Senior Backend Engineer - Scalable Platform (London Onsite)

Dex partner company is building an AI operating system for enterprise IT, tackling complex workflows for large enterprises. You will join a lean backend team, owning core platform components and large-scale batch processing while ensuring security and observability.

You'll design the LLM gateway for token throughput and provider failover, and build internal tooling to accelerate product development. This role requires onsite collaboration with the London team five days a week.