Non-Functional Testing Engineer / Lead (SC cleared)

Cognizant; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Job summary

Cognizant is seeking a Senior NFT Performance Tester to join our Quality Engineering & Assurance practice in London. The role focuses on non-functional testing across cloud-native and legacy environments, delivering reliable performance and scalable QA solutions.

You will engage in NFT lifecycle activities, set up PoCs in AWS, lead CI/CD integrations, and guide project teams with performance insights. SC clearance is required, with 3 days in London office weekly.

Qualifications

• NFT testing experience and understanding of non-functional requirements.

Responsibilities

• Gather NFRs, run workshops, plan, scope, and estimate NFT efforts.

Skills

NFT testing

Performance testing

Agile

DevOps

DevSecOps

Stakeholder mgmt

Team leadership

Tools

JMeter

AWS

Kubernetes

Docker

AWS CLI

Grafana

Prometheus

AWS CloudWatch

GitLab

CI/CD pipelines

Jira

Confluence

Job description

Role will be part of our Quality Engineering & Assurance (QE&A) Practice. With more than 650 clients across industry verticals and a global footprint, Cognizant QE&A practice is a recognized thought leader in quality engineer and Assurance .As enterprises simplify, modernize and secure their legacy environments for the digital era, robust quality Engineering and assurance is essential. Quality takes an end-to-end connotation and must straddle both legacy and digital systems. Cognizant QE&A is reimagining QE&A, employing an end-to-end ecosystem approach with intelligent and automated QA processes. In so doing, increasing quality and speed to promote faster business and technology change, as well as a better customer experience.

Candidate Must be SC cleared and 3 days working from office in London.

Key Responsibilities

• Gather Non-Functional Requirements (NFRs), conduct workshops, scoping, planning, and estimation.
• Develop and maintain performance test scripts using JMeter.
• Build Proof of Concepts (PoCs) in AWS environments.
• Set up and configure monitoring tools such as Grafana, Prometheus, and AWS CloudWatch.
• Provide NFT consultancy and guidance to project teams.
• Execute performance tests in CI/CD environments (GitLab pipelines).
• Analyse results, identify bottlenecks, and create detailed performance reports.
• Prepare NFT test plans and execution strategies.
• Recommend remediation actions to technical teams for performance issues.
• Extensive experience in Non-Functional Testing (NFT).
• Strong hands-on expertise in JMeter.
• Experience with AWS, Kubernetes, Docker, and AWS CLI.
• Performance monitoring using Grafana, Prometheus, and AWS CloudWatch.
• Ability to integrate monitoring tools with performance testing solutions.
• Experience setting up tools in cloud environments and demonstrating PoCs.
• Strong experience with GitLab and CI/CD pipelines.
• Expertise in performance analysis, bottleneck identification, and reporting.
• End-to-end NFT lifecycle experience covering:
  • NFR gathering
  • Planning
  • Execution
  • Analysis
• Strong knowledge of Agile, DevOps, and DevSecOps methodologies.
• Familiarity with tools such as JIRA and Confluence. 1

Preferred Profile

• Good experience in Performance Testing / NFT.
• Experience with cloud-native applications, microservices, and container platforms.
• Strong communication and stakeholder management skills.
• Ability to work independently and lead NFT engagements.