# Full-stack Software Engineer (Product) — Apollo Research > Source: > Published: 2026-08-28 08:40:40+00:00 # Full-stack Software Engineer (Product) - Salary - Not published - Location - London & San Francisco - Work type - On-site - Posted - today [Apply on company site (opens in new tab)](https://jobs.lever.co/apolloresearch/ab3051f4-d5be-4b46-9f54-eb14da1a6a54/apply) THE OPPORTUNITY We are building Watcher, a coding agent security product. Watcher is deployed in production and monitors billions of agent tokens per month across engineering teams at agent-building scale-ups and enterprises. We are looking for a product engineer to build and scale Watcher end to end. This role includes backend and frontend components. You will own features across the full stack, from agent hooks and ingestion pipelines to monitoring dashboards and enterprise integrations. You can expect to own features from customer conversation to production deployment. This is truly a “start-up role”: you will own big chunks of the product, make decisions fast, and ship at high volume. You will join a small team with significant ability to shape the product and tech, and you can earn more responsibility quickly. This is an individual contributor role but could lead to management responsibilities eventually, if desired.