Engineering Jobs at Cosine
Cosine has one open engineering role, in London, paying GBP 100k to 120k a year, alongside 2 other open roles.
About Cosine
Cosine trains AI models and specialised coding agents for organisations that need frontier capability within secure environments. The company develops Lumen, an AI model focused on writing code, and offers solutions for sovereign AI, air-gapped environments, cybersecurity, and niche languages.
The open role
- Forward Deployed Product Engineer: London, GBP 100k to 120k, posted 14 May 2026.
Also hiring at Cosine
Cosine is also hiring in finance and legal (1) and sales and business development (1).
Its roles are in London, UK (3).
What engineering work involves at an early-stage startup
You own whole parts of the product rather than one service inside a large system. Expect to write the code, deploy it, and get paged when it breaks. Reviews are quick and the codebase is small, so a decision made on Tuesday can ship on Thursday.
Questions people ask
Where is the engineering job at Cosine?
London.
How much does it pay?
GBP 100k to 120k a year, as stated in the posting.
What else is Cosine hiring for?
Finance and legal and sales and business development: 2 more roles.