Performance Tester – Security Cleared

Jobtailor; Greater London; On-site; GBP 60,000 - 85,000; Full time

Job summary

Jobtailor is seeking an experienced Non-Functional Test Engineer to join a team delivering performance testing across API, frontend, and UI layers. You will gather requirements via client engagements, craft and execute scripts, and report findings to stakeholders.

The role emphasizes testing against NFRs, working with Azure infrastructure, and collaborating with client teams on multiple simultaneous projects. Strong communication and time management are essential.

Qualifications

• 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 LoadRunner.
• 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.

Responsibilities

• 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.

Skills

Non-Functional Testing

Performance Testing

Test Script Development

Communication Skills

Time Management

Tools

Gatling

JMeter

LoadRunner

Azure Infrastructure

Job description

• 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 LoadRunner
• 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
• LoadRunner
• Azure Infrastructure