We design and deploy world-leading RF spectrum-monitoring and intelligence systems that protect critical infrastructure and national-security missions worldwide. Solid test automation is mission-critical—your work will turn flaky manual steps into fast, reliable pipelines that let our teams ship with confidence.

What you’ll d0

Develop and maintain functional, regression, performance and stress suites (Python / PyTest / Robot, plus C++/C# or JavaScript where useful).
Embed those suites in our CI/CD pipelines (GitLab CI, Jenkins, Azure DevOps) so every green build earns its badge automatically.
Build out and maintain hardware-in-the-loop rigs that blend RF sensors, embedded boards and network gear; keep the lab humming 24 / 7.
Drive root-cause analysis with developers—dig into logs, scopes, packet captures—until the defect is squashed and verified.
Track and present quality metrics (coverage, escape rate, MTTR) to guide data-driven improvements.
Champion a shift-left culture, mentoring engineers on unit-test hygiene and design-for-test.
Contribute to our ISO-aligned Quality Management System and support defence-sector audits.

About you

Degree (or equivalent know-how) in Computer Science, Electronics, Software Engineering or similar.
3 + years building automated tests for complex tech—embedded, networking, IoT or adjacent.
Fluent in Python plus a mainstream framework (PyTest, Robot, Behave, etc.).
Comfortable in Linux & Windows; you can script in Bash or PowerShell without googling every flag.
Proven experience wiring tests into CI/CD and Git workflows.
Working knowledge of network protocols (TCP/UDP, REST, gRPC) and packet-sniffing or API-test tools.
Clear communicator who enjoys debugging with multidisciplinary teams.

Bonus points for: RF/SIGINT know-how, Selenium or Playwright for UI tests, exposure to C++/C#/Rust/Go, Docker/K8s, cloud-native testing (AWS/Azure), or safety/security standards (DO-178, IEC 61508, ISO 26262).

What’s in it for you

Hybrid flexibility – 2–3 days per week in our Cambridge R&D labs, the rest wherever you work best.
25 days’ holiday (plus public holidays) with buy/sell options.
Private medical, matched pension, life assurance and income protection—because peace of mind matters.
Annual training budget and time off for conferences or certifications.
Friendly, mission-driven culture where your automation code keeps real-world systems reliable and secure.

CRFS

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