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Senior Backend Engineer

London, UK Hybrid Full-time Senior £90k–£120k
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About the role

We’re partnering with a Series B fintech building the payments rails for thousands of European businesses. They’re hiring a Senior Backend Engineer to own critical services from design through to production.

You’ll work in a small, high-trust team where engineers ship to production daily and own their work end-to-end, no hand-offs, no ticket factories.

What you’ll do

  • Design, build and operate high-throughput backend services handling real money movement
  • Lead technical design for new product areas and mentor mid-level engineers
  • Improve reliability, observability and performance of existing systems
  • Partner closely with product to scope and sequence delivery

What we’re looking for

  • 5+ years building production backend systems at scale
  • Deep experience with a typed language, Go, Java, C# or TypeScript
  • Strong fundamentals: data modelling, APIs, queues, testing, CI/CD
  • Comfort owning services in production (on-call is shared and humane)
  • Bonus: fintech, payments or other regulated-domain experience

Why this one

Real ownership, a product people actually use, and a team that’s technically screened by us, so you’ll be interviewing alongside genuinely strong engineers.

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