Senior Backend Engineer

Location: London, United Kingdom (On-site, 5 days/week)

Employment: Full-time, Senior

Visa: Open to sponsorship for exceptional candidates; relocation support may be available for top talent.

About The Company

An AI-native workspace initially designed for investment banking, private equity, consultancies, and asset managers. The company raised a historic $75M Series A in December — one of the largest fintech Series A rounds ever. With strong product-market fit and live production deployments at some of the world's largest and most prestigious institutions, the team is working across offices in New York, London, and Hong Kong to become the leading AI application platform for enterprise.

The Role

This AI-native fintech is building digital teammates for investment decision makers, serving top-tier financial institutions with a platform that accelerates M&A research and analysis. Fresh off a historic $75M Series A and rapid user growth, the company is scaling its engineering team in London to meet surging demand. The Senior Backend Engineer role is critical to delivering robust, secure, and high-performance infrastructure as the product expands across global finance.

What You'll Do

• Build and maintain scalable, secure backend systems for a high-stakes financial services environment.
• Work with Python (FastAPI), PostgreSQL, Redis, and Docker to ship production infrastructure.
• Operate distributed systems on Azure (AWS/GCP experience also considered).
• Lead technical design reviews and mentor engineers in a fast-paced, high-growth context.
• Collaborate cross-functionally with daily standups, direct communication, and full ownership of your area.
  
  

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Who We're Looking For

7+ years (up to :12) of backend engineering experience, with expert-level Python (FastAPI preferred), deep PostgreSQL knowledge, and hands-on cloud experience (Azure ideal; AWS/GCP acceptable). A first-class Bachelor's (ideally with a Master's) in Computer Science or a top technical discipline from a leading university (Oxbridge, Imperial, Durham, Edinburgh, or Ivy League) is required. Candidates must have built and maintained scalable, secure backend systems in high-stakes environments and be willing to work onsite five days a week in London.

The culture is high-performance, ambitious, and intellectually rigorous — expectations are described internally as "nearly unrealistically high." The engineering team values ownership, direct communication, and resilience.

Required:

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• Shipped and maintained backend platforms at top-tier fintechs, AI startups, or scale-ups.
• Academic pedigree: Oxbridge, Imperial, or Ivy League (first-class/Master's).
• Direct experience with Azure-based distributed systems.
• Led technical design reviews or mentored teams in high-growth contexts.
• Proven track record building secure, compliant systems for sensitive data.
• Demonstrated founder/owner mentality in prior roles.
  
  
  

Core Stack: Python, FastAPI, PostgreSQL, Redis, Docker.