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Performance Tester – Security Cleared

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: Jobtailor
Full Time position
Listed on 2026-09-13
Job specializations:
  • IT/Tech
    IT QA Tester / Automation, Technical Support
Salary/Wage Range or Industry Benchmark: 60000 - 85000 GBP Yearly GBP 60000.00 85000.00 YEAR
Job Description & How to Apply Below
Location: Greater London

  • Work on performance testing projects covering API, Front End, and UI-based performance testing
  • Gather performance test requirements through project and client engagement meetings
  • Review and analyse non-functional requirements (NFRs) to ensure they are clear and testable
  • Develop performance test scripts
  • Execute and report on performance tests to technical and business stakeholders
  • Identify performance test failures against NFRs
  • Perform performance testing against Azure infrastructure
  • Carry out performance test analysis
  • Communicate issues and risks clearly and promptly to relevant stakeholders
  • Support performance testing projects for public and private sector clients
Requirements
  • Experienced Non Functional Test Engineer with demonstrable experience in Performance Testing and Non Functional Testing
  • Performance testing background is required; candidates without demonstrable performance testing experience will not be considered
  • Experience working as a performance tester/engineer in previous roles
  • Ability to work on multiple projects simultaneously and manage time effectively
  • Experience developing, executing, and maintaining performance test scripts
  • Experience with Gatling (preferred), JMeter, or Load Runner
  • Good interpersonal skills
  • Experience working with client teams or third parties
  • Experience in other areas of NFT such as Accessibility, Compatibility, Usability, or Disaster Recovery would be beneficial
  • Excellent written and spoken communication skills
  • Ability to engage successfully with team members and clients
Core Competencies

Demonstrates expertise in Performance Testing and Non-Functional Testing, with a strong ability to develop and execute performance test scripts while effectively communicating issues and risks to stakeholders. Proficient in performance testing on Azure infrastructure and engaging with client teams.

Highest-signal resume keywords
  • Performance Testing
  • Non-Functional Testing
  • Performance Test Script Development
  • Gatling
  • JMeter
Hard Skills
  • Performance Testing
  • Non-Functional Testing
  • Performance Test Script Development
  • Performance Test Execution
  • Performance Test Analysis
Soft Skills
  • Interpersonal Skills
  • Communication Skills
  • Time Management
Industry Keywords
  • API Testing
  • UI Testing
  • Client Engagement
  • Stakeholder Communication
  • Accessibility Testing
Tools & Technologies
  • Gatling
  • JMeter
  • Load Runner
  • Azure Infrastructure
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