Senior FinTech Software Engineer – Cross-Border Payments

Corpay; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

4x life insurance

Pension scheme – 5% employer

Private healthcare

25 days' holiday

Job summary

Corpay is seeking a Senior Software Developer to join the Cross-Border division in London. You will help evolve our platforms powering international payments and FX capabilities, delivering secure, scalable software in a fintech environment.

You will collaborate with Product Owners, Scrum Masters, QA, and developers to design, build, test, and maintain applications, while balancing performance, security, and business value.

Qualifications

• Bachelor’s degree or equivalent professional experience.
• 8+ years of professional software development experience.
• Strong experience with C# and .NET development across web and/or desktop applications.
• Experience with JavaScript or TypeScript.
• Strong knowledge of SQL Server, relational database design, stored procedures, and T-SQL.
• Experience developing HTTP APIs and service-oriented or distributed systems.
• Experience working with message queues, service buses, asynchronous processing, or event-driven architectures.
• Experience writing unit tests and applying modern software engineering practices.
• Experience working within Agile software development teams.

Responsibilities

• Collaborating with business stakeholders to gather requirements and address technical questions.
• Providing technical guidance to other developers, contributing to architectural decisions, and helping improve engineering practices across the team.
• Breaking down technical work into actionable tasks to meet project deadlines and business objectives.
• Designing, developing, and maintaining scalable front-end and back-end applications.
• Writing clean, efficient, and maintainable code by following Agile development practices, unit testing standards, continuous integration, and clean coding principles.
• Participating in code reviews to maintain high-quality software standards.
• Taking ownership of complex technical challenges from discovery through delivery while balancing maintainability, performance, security, and business value.
• Developing and maintaining application features with a focus on scalability, reliability, and performance.
• Collaborating closely with Product Owners, Scrum Masters, QA Engineers, and other Software Developers throughout the software development lifecycle.
• Troubleshooting, debugging, and optimizing existing systems to ensure stability and performance.

Skills

C# / .NET

JavaScript / TypeScript

SQL Server

HTTP APIs

Message Queues / event-driven

Unit tests

Agile

Education

Bachelor’s degree in Computer Science, Software Engineering, or equivalent

Tools

React

Blazor

VB.NET

Job description

Corpay is seeking a Senior Software Developer to join the Cross-Border division in London. You will help evolve our platforms powering international payments and FX capabilities, delivering secure, scalable software in a fintech environment.

You will collaborate with Product Owners, Scrum Masters, QA, and developers to design, build, test, and maintain applications, while balancing performance, security, and business value.