Infrastructure Engineer (PKI) - Paying up to £450 Per Day, Inside IR35, Based in South Wales, 4 to 6 Month Contract, To Start ASAP

Your new company

You will be working with a leading organisation that is based in South Wales.

Your new role

We're seeking an Infrastructure Engineer with strong PKI expertise to support a critical upgrade of an enterprise Public Key Infrastructure (PKI) environment, moving from Windows Server 2016 to Server 2025.

This is a hands-on delivery role for someone who has personally led or contributed to PKI upgrades or migrations and can step in quickly to help drive the programme forward.

The Role:

- Support the upgrade and modernisation of an existing PKI estate
- Work across Microsoft Certificate Services (AD CS)
- Ensure a secure and stable migration to Server 2025

Review and optimise:

- CA hierarchy (Root & Subordinate)
- Certificate life cycle & auto-enrolment
- CRL/AIA configuration

- Troubleshoot and resolve PKI-related issues during transition
- Work closely with internal teams to ensure smooth delivery

What you'll need to succeed

- Proven experience delivering PKI upgrades or migrations end-to-end

- Strong expertise in:

Microsoft PKI/AD CS
Windows Server (2016 - newer versions)

- Solid understanding of:

Certificate life cycle management
Secure enterprise infrastructure environments

- Ability to operate as a hands-on engineer, not purely advisory

What you need to do now

If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.

Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found on our website.