Senior Software Development Engineer in Test (SDET) at Capco · London

Senior Software Development Engineer in Test (SDET) Location: London (Hybrid) | Practice Area: Technology & Engineering | Type: Permanent Advance your testing career while shaping digital finance with automation The Role Capco is growing our Engineering team and we’re looking for experienced SDETs 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. What You’ll Do Create, drive, and build test strategies that are robust, reusable, and scalable Develop and manage test artefacts - plans, specifications, scripts, and reports Manage test environments and generate consistent test data Execute UI and API tests using modern automation tools and practices Collaborate with engineers and cross-functional teams to ensure quality-first delivery What We’re Looking For Strong knowledge of at least one OOP language (Java, Scala, or JavaScript preferred) Experience building test automation frameworks from scratch (e.g., Selenium, Cypress, Playwright) Exposure to UI and API automation layers Familiarity with Jira, TestRail, Jenkins, GitHub, and SonarQube Understanding of CI/CD pipelines and cloud infrastructure Bonus Points For Background as a developer Performance testing with JMeter, LoadRunner, or equivalent tools DevOps knowledge and public cloud experience (AWS, Azure, or GCP) Experience migrating applications to cloud environments Agile practices such as Scrum, Kanban, or Lean UX Why Join Capco Deliver high-impact technology solutions for Tier 1 financial institutions Work in a collaborative, flat, and entrepreneurial consulting culture Access continuous learning, training, and industry certifications Be part of a team shaping the future of digital financial services Help 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. #LI-DNI