Python Developer — Secure, Mission‑Critical SystemsDefence & Security | Remote | Contract | Outside IR35Build software that’s actually used — and actually matters.We’re looking for a Python Developer to work on secure, mission‑critical systems used across Defence & Security programmes. This is real production software, not prototypes or proof‑of‑concepts — built with care, discipline, and purpose.What you’ll doBuild clean, reliable Python services in a secure environmentWrite well‑tested, maintainable code (pytest, CI/CD)Work from clear requirements and sound architectureCollaborate with experienced Senior and Lead EngineersShip software that supports real‑world operationsTech & environmentPython / pytestAutomated testing & CI/CD pipelinesModern service‑based architectures and APIsCalm, professional engineering cultureWhat we’re looking forSolid experience building production softwareStrong Python fundamentals and good engineering habitsA quality‑first mindsetEligibility for UK Security Clearance (SC)Why this roleMeaningful, high‑integrity workStrong technical leadershipModern engineering standards — no cowboy codingHybrid working, Bristol basedOutside IR35 contractIf you’re a Python Developer who cares about doing things properly, this is a project worth your time.