Principal Back-End Engineer

You’ll join a business with a complex technology landscape and a significant programme underway to improve how its core applications and services communicate. The environment spans C# .NET, Python and Azure, and you’ll have considerable freedom to assess what’s there, challenge existing thinking and help shape the right technical approach., * Remaining hands-on with the code while providing technical direction across backend engineering.

• Owning and evolving the architecture connecting core platforms, internal applications and external services.
• Designing and delivering APIs, integrations, messaging and event-driven solutions.
• Reviewing existing architecture and proposed designs, making pragmatic recommendations and leading them through to delivery.
• Working across C# .NET, Python and Azure, including cloud-based integration technologies.
• Supporting other engineers and helping improve technical standards, testing, code quality and development practices.
• Using AI-augmented development practices to improve engineering quality, speed and delivery, with appropriate controls and validation.
• Working closely with technical and business stakeholders to turn complex requirements into effective solutions.

You’ll already be operating at Senior, Lead or Principal Engineer level and will have deep hands-on expertise in C# .NET or Python (ideally both!).

We’re particularly interested in engineers who:

• Are comfortable working beyond their primary language and across a mixed technology environment.
• Have strong backend experience across APIs, integrations and event-driven architectures.
• Have integrated enterprise platforms, internally developed systems and third-party applications.
• Understand SQL, data modelling, cloud engineering and modern CI/CD practices.
• Can take a technical problem from investigation and architecture through to hands-on delivery.
• Make pragmatic technical decisions with scalability and maintainability in mind.
• Communicate well with engineers and non-technical stakeholders alike.
• Have already embedded AI into their engineering workflow and can demonstrate a thoughtful, responsible approach to its use.

Experience with IaC, Terraform, broader full-stack technologies or platform/service-based environments would be useful but isn’t essential.

The role is largely remote with no mandated office days, but the team values face-to-face collaboration. We’re therefore looking for someone happy to collaborate in person 1-2 days per week in Central London, when it makes sense to work together.

Package: £90,000-£110,000 + bonus and comprehensive benefits

Please apply today for immediate CV review and September interviews.

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