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Staff Engineer -Back-End

Closed

Key points

  • 18/12/25
  • London, London
  • £100k - 130k per year
  • Permanent
  • Software Engineering
  • Full time

Job role

Staff Engineer – Backend (Python)

Salary: £100k–£130k + equity & benefits Location: Fully Remote within the UK or Hybrid in Central London

They are building breakthrough AI systems tackling some of the hardest problems in workflow orchestration and document reasoning. Already revenue-generating with growth set to double early next year, they’re scaling fast and hiring multiple engineers to join their journey.

What You’ll Do

  • Architect and scale backend systems to handle millions of workflows in real-time.

  • Deliver sub-second performance across thousands of concurrent operations.

  • Lead technical innovation and guide a senior engineering team.

  • Design APIs and service architectures for complex, multi-agent AI platforms.

What They’re Looking For

  • 12+ years backend engineering experience, with expert-level Python.

  • Proven track record in SaaS and start-up environments.

  • Deep systems architecture and performance engineering expertise.

  • Experience with async Python, distributed systems, and high-performance databases.

Nice-to-Have

  • TypeScript/Node.js exposure.

  • Background in AI/ML platforms or workflow engines.

  • Experience in regulated industries and cloud/containerized deployments.

Why Join

  • Career-defining project with massive technical impact.

  • Work alongside brilliant engineers and industry veterans.

  • Competitive salary, equity, and comprehensive benefits.

  • Fast-paced, collaborative culture with real ownership.

Matt Challis

Software Engineering Managing Consultant, London

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