Senior Non-Functional Test Engineer (SC)

Sanderson Government & Defence; City Of London; Hybrid; GBP 77,000 - 92,000; Part time

Benefits offered by this job

Remote work option

London onsite 2 days per month

Active SC Clearance

Job summary

Sanderson Government & Defence is seeking an experienced Non-Functional Test Engineer to own NFT strategy, tooling and delivery across a complex digital estate. You will perform performance, accessibility, security, resilience, and interoperability testing in an Agile environment, collaborating with delivery teams, specialists and suppliers to ensure quality releases.

The role demands hands-on testing expertise, strong automation focus with Playwright/WebdriverIO/Cypress, API testing via

Qualifications

• Strong experience delivering non-functional testing within complex Agile environments.
• Expertise in JavaScript-based automation frameworks including Playwright, WebdriverIO and Cypress.
• Experience testing APIs using open-source JavaScript frameworks/libraries or Postman.
• Performance and load testing expertise using JMeter or K6.
• CI/CD pipelines using Jenkins, AWS and/or Azure DevOps; GitHub version control.

Responsibilities

• Evaluate and recommend testing tools, frameworks, and practices across the DEFRA testing community.
• Plan, build and execute non-functional testing activities.
• Deliver testing across performance, accessibility, security, resilience and interoperability requirements.
• Interpret test results and communicate business and user impact to stakeholders.
• Ensure sufficient NFT evidence is produced to support release decisions.
• Work with specialist teams and third-party suppliers to deliver test coverage.
• Apply exploratory testing techniques to risk areas and high business value.
• Support continuous improvement of testing practices and automation capability and test strategy.

Skills

Non-functional testing

Playwright

WebdriverIO

Cypress

API testing

Postman

Performance testing

Load testing

Jenkins

AWS

Azure DevOps

GitHub

Exploratory testing

Risk-based testing

Stakeholder communication

Tools

Playwright

WebdriverIO

Cypress

Postman

JMeter

K6

Jenkins

AWS

Azure DevOps

GitHub

Job description

Non-Functional Test Engineer

£458.24 per day | 6 Month Contract | Active SC Clearance Required

Remote with 2 days per month onsite in London

We're supporting a major government programme seeking an experienced Non-Functional Test Engineer to take ownership of the NFT strategy, tooling, and delivery across a complex digital estate.

This is a hands-on role focused on performance, accessibility, security, resilience, and interoperability testing, working closely with delivery teams, specialists, and suppliers to ensure confidence in releases and service quality.

Key Responsibilities

• Evaluate and recommend testing tools, frameworks, and practices across the DEFRA testing community.
• Plan, build and execute non-functional testing activities.
• Deliver testing across performance, accessibility, security, resilience and interoperability requirements.
• Interpret test results and communicate business and user impact to stakeholders.
• Ensure sufficient NFT evidence is produced to support release decisions.
• Work collaboratively with specialist teams and third-party suppliers to deliver appropriate test coverage.
• Apply exploratory testing techniques to target areas of highest risk and greatest business value.
• Support continuous improvement of testing practices, automation capability and test strategy.

Essential Skills

• Strong experience delivering non-functional testing within complex Agile environments.
• Expertise in JavaScript-based automation frameworks including:
  • Playwright
  • WebdriverIO
  • Cypress
• Experience testing APIs using open-source JavaScript frameworks/libraries or Postman.
• Performance and load testing expertise using JMeter or K6.
• Strong experience working with CI/CD pipelines using Jenkins, AWS and/or Azure DevOps.
• Excellent GitHub knowledge and version control practices.
• Proven ability to analyse and present testing outcomes to both technical and non-technical stakeholders.
• Experience using exploratory testing techniques and risk-based testing approaches.

Contract Details

• £458.24 per day
• Initial 6-month contract
• Remote working
• London attendance required approximately 2 days per month
• Active SC Clearance required

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.