MCS Group is working with a major innovator in sustainable technology and Greentech, who are looking for a Senior Software Tester to join their team on a 6-month contract basis. This is a hybrid role, requiring three days per week in their Belfast office. This Senior Software Tester will bring a blend of manual and automation testing experience, with solid Java, JavaScript and TypeScript skills. While the team is currently working with Playwright, they're happy to consider candidates with experience in Selenium, Cypress, or similar. This is a fantastic opportunity to join a highly collaborative and forward-thinking team, where your input will directly influence the direction of testing strategy, tooling, and quality assurance processes. The Role: Design, build and maintain robust test automation frameworks across both front-end and back-end systems Carry out a mix of manual and automated testing across UI and APIs Write and execute SQL queries for back-end validation Work closely with developers to identify bugs and implement effective solutions Maintain and enhance CI/CD pipelines and contribute to release processes Participate in peer reviews and uphold best practices in software testing Take ownership of test coverage and ensure the overall quality of the software product Bring a forward-thinking approach, particularly around incorporating AI into testing frameworks The Person Proven experience in manual and automated testing across web and back-end applications Strong programming skills in Java, JavaScript and Typescript Solid experience with UI testing (e.g. Playwright, Selenium, Cypress) Experience in API testing SQL proficiency - essential for database query and validation Experience working in Agile teams and proficiency with Jira Comfortable working independently and taking initiative, with good communication and problem-solving skills. Duration : 6 Months IR35 : Inside Location : Belfast (Hybrid - 3 days per week on-site) Day Rate : Competitive Start Date : ASAP To speak in absolute confidence about this opportunity, please send an up to date CV via the link provided or contact Jill Johnston, Head of IT Contracts, at MCS Group Even if this position is not right for you, we may have others that are. Please visit MCS Group to view a wide selection of our current and exclusive roles All conversations will be treated in the strictest of confidence. Skills: QA Engineer SDET test engineer Quality Assurance Automation Automated QA