Performance Test Engineer

Performance Test Engineer

£450/day | Inside IR35 | Primarily Remote | Occasional Travel to London | Until 31st March 2027 | ASAP Start

We're looking for an experienced Performance Test Engineer to join a large-scale enterprise transformation programme, helping to ensure the performance, scalability and operational readiness of critical cloud-based services.

You'll work closely with engineering, DevOps and QA teams to design and execute performance testing strategies, analyse system behaviour under load, and provide recommendations to improve application resilience and user experience.

Key Responsibilities

• Design, develop and execute performance, load, stress and endurance tests across AWS-hosted applications.
• Create and maintain automated performance test scripts using JMeter and K6.
• Carry out Operational Acceptance Testing (OAT) to ensure services are production-ready.
• Analyse test results, identify bottlenecks and work with development teams to resolve performance issues.
• Monitor application and infrastructure performance using industry-standard monitoring tools.
• Produce detailed performance reports and communicate findings to technical and non-technical stakeholders.
• Integrate performance testing into CI/CD pipelines and support continuous quality improvement.
• Collaborate with cross-functional teams throughout the software delivery lifecycle.

Skills & Experience

Essential

• Strong commercial experience delivering performance testing within enterprise environments.
• Hands-on expertise with JMeter and K6.
• Experience testing applications hosted within AWS.
• Strong knowledge of performance, load, stress and endurance testing methodologies.
• Experience delivering Operational Acceptance Testing (OAT).
• Hands-on experience with monitoring and observability tools including:
  • Splunk
  • AppDynamics
  • Grafana
  • AWS CloudWatch
  • Dynatrace
• Experience using Jenkins, GitHub, Jira and Confluence.
• Strong understanding of APIs, distributed systems and modern cloud architectures.
• Experience working within Agile delivery teams.

Desirable

• Experience integrating performance testing into CI/CD pipelines.
• Knowledge of microservices and containerised environments.
• Previous experience working on large-scale digital transformation programmes.