Python Developer — Secure, Mission‑Critical Systems
Defence & Security | Contract | Outside IR35
Build 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 do
* Build clean, reliable Python services in a secure environment
* Write well‑tested, maintainable code (pytest, CI/CD)
* Work from clear requirements and sound architecture
* Collaborate with experienced Senior and Lead Engineers
* Ship software that supports real‑world operations
Tech & environment
* Python / pytest
* Automated testing & CI/CD pipelines
* Modern service‑based architectures and APIs
* Calm, professional engineering culture
What we’re looking for
* Solid experience building production software
* Strong Python fundamentals and good engineering habits
* A quality‑first mindset
* Eligibility for UK Security Clearance (SC)
Why this role
* Meaningful, high‑integrity work
* Strong technical leadership
* Modern engineering standards — no cowboy coding
* Outside IR35 contract
If you’re a Python Developer who cares about doing things properly, this is a project worth your time.