Company: Dex
Location: London
Job Description:
Dex is partnering with Frontier labs to recruit a Member of Technical Staff in London or Paris. You will own ambiguous research-engineering problems across data curation, model fine-tuning, and agent execution harnesses, applying SFT and RL and turning prototypes into hardened systems.
You will design training-data pipelines, fine-tune/post-train models, develop agent harnesses, and collaborate with software and curriculum teams to translate open-ended questions into production-ready solutions.
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Posted: October 11th, 2026