Senior .NET Engineer

Senior .NET Software Engineer (TDD & Agentic AI Workflows) | Up to £80,000 | London

I'm recruiting on behalf of a well-established UK insurance broker (17 years in business, freshly invested in to grow into new markets) who need a brilliant .NET engineer to join as their second senior hire.

The mission: drive proper test-driven development and strong unit-testing practices across the team, then use that foundation to build an agentic AI workflow - where engineers write clear requirements and tests, and AI agents handle implementation, raising pull requests the team can actually trust. You'd still be hands-on, building and maintaining core software alongside leading this initiative.

What you'll be doing:

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• Championing TDD and unit-testing best practice across the team
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• Designing and rolling out an agentic AI workflow, including server-side AI code review and quality checks wired into CI/CD and GitHub
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• Analysing existing codebases for risks and improvement opportunities
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• Working with stakeholders to translate business needs into technical solutions
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• Deploying to AWS with a focus on scalability, security and reliability
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• Writing clean, well-tested, well-documented code
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• Supporting monitoring, alerting and production troubleshooting
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What's on offer:

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• 20 days' holiday, rising to 25 with service
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• Genuine influence over engineering culture and practices from an early stage
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• A close-knit team spanning the UK and India
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Location: London (hybrid/occasional WFH)Level: Senior - second engineering hire

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