Job title: Senior Backend Engineer (Python) - London
Job type: Permanent
Emp type: Full-time
Salary type: Annual
Salary: GBP £160,000.00
Location: London
Job published: 04/08/2026
Job ID: 56543
Contact name: Nathan Laidlaw
Phone number: +447735484115
Contact email: nathan@transparent.tech

Job Description

Senior Backend Engineer | London / Remote Europe | AI Data Platform | Python, FastAPI | £100,000-£160,000 + Bonus + ESOP

We're partnering with a fast-growing AI startup building one of the leading real-time intelligence platforms for private markets. Their product is already trusted by hundreds of Venture Capital and Private Equity firms, helping investors make faster, smarter investment decisions through live data and AI-powered analysis. With around 30 employees and strong growth ahead, they're now looking for a Senior Backend Engineer to help build the production infrastructure powering the next generation of their AI platform.

This is a backend-first engineering role with AI at its core. You'll design and build production APIs using Python and FastAPI, develop the infrastructure behind agentic AI capabilities, work with high-volume datasets and modern databases, and help take AI features from prototype into production. Working directly with the founders and a highly technical engineering team, you'll have significant ownership whilst remaining hands-on as an individual contributor.

We're looking for someone with experience in:

  • Python and FastAPI
  • Production backend APIs and services
  • PostgreSQL and SQL
  • Building and owning production systems
  • AI or LLM-powered features in production
  • Startups or scale-ups (30-100 people)
  • Strong software architecture and backend design
  • ClickHouse, Snowflake or Redshift (desirable)
  • Infrastructure, DevOps or cloud engineering (desirable)

This is a fantastic opportunity to join a profitable, high-growth AI company before its next phase of expansion. You'll work directly alongside the founders, help scale an engineering team from around 7 to 30+, receive annual bonuses, ESOP participation and have genuine influence over both the technical architecture and future direction of the product.

For a confidential discussion, contact Nathan Laidlaw at Transparent Technology.

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