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 platforms
Design, build, and maintain test automation scripts for UI, APIs, and services
Integrate testing tools into CI/CD pipelines and manage cloud-based testing solutions
Lead test data management, performance/load testing, and accessibility verification
Mentor 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 Robot
Proficient in API testing (REST/SOAP) and tools like Postman or JMeter
Experience with cloud-based test platforms such as BrowserStack, Sauce Labs, or Appium
Solid understanding of test lifecycle tools such as Jira, Jenkins, GitHub, SonarQube
Strong knowledge of HTML, JavaScript, CSS, ReST, JSON, and accessibility standards
Bonus Points For
Development background and coding experience in Java, Ruby, or Python
Load and performance testing experience using JMeter, LoadRunner, or Performance Center
Cloud platform exposure (AWS, Azure, OpenShift, PCF)
Experience with DevOps practices, Agile methodologies, and AAA accessibility standards
Experience migrating on-premise systems to cloud ecosystems
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
Top Skills
What We Do
Capco, a Wipro company, is a global management and technology consultancy specializing in driving transformation in the energy and financial services industries. Capco operates at the intersection of
business and technology by combining innovative thinking with unrivalled industry knowledge to fast-track digital initiatives for banking and payments, capital markets, wealth and asset management, insurance,
and the energy sector. Capco’s cutting edge ingenuity is brought to life through its award-winning Be Yourself At Work culture and diverse talent.
TRUSTED ADVISORS - Our collaborative and entrepreneurial approach position us as trusted long-term partners to our clients.
DEEP EXPERTISE - Clients look to us for clear guidance, proven expertise, and the support they need to set their companies up for success.
DISRUPTIVE SOLUTIONS- We do not provide off -the-shelf answers to clients’ challenges. Instead, we work in close collaboration to understand the issues, and craft disruptive, bespoke solutions.
ACCOUNTABILITY AND OWNERSHIP - We recognize every client has distinct needs and expectations, and we take ownership and accountability for the solutions we design, build, and deliver.
Why Work With Us
We support and encourage an inclusive culture, entrepreneurial outlook and independent thinking. Capco is not about organizational charts and rigid hierarchies – we want all employees to feel that Capco is their firm to own and run. We believe diversity powers innovation. Be Yourself At Work (#BYAW) is an integral and underlying part of our culture
Gallery
Capco Offices
Hybrid Workspace
Employees engage in a combination of remote and on-site work.
