Agent Runtime & Systems - Member of Technical Staff

Callosum · London

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Company
Callosum
Location
London
Posted
August 20, 2026

About this job

About the Role Most agent frameworks are designed for short-lived workflows, best-effort execution, and a narrow set of tools. Callosum is building for a different world: agents that run for weeks, operate across distributed infrastructure, and interact with stateful systems where failures, retries, and side effects must be handled explicitly. Success in this environment requires an agent runtime built entirely from first principles. Sitting at the heart of our technical mission, this position owns the runtime and programming model for long-running agent systems. Your focus will span durable execution, checkpointing and replay, distributed scheduling, secure tool execution, and end-to-end observability.…

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Salaries in Germany

Based on 3,485 postings that disclose pay.

Median salarygross / year
€38,500
€30,000Typical range€54,000

Estimated from advertised pay across our sources — indicative gross annual figures, not an offer.

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Agent Runtime & Systems - Member of Technical Staff — Callosum | NewLuxJob