Build the future of sovereign AI
Join the team that is leading the way in building technology that helps teams make better decisions without compromising on privacy or control.
Why work at Cosine
Build the future of AI
Work on autonomous software engineering systems that go beyond chat and autocomplete. Help build AI agents that can plan, reason, write, test, and ship code inside real development workflows.
Own the full stack
Shape the models, agent infrastructure, evaluation harnesses, product surfaces, and deployment systems that make Cosine work. We build deeply in-house, so your work directly influences what the product can become.
Ship technology that matters
Build AI that serious teams can rely on in secure, high-trust environments. Your work will help defence, finance, government, healthcare, and enterprise teams use AI where reliability, privacy, and control matter most.
Benefits and ways of working
We want Cosine to be a place where ambitious people can do the best work of their careers without relying on excessive hours or performative overwork.
Our compensation, benefits, and working practices are designed to reward contribution fairly, support wellbeing, and align the team with Cosine’s long-term success.
How we work at Cosine
Be customer-obsessed
Our customers work in environments where reliability, privacy, and control matter. We take their problems seriously, understand their world deeply, and build technology that earns trust through performance.
Stay curious
Cosine sits at the intersection of models, agents, infrastructure, product, and enterprise deployment. We stay curious across all of it, because the best ideas often come from people who understand more than their own lane.
Do the hard thing
The future of AI engineering will not be built by taking the easy path. We choose the work that matters, stay with difficult problems, and take responsibility for building systems that can stand up to real-world use.
Own it
High-agency people build Cosine. We take responsibility for outcomes, communicate clearly, and turn ambiguity into forward motion.
Be customer-obsessed
Our customers work in environments where reliability, privacy, and control matter. We take their problems seriously, understand their world deeply, and build technology that earns trust through performance.
Voice it clearly
Cosine sits at the intersection of models, agents, infrastructure, product, and enterprise deployment. We stay curious across all of it, because the best ideas often come from people who understand more than their own lane.
Open roles
Product & Engineering
GTM
Founding Head of Public Sector
London OfficeCosine 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.
Founding Head of Telco
London OfficeCosine 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.
Founding Head of Financial Services
London OfficeCosine 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.