Senior Software Development Engineer in Test (SDET)

Senior Software Development Engineer in Test (SDET)

Location: London (Hybrid) | Type: Permanent

Capco is growing our Engineering team – and we’re looking for experienced SDET's with a passion for delivering innovative solutions in financial services. If you enjoy solving complex problems, working with cloud-native technologies, and collaborating in agile teams, we’d love to hear from you.

As a Senior Software Development Engineer in Test (SDET) at Capco, you’ll contribute to high-impact, client-facing projects that shape the future of financial services. You’ll work alongside talented engineers, have access to industry-leading training, and get the opportunity to grow your skills across multiple platforms. You will also get the chance to work across different domains within FS & Energy.

• Create, Drive and Build test strategies that are robust, reusable and scalable
• Be responsible for creating detailed test artefacts such as test plans, test specifications, automated tests, defect tickets and reports
• Manage test environments, test devices, defining and creating consistent test data and reports
• Work with both your team and other cross functional teams to plan and execute tests using the latest test automation technologies, processes and tools to deliver frequently, safely and efficiently for millions of banking & financial customers
• Coach, mentor and up-skill other automation engineers
• Have the ability to communicate complex ideas to non-experts with eloquence and confidence

• Deep knowledge of at least one OOP language - Preference for Java, Scala or Javascript
• Experience building test automation frameworks from scratch experience using tools such as; WebDriver, Selenium, Cypress, Playwright etc
• Experience across different test layers with a heavy preference for having exposure to both API, as well as UI layer automation
• Experience of test and issue management tools e.g. Jira, RTC, TestRail and Quality Centre
• Good understanding of public cloud, infrastructure and CI/CD - tools such as Jenkins, Git, GitHub, Stash, SonarQube, Performance centre

• Background as a developer preferred
• Load and Performance Testing experience – Load Runner, Performance Centre and JMeter or similar tools
• DevOps processes and Public Cloud experience using AWS, GCP or Azure
• Experience migrating on-premise solutions to a cloud ecosystem.
• Agile methodologies – Scrum, Kanban, Lean UX, X

You’ll be part of a team where your voice matters. We’re collaborative, non-hierarchical, and laser-focused on creating impact – for our clients and for you. At Capco, you’ll shape your career around your strengths, enjoy flexibility and trust, and work with people who genuinely care about your growth and wellbeing.

• 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:  Minimum 40 Hours of Training Annually: Take your pick—workshops, certifications, e-learning—your growth, your way. 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.

We’re committed to a barrier-free, inclusive recruitment process. If you need any adjustments at any stage, just let us know – we’ll be happy to help. We welcome applicants from all backgrounds. At Capco, we value the difference you make, and the differences that make you. Our #BeYourselfAtWork culture champions diversity, equity and inclusivity, and we bring a collaborative mindset to our partnerships with clients and colleagues. #BeYourselfAtWork is the cornerstone of our success and a value that our employees live and breathe every day.