Salary: £29,000 - 58,000 per year Requirements: Hands-on automation experience using Java, Selenium, Rest Assured, API, contract, and integration testing Experience working with monolith and microservices systems Knowledge of CI/CD pipelines, Spring Boot-based applications, and performance testing fundamentals Understanding of contract testing, API testing, and asynchronous messaging (e.g. Kafka) Familiarity with non-functional testing (performance, accessibility) Experience with non-relational databases (e.g. MongoDB) Automation-first mindset with the ability to build reusable, maintainable frameworks Responsibilities: Define and implement an end-to-end test strategy aligned to microservices architecture Establish standards, patterns, and best practices across multiple teams Assess current testing approaches and drive continuous improvement Embed testing strategy across teams, creating scalable frameworks and exemplars Design, build, and maintain automated test frameworks Work across different test levels: unit, integration, contract, system, and E2E Lead automation efforts in Java-based environments Support teams with implementation, not just direction Partner with engineering teams and stakeholders to ensure alignment Provide technical leadership and coaching to testers and developers Ensure testing practices are consistently applied across teams Technologies: API CI/CD E2E Support Java Kafka Marketing MongoDB REST Selenium Spring Spring Boot microservices More: At Certain Advantage, we are committed to finding the best talent for our clients. We are currently on the lookout for a highly skilled Lead Test Engineer to join our team and contribute to a major digital transformation programme. This role offers the opportunity to make a significant impact while collaborating with various delivery teams in a supportive environment. We operate across the UK, specializing in connecting talented individuals in Finance, Marketing, IT, and Engineering with rewarding career opportunities. last updated 24 week of 2026