Lead Performance Test Engineer
London, Greater London, W1B, England, UK
Listed on 2026-08-11
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IT/Tech
Cloud Computing: Infrastructure & Operations, Systems Engineer
This job is with Capgemini, an inclusive employer and a member of my Gwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly.
About the job you're consideringWe are seeking a Lead Performance Engineer to lead a team of performance engineers delivering assurance across complex client programmes. You will set the performance strategy, define and agree non-functional requirements and quality gates, and ensure systems are scalable, resilient and ready for production.
Working with engineering, architecture, Dev Ops, SRE, cloud and business teams, you will embed performance engineering throughout the delivery lifecycle
Hybrid working:
The places that you work from day to day will vary according to your role, your needs, and those of the business; it will be a blend of Company offices, client sites, and your home; noting that you will be unable to work at home 100% of the time. If you are offered this position, you will go through a series of pre-employment checks, including identity, nationality (single or dual) or immigration status, employment history going back three continuous years, and unspent criminal record check (known as Disclosure and Barring Service)
- Strong experience in enterprise performance engineering and non-functional testing.
- Experience leading and technically directing performance engineering teams.
- Hands-on expertise with performance testing tools such as Load Runner, JMeter, Neo Load, Gatling or k6.
- Experience designing and executing load, stress, endurance, scalability, volume and failover testing.
- Experience testing web applications, APIs, microservices and distributed systems.
- Knowledge of cloud-native, containerised and modern application architectures.
- Experience integrating performance testing within CI/CD pipelines.
- Experience using monitoring, observability and telemetry tools to identify performance bottlenecks.
- Strong root-cause analysis, diagnostics and performance tuning skills.
- Experience defining performance requirements, workloads, test data, baselines and acceptance criteria.
- Understanding of capacity planning, scalability, resilience and production readiness.
- Strong stakeholder management, communication and consulting skills, with the ability to influence technical and business stakeholders.
- Experience collaborating with architects, developers, Dev Ops, SRE, platform teams and third-party suppliers.
- Ability to lead, coach and develop technical specialists while maintaining delivery quality and standards.
- Experience with Dynatrace, App Dynamics, New Relic, Grafana, Prometheus or Azure Monitor.
- Knowledge of Azure, AWS or Google Cloud Platform.
- Experience with Kubernetes and Infrastructure as Code (IaC).
- Understanding of Site Reliability Engineering (SRE), Service Level Objectives (SLOs) and operational resilience.
- Experience working within regulated, public sector or healthcare environments.
- Relevant certifications in Performance Testing, Cloud, Dev Ops, SRE or Observability disciplines.
To be successfully appointed to this role, it is a requirement to obtain Security Check (SC) clearance.
To obtain SC clearance, the successful applicant must have resided continuously within the United Kingdom for the last 5 years, along with other criteria and requirements.
Throughout the recruitment process, you will be asked questions about your security clearance eligibility such as, but not limited to, country of residence and nationality.
Some posts are restricted to sole UK Nationals for security reasons; therefore, you may be asked about your citizenship in the application process.
You will be empowered to explore, innovate, and progress. You will benefit from Capgemini’s ‘learning for life’ mindset, meaning you will have countless training and development opportunities from think tanks to hackathons, and access to 250,000 courses with numerous external certifications from AWS, Microsoft, Harvard Management or, Cybersecurity qualifications and much more.
You will be encouraged to have a positive work-life balance.…
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