Senior Performance Tester: Cloud-Scale Load Testing

scrumconnect ltd; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

Scrumconnect Consulting in the United Kingdom is seeking a Senior Performance Tester to deliver hands-on load and performance testing across large-scale services and back-end applications, including cloud-hosted environments (AWS).

You will design, execute and analyse tests, gather NFRs, and work with developers, architects and operations to improve resilience and scalability in regulated, government-facing contexts. Strong knowledge of JMeter, Gatling or LoadRunner is required.

Qualifications

• 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.

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

Skills

Performance testing

JMeter

Gatling

LoadRunner

k6

APIs

HTTP

Databases

Distributed systems

Log analysis

Agile delivery

Hybrid delivery

Regulated environments

Tools

JMeter

Gatling

LoadRunner

k6

Dynatrace

AppDynamics

Kibana

Grafana

ElasticSearch

Job description

Scrumconnect Consulting in the United Kingdom is seeking a Senior Performance Tester to deliver hands-on load and performance testing across large-scale services and back-end applications, including cloud-hosted environments (AWS).

You will design, execute and analyse tests, gather NFRs, and work with developers, architects and operations to improve resilience and scalability in regulated, government-facing contexts. Strong knowledge of JMeter, Gatling or LoadRunner is required.