and performance
Contribute to architectural discussions around distributed applications, service buses, multi‑threading, and parallel processing
Mentor junior developers and share knowledge of legacy systems (VB.NET, VB6) as needed