Back End Engineer

About the company

The company is an early-stage AI business building tools that help creative teams make better decisions about the content they produce. Its technology learns from real-world signals to improve how AI systems generate and refine work.

The team combines applied AI research with strong engineering, and its platform enables researchers and engineers to build, test and ship new capabilities quickly. The product is already in use with customers, and the focus now is on making the underlying systems faster, more reliable and ready for much larger scale.

All Engineers in the business have real ownership over what they build and a direct influence on the product and technical direction. Backed by investors and growing steadily, the company offers the chance to shape core infrastructure at an early and important stage.

What the job entails

As a Back End Engineer, you will own the core platform that underpins the company’s products, including service communication, deployment, job orchestration, APIs and databases. You will help prepare the platform to handle significantly higher throughput while keeping production services reliable.

You will shape system architecture, including service boundaries and data and API contracts, and lead a major infrastructure migration without disrupting live workloads. You will also oversee CI/CD, observability, incident response and the systems that support long-running, multi-step processing. A key part of the role is building reliable internal APIs and maintaining a performant data platform, including schema design and migrations.

Working closely with engineering leadership and the wider technical team, you will help set backend engineering standards and improve how the team builds and ships software. The role is based in London, with a hybrid arrangement requiring four days in the office.

Key requirements / What we look for

• A relevant degree or equivalent experience, with strong production experience in modern backend languages.
• At least four years building and operating production backend systems.
• Strong experience with workflow and job systems, relational databases and live migrations.
• Experience scaling infrastructure, leading a significant platform migration and owning infrastructure end to end.
• Technical leadership experience, including setting direction, reviewing designs or mentoring.
• Able to discuss systems you have built in technical depth. Experience with cloud and edge platforms is advantageous.