Principal Test Engineer (Python / Squish)

Salary: £130,000 - 130,000 per year

Requirements

• Extensive commercial experience in automated test design and development using Python and Squish.
• Proven ability to lead test teams and drive high-quality test delivery.
• Excellent communication skills, with experience working alongside software developers and external stakeholders.
• Applicants must have the unrestricted right to work in the UK.
• 11+ years commercial experience in software test design, execution, and technical leadership.
• Expert experience developing automated test scripts, preferably using Python and Squish.
• Proven experience leading test teams and delivering commercially developed test solutions.
• Strong understanding of Agile/SAFe methodologies, CI/CD, secure software development, and software engineering best practices.
• Experience with Python (preferred).
• Experience in test design, automation, and execution (preferred).

Responsibilities

• Lead the design, development, and execution of automated test solutions using Python, Squish, and other appropriate test technologies.
• Provide technical leadership by mentoring test engineers, leading estimation workshops, and driving coding standards and testing best practices.
• Collaborate with software engineers, Product Managers, and external stakeholders to support backlog delivery within an Agile/SAFe environment.
• Support secure software development, CI/CD integration, knowledge transfer, and the delivery of high-quality software.

Technologies

• CI/CD
• Embedded
• Support
• Linux
• Python
• AI
• Android
• Cloud
• IoT
• OpenGL
• Qt

More

We are Puma Berry Ltd and we are seeking an experienced L4 Principal-Level Software Test Engineer to join a long-term programme developing advanced software on Embedded Linux platforms. This is a 12+ month Outside IR35 contract with the potential for extension. We offer a hybrid remote working arrangement from Fareham, PO14 4BG, along with work from home benefits. You will provide technical leadership while remaining hands-on with test automation, mentoring, and quality delivery within an Agile/SAFe environment. We are looking for someone with a proven track record of leading test teams, delivering high-quality automated test solutions, and working closely with software engineers and stakeholders.

last updated 26 week of 2026