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To apply, send your CV to [email protected] with the job title of the role you are applying for in the subject line.

Include in the email text a short note summarising a deal you sourced and closed.

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Job title: Founding Enterprise Account Executive

Location: London

Start date: ASAP

Reports to: CRO

Compensation: £75k–£125k base plus commission and equity

Cosine at a glance

• Cosine is an autonomous, on-premise coding agent post-trained on human reasoning data to deliver unmatched software-engineering accuracy, security, and speed for regulated enterprises
• What makes us unique is our in-house ML research lab that post-trains LLMs (e.g. GPT-5, gpt-oss, Kimi) on proprietary software-engineering reasoning data to dramatically increase their coding accuracy. In 2024 this gave us a world-leading score of 72% on OpenAI’s SWE-Lancer benchmark
• Cosine is now the only available managed product that can be fully air-gapped and deployed on premises, exciting many bulge bracket but extremely risk sensitive and strict enterprises that have rejected all other solutions on the market. We've got our first pilots up and running with global investment banks and defence primes and are now looking to scale our GTM function

The role

You’ll source, own and close our earliest enterprise deals end-to-end and help write the sales playbook that every future AE will use. If you love engaging with the largest global enterprises, managing complex sales cycles and turning first pilots into multi-year partnerships, this is for you.

Your responsibilities:

• Own the full sales cycle from sourcing to close: outbound, discovery, multi-threading, demos, business case, commercials, and procurement
• Design pilots: define success criteria, milestones, and exit to production
• Build the deal strategy: help build mutual success plans, drive executive alignment, articulate competitive positioning