Principal Software Engineer

As our Principal Software Engineer, you ll be a technical authority across our digital platforms, combining architectural vision with practical delivery. You ll:

• Lead end-to-end full-stack delivery, from backend services and APIs to customer-facing and internal applications
• Shape and evolve platform and system architecture, ensuring solutions are secure, scalable and future-ready
• Translate business strategy into robust technical designs, balancing innovation with resilience
• Set the standard for clean code, engineering best practice and quality across teams
• Drive modernisation initiatives, reducing technical debt and improving performance
• Champion DevOps, CI/CD and automation, enabling faster, safer releases
• Embed security, compliance and GDPR-by-design into everything we build
• Collaborate closely with Product, Design, Architecture and senior stakeholders
• Mentor and influence engineers at all levels, raising the bar for technical excellence

You re a strategic, hands-on technical leader who enjoys solving complex problems and influencing direction. You re trusted for your judgement, calm under pressure, and passionate about building systems that last.

You ll bring:

• Expert-level experience with C#, .NET and object-oriented design
• Strong front-end knowledge using JavaScript/TypeScript and React
• Deep experience designing and governing enterprise APIs (REST & SOAP), ideally on Azure
• Proven leadership in DevOps, CI/CD pipelines and cloud-native environments
• Advanced SQL Server and data modelling expertise
• Strong understanding of microservices and distributed systems
• Experience with CMS platforms (e.g. Umbraco) and third-party integrations
• A collaborative mindset and the ability to influence without line management

• Colleague Rate on Travel Money
• 28 days holiday (inclusive of bank holidays)
• High Street Discounts
• Free 24/7 Virtual GP service for you and your family
• Cycle to Work Scheme
• Employee Wellbeing & Financial Support through Retail Trust
• Employee Assistance Programme because you matter!
• Wagestream access your earned wages when you need it
• Recognition Awards for outstanding service
• Additional holiday entitlement after 1 year
• Life Assurance
• and much more!

Our Vision To be the UK s go-to travel money provider, adding value to every customer s journey! Our Purpose Foreign exchange but better, simpler & more convenient, we re the trusted inspirational experts. Our Values We Strive, We Trust, We re Aspirational, We re Responsible, We re Sincere