> Markdown version of [/jobs/ext/4533059-sdet-software-development-engineer-in-test](https://www.wearedevelopers.com/jobs/ext/4533059-sdet-software-development-engineer-in-test). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # SDET (Software Development Engineer in Test) - **Company:** The Source - **Location:** Oxford, UK - **Salary:** £60,000 - £65,000 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Agile Methodology, Software Applications, Automation of Tests, Software Quality, Code Review, Continuous Integration, DevOps, Release Management, Software Engineering, Software Quality Assurance (SQA), Software Testing Automation Framework, Strategies of Testing, TypeScript, System Availability, SDET, Legacy Systems - **Published:** November 3, 2026 - **Apply:** https://www.cv-library.co.uk/job/225792000/SDET-Software-Development-Engineer-in-Test ## About the Role * Experience as an SDET, Software Engineer in Test, or QA Automation Engineer * Strong software engineering mindset with a passion for quality and test automation * Experience working within Agile product development teams * Experience contributing to large-scale application modernisation or transformation programmes * Comfortable working with both modern and complex legacy systems * Strong understanding of software development lifecycles, testing strategies, and quality assurance best practices * Experience collaborating closely with developers, product managers, and engineering teams Technical Skills * Strong hands-on development experience with: + JavaScript + TypeScript * Automated testing design and implementation * CI/CD pipeline development and maintenance * Test automation frameworks and tooling * Code reviews and engineering best practices * Software quality assurance and testing methodologies * Release management and deployment processes * Experience building and testing scalable, production-grade software applications Nice to Have * Experience working on platform modernisation or re-architecture programmes * Experience within public sector, compliance, enforcement, or regulated technology environments * Experience testing customer-facing applications with high availability requirements * Knowledge of modern DevOps practices and engineering metrics * Strong understanding of quality engineering principles and continuous improvement practices * Experience helping define engineering and testing standards across teams ## Description * Lead testing activities within a cross-functional engineering team * Define and establish testing standards, approaches, and best practices * Design, build, and maintain automated test suites * Contribute directly to the application codebase alongside software engineers * Support CI/CD pipelines, release processes, and deployment activities * Participate in code reviews and quality assurance activities * Ensure high levels of software quality throughout the development lifecycle * Support the successful delivery of large-scale product transformation initiatives, * Lead testing activities within a cross-functional engineering team * Define and establish testing standards, approaches, and best practices * Design, build, and maintain automated test suites * Contribute directly to the application codebase alongside software engineers * Support CI/CD pipelines, release processes, and deployment activities * Participate in code reviews and quality assurance activities * Ensure high levels of software quality throughout the development lifecycle * Support the successful delivery of large-scale product transformation initiatives By applying for this role, you consent to SGI contacting you by telephone regarding recruitment services, market updates, and relevant business opportunities