Senior Back End Engineer

Senior Back-end Engineer

Bracknell (Hybrid 2-3 days in office) | Salary £70,000 - £75,000

You will own backend services that move money in production, end to end, within a small engineering team at a global payments business. Your code ships fast and your decisions matter.

What You Will Do

• Design and own backend services across onboarding, KYC/KYB, payment initiation, FX, and settlement
• Lead the build of partner integrations and settlement infrastructure in your domain
• Lead cross-functional delivery with product, compliance, and operations from problem framing through launch
• Lead design reviews, set technical direction, and mentor mid-level engineers
• Own production health including reliability, observability, on-call, and incident response
• Use agentic coding tools daily and lead modernisation from legacy services into the modern stack

What We Are Looking For

• Proven experience building production backend services end to end
• Strong proficiency in C# / .NET
• SQL and relational database fundamentals
• Production experience with AWS including SQS, DynamoDB, S3, ECS, and Lambda
• Strong system design experience including microservices and event-driven patterns
• Payments, FX, or regulated industry experience
• Daily use of agentic coding tools across the development lifecycle

If you are a senior back-end engineer who wants real ownership in a payments business where your work ships and your decisions count, this is worth a conversation.