Senior Software Engineer

🔥Senior Backend Engineer🔥

Series-A Fintech AI Startup

📍 London | Hybrid

💸 £100k–£200k base (depending on experience)

đź§© $160k equity over 4 years (vesting annually)

đź’— Perks: catered lunches, gym access, private healthcare

This is a career-defining opportunity for a senior engineer ready to make a measurable impact.

Join a rapidly growing, product-focused company designing core backend systems for high-stakes financial applications. After a successful Series A, the team is scaling an elite engineering unit responsible for owning critical systems end-to-end. This is real software, real customers, real influence.

You’ll collaborate directly with the founders no bureaucracy, no slow approvals, no endless hand-offs. Decisions are fast, feedback is instant, and growth is accelerated. If flexibility is your main priority, this may not be the role but if ownership, impact, and career progression drive you, this could be ideal.

What you’ll do:

  • Design and implement scalable backend APIs and services using Python (FastAPI/Django)
  • Build robust, large-scale data pipelines for financial systems
  • Ensure secure, compliant, production-ready infrastructure
  • Partner with ML engineers to deploy models into production

Who succeeds here:

  • Professional backend experience with full production ownership.
  • Advanced Python skills, database expertise, experience with async processing and distributed systems.
  • Comfortable in cloud environments (AWS/Azure), containerization (Docker/K8s), CI/CD pipelines.
  • Thrives in autonomous, ambiguous, high-impact environments.

This is one of Europe’s most exciting Senior Backend Engineer roles, offering the chance to take real ownership, influence product direction, and accelerate your career.

Job Details

Company
Omnis Partners
Location
City of London, London, United Kingdom
Posted