Backend Engineer at well-funded AI startup

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network.

The next step is to speak to Jack.

Well-funded AI startup

You will join a high-performing engineering team to build and scale robust backend services powering innovative AI applications. As a core contributor, you will take ownership of production systems, design efficient APIs using Python and FastAPI, and optimize data workflows. This is a critical role for an engineer who thrives on technical autonomy and high-impact shipping.

London, UK

• Opportunity to work at the intersection of high-performance backend engineering and cutting-edge AI technology.
• Backed by top-tier VCs with a clear roadmap for scaling the core product suite globally.
• Hybrid working culture in Central London that balances collaborative in-office sessions with deep-work flexibility.

• Design, build, and maintain high-performance APIs and microservices using Python, FastAPI, and Postgres.
• Architect and optimize data models and caching strategies utilizing Redis to ensure system reliability and speed.
• Lead production deployments and own the end-to-end lifecycle of critical services from design to monitoring.

• 4+ years of professional experience building scalable backend systems with a focus on Python and SQL.
• Proven track record of owning production services and delivering projects focused on reliability or system scaling.
• Strong architectural foundations with experience in event-driven systems or containerization using Docker and Kubernetes.

Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire.

Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.