Senior Software Test Engineer (Python & Embedded Systems)

Senior Software Test Engineer (Python & Embedded Systems)

Salary: Up to £75,000 per annum, depending on experience

Location: Predominantly remote, with occasional visits to Farnborough

Security Requirements: Sole UK National | Eligible for SC Clearance, with the ability to progress to DV Clearance

Are you looking for a better work-life balance without leaving the defence sector behind?

If you have experience on defence or national security programmes and want greater flexibility with less time spent on-site, this could be the opportunity you're looking for.

We're seeking a Senior Software Test Engineer with a strong background in embedded software and firmware testing to help ensure the quality, reliability and performance of complex device-based systems. This is a senior, hands-on position where you'll shape test strategy while remaining involved in automation, integration testing and fault investigation.

You'll work on challenging non-deterministic systems , designing robust test approaches where software behaviour can vary based on system state, environmental conditions and external inputs. You'll also take ownership of Python-based automation frameworks , driving quality standards and continuous improvement across the engineering team.

This is an excellent opportunity to join a highly skilled team, solve complex technical challenges and influence the testing approach for cutting-edge embedded systems within a secure defence environment.

What You'll Be Doing

Lead the testing strategy for complex embedded software and firmware products.

Design, develop and maintain Python-based automated test frameworks .

Create robust test approaches for non-deterministic systems , validating behaviour where outputs may vary based on environmental conditions, system state or external inputs.

Design test cases for complex and uncertain scenarios, ensuring system resilience under real-world operating conditions.

Perform software, firmware, integration and system-level testing across hardware and software environments.

Analyse intermittent, non-repeatable and unexpected behaviours to identify root causes.

Collaborate cl...