Software Development Engineer in Test (SDET)

Salary: £40,000 - 50,000 per year

Requirements

• We have 3+ years of experience in a Software Testing, QA Automation, or SDET role.
• We have strong C# development skills and experience designing, building, and maintaining automated test frameworks using C# and modern testing practices.
• We have strong hands-on experience developing or testing applications in Unity, including the Unity Test Framework, Play Mode testing, and Edit Mode testing.
• We can build custom test tooling or simulation and harness solutions from scratch, especially where standard simulators or test doubles do not reflect real-world behaviour.
• We have knowledge of Unity performance and memory profiling.
• We have experience using Jira, Azure DevOps, or similar test management tools.
• We have experience performing structured manual testing.
• We have a strong understanding of software testing principles and Agile development practices.
• We have experience using Git and modern development workflows.
• We have strong cross-functional communication skills and can translate between engineering implementation detail and QA/testing needs.
• We are comfortable engaging in design discussions and backlog refinement/story writing, and we can spot and articulate quality or testability risks early.
• We have a proactive mindset focused on quality, with strong analytical, troubleshooting, and problem-solving skills.
• We have excellent communication and stakeholder collaboration skills.
• Experience testing AR, VR, or mixed reality applications is desirable.
• Practical experience using AI tools to improve QA or engineering workflows is desirable.
• Experience testing outside the game engine layer, such as API, backend, or data integrity testing against services such as a CMS, is desirable.
• Experience with Azure DevOps, GitHub Actions, Jenkins, or similar CI/CD tools is desirable.
• Experience working within regulated environments, such as healthcare, is desirable.

Responsibilities

• We design, develop, and maintain automated test frameworks for Unity applications.
• We create and execute Play Mode and Edit Mode tests using the Unity Test Framework and develop extensions where necessary.
• We build bespoke test tooling and harnesses for scenarios where Unitys built-in simulation capabilities are unreliable or give false confidence.
• We extend automated testing beyond the Unity client itself, including data integrity and integration testing for connected systems such as our CMS, cloud-hosted services, and APIs.
• We develop automated functional, integration, regression, and end-to-end tests.
• We monitor and validate application performance, memory usage, and stability across supported devices.
• We integrate automated testing into CI/CD pipelines.
• We analyse test results and investigate failures.
• We proactively look for ways to make manual testing faster and more reliable using capture, instrumentation, and AI-assisted tooling.
• We execute test cases where automation is not yet built out or suited to automation, such as real-device spatial and AR interactions.
• We validate application functionality, user workflows, UI behaviour, and overall user experience.
• We reproduce, document, and verify defects.
• We support release validation and user acceptance testing activities.
• We act as a technical bridge between Unity developers and the QA function.
• We champion QA involvement upstream in the design process.
• We help shape user stories and acceptance criteria so QA-relevant information is present early.
• We review requirements and acceptance criteria to ensure they are testable and complete.
• We participate in Agile ceremonies including sprint planning, reviews, and retrospectives.
• We contribute to test plans, quality standards, and testing best practices.
• We continuously improve automation coverage, testing processes, and quality reporting.
• We actively champion the adoption of AI tooling within QA and testing workflows.

Technologies

• AI
• API
• Azure
• Backend
• C#
• CI/CD
• Cloud
• CMS
• DevOps
• Git
• GitHub
• Support
• JIRA
• Jenkins
• Unity
• VR
• UX UI Design
• GameDev
• XR

More

We are Strolll, a company transforming rehabilitation and physical therapy with a state-of-the-art software platform for augmented reality glasses, focused on people living with neurological disorders such as Parkinsons disease, stroke, and MS. Our core purpose is to give people a new reality that inspires belief in limitless human potential to overcome difficult rehabilitation challenges. We are working toward becoming the most used rehabilitation software in the world, with a key result of 7 million weekly rehab minutes by NYE 2029. This role is remote in the United Kingdom and reports to the Principal QA Engineer. The pay range is £40,000 to £50,000 per year.

last updated 28 week of 2026