Senior Performance Tester

Senior Performance Tester

Full-Time On-site
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Staines, United Kingdom | Posted on 08/10/2026

Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, and more to deliver innovative digital services that matter.

Role Overview

We are looking for a Senior Performance Tester to deliver hands‑on load and performance testing across large-scale digital services and backend applications, with experience of working with cloud‑based distributed services.

This is a technical, delivery-focused role operating in structured and governed environments where performance, resilience, and scalability are critical to service success.

Key Responsibilities

  • Design and execute load, stress, volume, soak, and scalability tests
  • Analyse performance results, logs, and system metrics to identify bottlenecks
  • Gather and Validate performance NFRs, volumetrics, and capacity assumptions
  • Prepare and maintain performance test scripts and execution runbooks
  • Execute tests in cloud-hosted (AWS) non-production environments
  • Raise performance defects with clear technical evidence
  • Support CI/CD integration for performance testing where required
  • Contribute to test reports, defect triage, and test completion evidence
  • Work closely with developers, architects, platform, and operations teams
  • Strong experience in performance testing of enterprise systems
  • Hands‑on delivery using tools such as JMeter, Gatling, LoadRunner, k6 (or equivalent)

Scope & Accountability

  • Responsible for hands‑on performance test design and execution
  • Owns quality and accuracy of assigned test artefacts and results
  • Contributes analysis and recommendations but does not hold final assurance authority
  • Works under the direction of a Lead Performance Tester or Test Manager
  • Accountable for timely delivery of agreed performance testing activities

Solid understanding of:

  • APIs, HTTP, databases, messaging, caching
  • Backend and distributed system performance characteristics
  • Experience analysing logs and monitoring data
  • Familiarity with Agile and hybrid delivery models
  • Experience working in regulated or high‑assurance environments
  • Experience with APM tools (e.g. Dynatrace, AppDynamics, Elastic Search with Kibana/Grafana across digital services )
  • Public‑sector or large programme delivery experience
  • Familiarity with GDS

Our Commitment to Diversity & Inclusion

At Scrumconnect Consulting, we believe that diversity drives innovation . We are committed to creating an inclusive environment where everyone is respected, valued, and supported. We actively encourage applications from women, people with disabilities, individuals from under‑representated communities , and those seeking flexible working arrangements .

As a Disability Confident Level 1 employer , we provide reasonable adjustments throughout the recruitment process and employment to ensure equal opportunity for all.

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Senior Performance Tester employer: Scrumconnect Limited

Scrumconnect Consulting is an exceptional employer that fosters a collaborative and innovative work culture in the heart of London. With a strong emphasis on professional growth, employees are encouraged to enhance their skills through continuous learning and participation in Agile practices. The company offers competitive benefits and a dynamic environment where your contributions directly impact cutting-edge AI-driven services.

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Contact Details:

Scrumconnect Limited Recruitment Team