Performance Tester

The Company

Our client is a large retail chain with technology at its forefront. Operating many stores and growing digital platforms. This role supports its technology ecosystem by designing and executing automated performance tests, analysing system behaviour, and collaborating with development and operations teams to ensure applications are scalable, reliable, and performant across digital services and customer platforms.

The Role

We're looking for a senior performance tester to help build and maintain performance testing frameworks, design and execute automated load tests, and analyse system behaviour to ensure scalability, reliability and performance. Whilst the focus of this role is on non-functional testing, as part of the squad work, the role also requires performing functional testing as well.

Key Responsibilities

• Plan and execute functional and non-functional (performance) testing activities
• Define, monitor, and drive performance metrics and benchmarks
• Build and enhance performance testing frameworks and scripts, integrated into CI/CD pipelines
• Design and execute load, stress, spike, and soak tests using k6 and TypeScript
• Analyse performance results to identify bottlenecks, risks, and optimisation opportunities
• Collaborate with engineering teams to ensure test environments are properly configured and instrumented
• Provide insights and recommendations to improve system performance, reliability, and scalability
• Develop and maintain performance dashboards, reporting, and monitoring metrics
• Contribute to performance engineering practices, including profiling, tuning, and capacity planning
• Support test data generation and environment management
• Operate effectively within Agile delivery teams, working independently when required
• Help develop and strengthen performance testing capabilities across engineering teams
• Apply strong troubleshooting, analytical, and problem-solving skills
• Communicate clearly and collaborate effectively across technical and non-technical stakeholders
• Bring an innovative mindset when working across complex technical environments

Key Skills

• Proven experience with k6 and TypeScript for performance testing
• Strong understanding of web and application technologies (HTTP, REST APIs, WebSockets) and Azure cloud environments
• Experience working with CI/CD pipelines (e.g., GitLab CI, Azure DevOps)
• Ability to analyse performance results using Application Insights, Grafana, and Dynatrace
• Solid understanding of performance testing principles and metrics
• Familiarity with Adobe Campaign, Magento, and Adobe Journey Optimiser

Apply Today

Please send your resume by clicking on the apply button.

Alternatively, you can reach out to Freddy Myers on LinkedIn.

Job Reference Number: 06810-0013399893FM

This is a hybrid position.

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