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Talent Locker • London, England, United Kingdom
Role & seniority: Principal Test Engineer – Automation Excellence (senior/lead level)
Stack/tools: C#, Java; Selenium-based automation frameworks; API automation (design, data, validation)
Lead automation across multiple teams and platforms
Design, own and scale Selenium-based frameworks; drive test strategy and modern engineering standards
Mentor automation engineers and influence senior stakeholders on quality direction
Strong hands-on automation experience
Deep expertise in C#, Java, and Selenium framework engineering
Strong API automation capability (design, data, validation)
Proven track record mentoring and setting technical direction
Ability to operate effectively in fast-paced, multi-team environments
Experience leading automation programs across multiple teams
Wider test automation beyond Selenium; integration with CI/CD pipelines
Demonstrated ability to influence senior stakeholders and drive quality initiatives
Location & work type: London or the South; Hybrid (2 days per week in office)
Principal Test Engineer – Automation Excellence London or the South (Hybrid – 2 days per week) £65-80k + Private Medical + Bonus + excellent Benefits
This is a business with a strong reputation for investing in its people, promoting from within and backing engineering properly. Automation is taken seriously here – with real ownership, influence and progression available for those who can raise the bar technically.
This is not a coordination role. It is hands-on, high-impact test engineering at scale. The successful candidate will bring strong automation experience, with deep, proven expertise in C#, Java and Selenium. This role requires someone who has designed, built and evolved robust, maintainable automation frameworks from the ground up, with a strong focus on Selenium-based solutions.
You will lead testing across multiple teams, define strategy, champion modern engineering standards and mentor automation engineers, while remaining technically hands-on. Strong API automation experience, framework design capability and the ability to influence senior stakeholders are essential.
Alongside complex technical challenge, there is clear progression, structured support, meaningful technical influence and a culture that genuinely develops its engineers.
What you’ll be doing Leading automation across multiple teams and platforms Designing and owning scalable Selenium-based frameworks Driving test strategy and modern engineering standards Mentoring engineers and raising automation capability Influencing senior stakeholders on quality direction
Experience required Strong hands-on automation experience Deep expertise in C#, Java & Selenium framework engineering Strong API automation capability (design, data, validation) Proven experience mentoring and setting technical direction Confidence operating in fast-paced, multi-team environments
If you want to be the technical authority in automation and accelerate your career while doing it, this is the move.