Software Developer in Test SDET

Position: Software Developer in Test (SDET) - Centre of Excellence

Location: London, United Kingdom (Hybrid - Minimum 2 days onsite per week)?? Start Date: Immediate? Engagement Type: Contract (with potential for permanent employment) Industry: Financial Services / Technology Consulting

Role Overview

We are seeking a highly skilled and automation-focused Software Developer in Test (SDET) to join a newly established Centre of Excellence (CoE). This strategic team is responsible for delivering secure, scalable, and production-grade digital solutions while defining and upholding engineering standards across multiple client engagements.

The ideal candidate will have strong experience in test automation using Java, a deep understanding of modern testing frameworks and practices, and a proven track record of working within or helping to establish a Centre of Excellence in a financial services or banking environment.

Key Responsibilities
  • Design, develop, and maintain robust automated test frameworks and test suites using Java.
  • Collaborate with developers, DevOps, and QA teams to ensure high-quality, testable code and continuous delivery.
  • Define and implement test strategies for functional, integration, regression, and performance testing.
  • Contribute to the development of reusable testing assets and frameworks within the CoE.
  • Ensure test coverage across APIs, UI, and backend systems in complex enterprise environments.
  • Participate in code reviews, architecture discussions, and sprint planning sessions.
  • Advocate for test automation, quality engineering, and shift-left testing practices.
  • Support the evolution of CoE testing standards and best practices across engagements.
Required Skills and Experience
  • Proven experience in test automation using Java in enterprise-grade applications.
  • Strong knowledge of testing frameworks and tools such as JUnit, TestNG, Selenium, Cucumber, RestAssured, or similar.
  • Experience testing RESTful APIs, microservices, and web-based applications.
  • Familiarity with CI/CD pipelines and integration of automated tests into DevOps workflows.
  • Prior experience working in regulated environments such as banking, fintech, or insurance.
  • Demonstrated experience contributing to or establishing a Centre of Excellence in a financial services context.
  • Strong understanding of Agile methodologies and quality engineering principles.
  • Excellent communication and collaboration skills across multidisciplinary teams.
Desirable Attributes
  • Experience with performance and load testing tools (e.g., JMeter, Gatling).
  • Familiarity with containerized environments (e.g., Docker, Kubernetes).
  • Exposure to test data management and service virtualization.
  • Prior consulting experience or experience in client-facing roles.
Engagement Model
  • Initial contract engagement with a clear pathway to permanent employment.
  • Hybrid working model: minimum two days onsite in London, with flexibility to travel to other UK client sites as required.
  • This role forms part of a long-term strategic capability within a joint consulting and technology delivery partnership.
  • The position is designed as a reusable, high-impact engineering asset and is not intended to be absorbed by the client.
What We Offer
  • A high-impact role within a purpose-built Centre of Excellence.
  • Opportunities to work on complex, high-value projects in the financial services sector.
  • A collaborative, delivery-focused culture alongside top-tier engineering talent.
  • Long-term career development within a respected and expanding consulting capability.

To express interest or learn more, please apply directly or reach out for a confidential conversation.

Company
Become
Location
London, South East, England, United Kingdom
Hybrid / WFH Options
Employment Type
Contractor
Salary
£500 - £550 per day
Posted
Company
Become
Location
London, South East, England, United Kingdom
Hybrid / WFH Options
Employment Type
Contractor
Salary
£500 - £550 per day
Posted