Job title: Technical GTM Lead

Location: London; full in-office working as default

Start date: ASAP

Reports to: CRO

Compensation: Salary and Equity options available for discussion

Application deadline: 01/11/26 at 23:59 UK time

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Help put frontier AI to work in the real world

Cosine is a UK AI lab building models, applications and training infrastructure for mission-critical organisations.

We build coding agents that work across real software systems, specialised Lumen models, AI-native security products and the infrastructure needed to deploy advanced AI in demanding environments. Our customers include some of the world’s largest enterprises, including organisations operating behind strict security, regulatory and technical constraints.

We’re also training Lumen Sovereign, the first frontier large language model trained in the UK, with the support of the UK Government.

We’re