Senior QA Tester – Performance/Load London (2x per week onsite) SC Cleared £450-£475pd (Outside IR35) Are you an experienced Senior QA Tester with a passion for performance and load testing? Ready to play a key role in delivering high-impact, secure digital solutions? We’re looking for a SC Cleared Senior QA Tester (Performance/Load) to join a dynamic team working on mission-critical systems. The Role As a Senior QA Tester, you’ll: Lead performance and load testing strategies Design, develop, and execute automated performance test scripts Analyse system behaviour under stress and identify bottlenecks Collaborate with developers and DevOps teams to optimise system performance Provide clear reporting and actionable insights to stakeholders What We’re Looking For Proven experience in performance and load testing Strong knowledge of tools such as JMeter, LoadRunner, or similar Experience working within secure/government environments Active SC Clearance (essential) Ability to work onsite in London 2 days per week Government experience is essential