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Job description As a practitioner level Senior Performance Test Engineer, you will: Design, implement, and execute performance testing strategies that align with business and user requirements, contributing to the overall test and quality planning efforts. Take ownership of performance testing within the automated pipeline, primarily using JMeter integrated with our CI/CD process (Concourse). Collaborate with teams across Companies House to champion a performance-first mindset throughout the development lifecycle. Analyse system performance, using tools such as Grafana, identify bottlenecks, and work closely with business analysts, developers, architects, and DevOps engineers to optimise performance. Establish and maintain performance baselines, stress testing, load testing, and scalability testing frameworks. Drive best practices and mentor other testers in performance testing techniques and tools. Research, recommend, and implement emerging tools to improve the efficiency and accuracy of performance testing. Document, and maintain performance testing standards, best practices, methodologies, runbooks, and findings using collaboration platforms such as Confluence, SharePoint, or other designated tools. Ensure knowledge is effectively shared and accessible across relevant teams. Salary Base salary is £40,398pa with an additional DDaT allowance of £4,350 - £11,000 available. The final salary and allowance awarded will be based on an assessment of your skills and experience as demonstrated at interview. The pay advertised is the maximum that can be offered. Benefits Alongside your salary of £40,398, Companies House contributes £11,703 towards you being a member of the Civil Service Defined Benefit Pension scheme. We offer an excellent benefits package that includes: a generous 30 days annual leave plus 8 bank holidays and 1 privilege day enrolment into the with a contribution rate of averaging 28% a range of recognition schemes including instant awards to thank and recognise each other's efforts and contributions strong ethos of equality, diversity and inclusion great work life balance with flexible and mobile working available for many roles a pro-active approach to employee wellbeing that allows our employees to flourish and be their best at work and has enabled us to become an platinum accredited employer online financial support and advice seasonal flu jabs generous maternity, paternity, adoption and shared parental leave allowances a focus on career development and progression a number of inclusive network groups to support our colleagues and a great sports and social society cycle to work scheme staff discount scheme holiday play scheme for children 3 days paid volunteering leave Key dates (dates are indicative only and could be subject to change) Closing date: 17 August (at 23:55) Sifting: w/c 18 August & w/c 25 August 2025 Technical assessment: w/c 1 September 2025 Interviews - w/c 8 September & w/c 15 September 2025