Software Development Engineer in Test (SDET)
Location: London
Salary: £50,000 to £92,000
Clearance: Must hold eDV clearance
To Apply: Email
Join a team building technology that helps keep the UK secure, resilient, and prepared for the future. Working on complex digital systems across defence and national security, you'll help deliver high-quality software that underpins critical services and mission-critical platforms.
As a Software Development Engineer in Test (SDET), you'll apply engineering principles to quality assurance by designing scalable automation frameworks, developing robust test solutions, and enabling teams to deliver software with confidence. This is an opportunity to work on technically challenging programmes where quality is fundamental to success.
The Opportunity
Our client is looking for engineers who enjoy writing code as much as they enjoy finding defects. As an SDET, you'll work closely with software engineers, DevOps specialists, architects, and business stakeholders to embed quality throughout the software development lifecycle.
You'll have the opportunity to influence technical decisions, introduce modern testing approaches, and help shape engineering best practices across large-scale delivery programmes.
Typical responsibilities include: