Infrastructure Tester - DV Cleared - Windows & Linux

CBSbutler Holdings Limited trading as CBSbutler; Winchester; On-site; GBP 110,700 - 114,390; Full time

Job summary

CBSbutler Holdings Limited trading as CBSbutler is seeking an experienced Infrastructure Tester to join a secure, DV-cleared delivery team in Hampshire. The role focuses on testing Windows and Linux infrastructure, ensuring security, reliability and readiness for deployment in high-security environments.

You will work in an Agile setting (SAFe desirable) with manual testing, defect management and end-to-end testing, and knowledge of IDAM, PKI, servers, networking and virtualization is essential.

Qualifications

• Infrastructure testing across Windows and Linux.
• Knowledge of IDAM, PKI, servers, networking and virtualization.
• Experience with manual testing, defect management, and integration/end-to-end testing.
• Agile environment experience (SAFe desirable).
• ISTQB Foundation certification is advantageous.

Responsibilities

• Test and validate Windows and Linux infrastructure to ensure security and deployment readiness.
• Work within a secure Agile delivery team on critical IT infrastructure projects.

Skills

Windows testing

Linux testing

IDAM

PKI

Servers

Networking

Virtualisation

Manual testing

Defect management

End-to-end testing

Agile SAFe

ISTQB Foundation

Job description

Infrastructure Tester - DV Cleared

Location: Hampshire (Full time onsite)

Compensation: £600 to £620 per day

Clearance: Requires DV Clearance

We are looking for an experienced Infrastructure Tester to join a secure, Agile delivery team supporting critical IT infrastructure projects. You'll be responsible for testing and validating Windows and Linux infrastructure, ensuring systems are secure, reliable, and ready for deployment.

Key Skills

• Infrastructure testing experience across Windows and Linux.
• Knowledge of IDAM, PKI, servers, networking, and virtualisation.
• Experience with manual testing, defect management, and integration/end-to-end testing.
• Agile environment experience (SAFe desirable).
• ISTQB Foundation is advantageous.

Requirements

• Active UKSV DV clearance (MOD DV accepted).
• UK national holding a single valid UK passport.
• Experience in testing and validating critical IT infrastructure in a high-security environment.
• Knowledge of secure deployment practices.

Apply now if you're a DV-cleared Infrastructure Tester looking for your next challenge.