Senior Software Development Engineer in Test (SDET)

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 Fle