Senior Performance Tester

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.

#J-18808-Ljbffr

Full job description from WhatJobs. Apply for this role →