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Confidential company

Job listing

London, United KingdomNot Disclosed

Backend Engineer at well-funded fintech SaaS

Are you a Python expert looking to own high-impact scaling projects at a well-funded fintech SaaS? We are looking for a London-based Backend Engineer to build robust APIs with FastAPI and drive production reliability. This is a rare opportunity to join a top-tier VC-backed team where you will have full autonomy over your services and work with a modern, event-driven stack. If you have 4+ years of experience and a passion for building resilient systems, this hybrid role in London is the perfect next step for your career.

Overview

Role overview

As a Backend Engineer, you will build and scale high-performance APIs for a fast-growing fintech platform. You will take full ownership of production services using Python and FastAPI, ensuring system reliability and performance. This is a hybrid role based in London, offering the chance to solve complex technical challenges within a collaborative engineering environment.

Company

About the company

Well-funded fintech SaaS

Responsibilities

What you will do

  • Design, develop, and maintain robust backend APIs using Python (FastAPI) and SQL.
  • Take full end-to-end ownership of production services from initial design through to deployment and monitoring.
  • Collaborate with cross-functional teams to architect scalable systems and implement event-driven architectures.

Candidate profile

Who this is a fit for

  • Has 4+ years of professional experience building and maintaining production APIs with strong proficiency in Python.
  • Demonstrates deep expertise in SQL and database management, specifically with Postgres and Redis environments.
  • Shows a proven track record of owning scaling or reliability projects with exposure to AWS and containerization tools.

What makes it remarkable

Why this role is remarkable

  • Work with a modern, high-performance tech stack including FastAPI, Redis, and Postgres in a high-growth environment.
  • Join a well-funded organization backed by top-tier VCs that prioritizes technical excellence and production stability.
  • Take significant ownership over scaling projects and reliability initiatives that directly impact the product roadmap.

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