Principal Software Development Engineer in Test (SDET)
Full description
Principal Software Developer in Test (SDET)
Location: London (Hybrid) | Practice Area: Technology & Engineering | Type: Permanent
Drive test automation innovation and engineering excellence in financial technology
The Role
As a Principal SDET at Capco, you'll lead the strategy, architecture, and implementation of robust automation testing frameworks across financial services projects. You’ll work closely with cross-functional teams to deliver quality-first solutions using the latest tools and practices. You’ll also mentor engineers, foster best practices in test automation, and help shape our quality engineering capability.
What You’ll Do
Architect reusable, scalable test strategies and frameworks across web and mobile platformsDesign, build, and maintain test automation scripts for UI, APIs, and servicesIntegrate testing tools into CI/CD pipelines and manage cloud-based testing solutionsLead test data management, performance/load testing, and accessibility verificationMentor junior engineers and influence organisation-wide testing strategy and tooling
What We’re Looking For
Strong experience in UI and mobile test automation using Selenium, WebDriver, Cucumber, or RobotProficient in API testing (REST/SOAP) and tools like Postman or JMeterExperience with cloud-based test platforms such as BrowserStack, Sauce Labs, or AppiumSolid understanding of test lifecycle tools such as Jira, Jenkins, GitHub, SonarQubeStrong knowledge of HTML, JavaScript, CSS, ReST, JSON, and accessibility standards
Bonus Points For
Development background and coding experience in Java, Ruby, or PythonLoad and performance testing experience using JMeter, LoadRunner, or Performance CenterCloud platform exposure (AWS, Azure, OpenShift, PCF)Experience with DevOps practices, Agile methodologies, and AAA accessibility standardsExperience migrating on-premise systems to cloud ecosystems
Why Join Capco
Deliver high-impact technology solutions for Tier 1 financial institutionsWork in a collaborative, flat, and entrepreneurial consulting cultureAccess continuous learning, training, and industry certificationsBe part of a team shaping the future of digital financial servicesHelp shape the future of digital transformation across FS & Energy.
Benefits
We offer a competitive, people-first benefits package designed to support every aspect of your life:
Core Benefits: Discretionary bonus, competitive pension, health insurance, life insurance and critical illness cover. Mental Health: Easy access to CareFirst, Unmind, Aviva consultations, and in-house first aiders. Family-Friendly: Maternity, adoption, shared parental leave, plus paid leave for sickness, pregnancy loss, fertility treatment, menopause, and bereavement. Family Care: 8 complimentary backup care sessions for emergency childcare or elder care.Holiday Flexibility: 5 weeks of annual leave with the option to buy or sell holiday days based on your needs. Continuous Learning: Your growth, your way - minimum 40 hours of training annually. Take your pick; workshops, certifications, e-learning. Also, Business Coach assigned from Day One: Get one-on-one guidance to fast-track your goals and accelerate your development. Healthcare Access: Convenient online GP services. Extra Perks: Gympass(Wellhub), travel insurance, Tastecard, season ticket loans, Cycle to Work, and dental insurance.
Inclusion at Capco
We’re committed to making our recruitment process accessible and straightforward for everyone. If you need any adjustments at any stage, just let us know – we’ll be happy to help. We value each person’s unique perspective and contribution. At Capco, we believe that being yourself is your greatest strength. Our #BeYourselfAtWork culture encourages individuality and collaboration – a mindset that shapes how we work with clients and each other every day.
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