AI Benchmark Engineer: Reproducible Evaluation System

Company: Callosum
Apply for the AI Benchmark Engineer: Reproducible Evaluation System
Location: London
Job Description:

Callosum, based in London, is building the benchmarking system for evaluating agentic and algorithmic AI across tasks. You will design and implement a unified evaluation pipeline and ensure reproducible results that inform product decisions.

This role requires a PhD or strong research track record, excellent Python, and hands-on experience with sandboxed and distributed execution. London-based, in-person work with visa sponsorship possible.

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Posted: October 21st, 2026