Senior Performance Test Engineer

scrumconnect ltd; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading digital consultancy in the UK is seeking a Senior Performance Tester to conduct load and performance testing across large-scale digital services. The ideal candidate will have strong experience in performance testing for enterprise systems utilizing tools such as JMeter and LoadRunner. Responsibilities include designing tests, analysing results, and ensuring quality in regulated environments. This role supports diversity and inclusion initiatives and encourages candidates from varied backgrounds to apply.

Qualifications

• Strong experience in performance testing of enterprise systems.
• Hands-on delivery using performance testing tools.
• Solid understanding of APIs, HTTP, and databases.
• Experience analysing logs and monitoring data.
• Familiarity with Agile and hybrid delivery models.

Responsibilities

• Design and execute load, stress, volume, and scalability tests.
• Analyse performance results and identify bottlenecks.
• Prepare and maintain performance test scripts.
• Raise performance defects with clear technical evidence.
• Execute tests in cloud-hosted environments.

Skills

Performance testing of enterprise systems

JMeter

Gatling

LoadRunner

k6

APIs and HTTP

Backend and distributed systems performance

Agile methodologies

Job description

About Scrumconnect Consulting

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 Back End 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

Essential Skills & Experience

• Strong experience in performance testing of enterprise systems

• Hands-on delivery using tools such as JMeter, Gatling, LoadRunner, k6 (or equivalent)

• 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

Desirable

• Experience with APM tools (eg Dynatrace, AppDynamics, Elastic Search with Kibana/Grafana across digital services )

• Public-sector or large programme delivery experience

• Familiarity with GDS

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

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 underrepresented 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.