Data Engineer

Senior / Staff / Principal Data Engineer | Up to £220k | London, Hybrid

A well-funded AI company is building interactive digital environments used to train and evaluate increasingly capable AI agents.

Their platform processes large, complex and often unstructured datasets, turning them into secure, reliable training data. They are now hiring a senior Data Engineer to own this area within the wider Platform Engineering team.

This is a software-first Data Engineering position with broad ownership across architecture, implementation and production operation.

• Build scalable systems for acquiring, ingesting and processing complex datasets
• Own data systems from initial problem definition through to production
• Improve data quality, provenance, security and sanitisation
• Make architectural decisions across storage, processing, reliability and cost
• Work closely with Platform and Software Engineers on core product infrastructure

• Strong software engineering fundamentals and recent hands-on coding experience
• Experience owning substantial production data systems end to end
• Background working with large, messy or technically difficult datasets
• Strong knowledge of distributed systems, batch or streaming architectures
• Ability to explain technical trade-offs, failure modes and architectural decisions
• Comfortable taking ambiguous problems forward without detailed specifications

Stack-agnostic. Relevant experience could include distributed data systems, large-scale ingestion, batch or streaming processing, unstructured data and data-platform infrastructure.

London, hybrid with 2 to 3 days per week onsite. Applicants must already have the right to work in the UK as sponsorship is unavailable.

Up to £220,000, depending on level and experience.