Infrastructure Tester - DV Cleared

CBSbutler Holdings Limited trading as CBSbutler; Cliddesden; On-site; GBP 111,000 - 114,000; Full time

Job summary

CBSbutler is seeking an Infrastructure Tester to join a secure, Agile delivery team in Hampshire. The role focuses on testing Windows and Linux infrastructure within a high-security environment to ensure security, reliability, and deployment readiness.

Applicants must hold UK DV clearance and UK nationality with a valid passport. The position is full-time and onsite, offering a daily rate of £600–£620.

Qualifications

• 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.

Responsibilities

• Test and validate Windows and Linux infrastructure to ensure security and reliability.
• Ensure infrastructure is ready for deployment in high-security environments.
• Collaborate with developers and operations in an Agile delivery team to verify quality and performance.

Skills

Infrastructure testing

Windows & Linux

IDAM & PKI

Manual testing

Agile SAFe

ISTQB Foundation

Job description

Infrastructure Tester - DV Cleared | Windows & Linux | High-Security Environment

• Hampshire based role
• Full time onsite
• £600 to £620 per day
• 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.

This is an excellent opportunity to work on high-profile, secure programmes within a collaborative technical team.