Principal Engineer

Salary: £90,000 - 100,000 per year

Requirements:

• Extensive experience with .NET / C# in large-scale, complex systems
• Strong hands-on experience with AWS cloud platforms
• Proven experience designing scalable, distributed, and microservices architectures
• Deep understanding of APIs, system design, and integration patterns
• Strong experience with DevOps, CI/CD, and modern engineering practices
• Ability to influence technical direction through expertise rather than authority
• Experience with Docker, Kubernetes, or containerisation is desirable
• Knowledge of event-driven systems and architectures is desirable
• Exposure to front-end technologies such as React or Angular is desirable
• Experience within fintech or regulated environments is desirable

Responsibilities:

• Design and build scalable, distributed systems using .NET (C#)
• Define and evolve system architecture across AWS cloud environments
• Lead complex technical challenges and system design decisions
• Ensure platforms are built for performance, scalability, security, and resilience
• Act as a go-to technical expert within the engineering function
• Champion best practices, clean code, and modern engineering standards
• Contribute to architectural discussions and guide technical direction without line management responsibility
• Support and influence the wider engineering team through knowledge sharing and technical mentorship
• Contribute directly to coding, design, and delivery of key systems
• Work across the full lifecycle from design through to deployment and optimisation
• Drive improvement across CI/CD, DevOps, and cloud-native practices
• Collaborate closely with Product and Engineering teams to deliver high-impact solutions

Technologies:

• AWS
• Angular
• C#
• CI/CD
• Cloud
• DevOps
• Docker
• Support
• Kubernetes
• React
• Security
• microservices
• ASP.NET

More:

We are hiring a Principal Software Engineer to join our high-performing engineering function in Manchester on a hybrid basis. This is a senior individual contributor role where you will help shape the future of cloud-native fintech engineering, work on scalable platforms with real-world impact, and enjoy a high level of technical autonomy and influence. You will join a strong engineering culture with a modern technology stack and the opportunity to remain deeply hands-on while driving architecture and engineering direction at scale. The role offers a salary of £90,000+ depending on experience.

last updated 31 week of 2026