Performance Engineering Lead for Large-Scale Systems

Scrumconnect Limited; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Scrumconnect Consulting in London is seeking a Lead Performance Tester / Performance Engineering Lead to provide end-to-end ownership of performance testing and performance assurance across complex digital services. This role acts as the performance authority, accountable for defining strategy, leading delivery, and providing formal recommendations on production readiness.

You will own the performance testing strategy, lead volumetric analysis and load testing, define entry/exit criteria,

Qualifications

• Extensive experience leading performance testing for large-scale systems.

Responsibilities

• Own the performance testing strategy for assigned services or programmes.
• Lead volumetric analysis, performance risk assessment, and test scoping.
• Define entry/exit criteria, success measures, and acceptance recommendations.
• Provide performance engineering expertise, including architectural input.
• Lead and coordinate load, stress, soak, and scalability testing activities.
• Oversee integration of performance testing into CI/CD pipelines.
• Analyse results and lead root-cause analysis of systemic performance issues.
• Produce and sign off Test Completion Reports and readiness assessments.
• Engage with senior stakeholders, architects, and governance forums.
• Support Operational Acceptance Testing (OAT) and live readiness.
• Drive continuous improvement and best practices in performance.
• Extensive experience leading performance testing for large-scale systems.
• Strong background in performance engineering, not just tool execution.
• Proven ability to make design and architectural recommendations.
• Experience with cloud platforms (especially AWS).
• Deep understanding of distributed systems, scalability, resilience, and capacity planning.
• Confident stakeholder engagement at technical and leadership levels.
• Experience operating in governed or regulated environments.
• Public-sector or government programme experience.
• Experience with APM, monitoring, observability, or AI-assisted analysis.
• Familiarity with GDS or enterprise assurance frameworks

Skills

Leadership

Performance testing

Performance engineering

CI/CD

AWS

Stakeholder engagement

Governance

Tools

APM tools

Monitoring/observability

Job description

Scrumconnect Consulting in London is seeking a Lead Performance Tester / Performance Engineering Lead to provide end-to-end ownership of performance testing and performance assurance across complex digital services. This role acts as the performance authority, accountable for defining strategy, leading delivery, and providing formal recommendations on production readiness.

You will own the performance testing strategy, lead volumetric analysis and load testing, define entry/exit criteria,