We’re looking for a Principal Engineer - Payments to join Masabi’s Architecture team, with a primary focus on our payments domain. This role suits someone who can move between system-level thinking and implementation, who understands trade-offs, can navigate ambiguity and helps turn complex or loosely defined problems into clear, practical technical approaches.
Requirements
- Strong experience working on payment systems, including integrations with PSPs, gateways or acquirers
- Good understanding of payment flows, transaction lifecycles and system design considerations
- Experience designing and evolving distributed systems and microservices architectures
- Strong judgement and the ability to balance short-term delivery with long-term architectural outcomes
- Comfortable navigating ambiguity and turning complex problems into clear, practical technical approaches
- Clear and thoughtful communicator, able to engage both technical and non-technical audiences
- Comfortable being hands-on where needed, while maintaining a focus on system-level impact
- You have strong experience with cloud platforms (AWS preferred) and modern infrastructure practices
- You’ve worked on systems where scale, reliability, performance and cost trade-offs matter, and can navigate those decisions thoughtfully
- You’ve contributed to engineering standards, architecture patterns or platform direction
- Interest in or exposure to AI-enabled systems, particularly understanding architectural implications in production
Benefits
- Flexible working hours
- Remote work option
- Hybrid work option (for those based in or around London)
- Clear and thoughtful communication
- Opportunities for career growth and development
- Diverse and inclusive work environment
- Support for underrepresented groups and individuals with disabilities