Founding Head of Public Sector

Descripción del puesto

Job title: Founding Head of Public Sector Location: London; 4 days in-office, 1 day wfh Reports to: Chief Commercial Officer ___________________________________________________________________________ Cosine at a glance Cosine is the UK's frontier AI lab for autonomous software engineering — not another coding assistant, but our own models, agent stack, eval harnesses, and product layer. We build our agent tooling entirely in-house and post-train open-source models to deliver reliable, enterprise-grade coding performance in security-critical settings. Our offerings can be used as SaaS, deployed on VPC, on-prem or fully air-gapped. Through this flexability, we are able to service large-scale, highly regulated enterprises and industries including defence, financial service and healthcare. We’re backed by YC and were recently selected for the UK’s sovereign AI programme. The company is at a rare stage: deep technical work, real enterprise pull, and a chance to shape how AI is deployed inside defence, banking, government, and other high-trust environments. ___________________________________________________________________________ Mission Own Cosine’s public sector engagement and GTM motion from founder-led relationship building into a repeatable commercial engine. The role exists to build on Cosine’s growing reputation across government, defence-adjacent bodies, public sector technology teams, and the wider UK sovereign AI ecosystem, turning senior interest into deep institutional relationships, clearly understood priorities, and qualified commercial opportunities. This is a critical sector-building role: part enterprise sales, part partnerships, part market development, part public sector navigation, and part GTM leadership. ___________________________________________________________________________ Core responsibilities 1. Lead engagement with public sector organisations and priority accounts Own Cosine’s day-to-day engagement with priority public sector organisation