Senior Python Engineer (AI Startup) (449A84C)

Some engineers enjoy writing code. Others can't stop building. If you've been programming since you were a teenager, spend your evenings experimenting with new technology, and get genuine satisfaction from shipping products, this role was written for you. Referment is partnering with a venture-backed AI startup looking for one exceptional engineer to help build the next generation of AI-powered cybersecurity products. You'll work directly with the founders and own features from customer problem through to production. You'll enjoy this role if you... Love building more than talking about buildingPrefer shipping software over writing documentationCan move between backend, frontend and infrastructure without thinking twiceUse AI every day, but don't rely on it to think for youEnjoy solving messy customer problems instead of perfectly defined tickets What You'll Be Building Rather than owning a small corner of a huge codebase, you'll own products end-to-end You'll design backend systems.Ship React interfaces.Improve databases.Debug production.Deploy continuously.Help shape both the product and the engineering culture. What We're Looking For Strong commercial Python experienceSolid engineering fundamentals (testing, databases, production systems)React experience or willingness to work across the frontendComfortable using LLMs as development toolsStartup mentality with genuine product ownershipAround 2–6 years' experience Extra points for experience with: CybersecurityWorkflow orchestration (Prefect, Airflow)High-growth SaaSEarly-stage startups This probably isn't for you if... You need detailed specs before starting workYou only enjoy one part of the stackYou avoid production responsibilityYou're looking for a comfortable corporate engineering roleYou're currently splitting your attention with another startup Why join? Competitive salary Meaningful equityOne of the first engineering hiresDirect access to the foundersHuge ownership from day oneBuild products that customers actually use #Referment