CNI Infrastructure Wintel & Security Tools Analyst (Active SC Clearance) - 6 months - Warwick(Hybrid

CNI Infrastructure Wintel & Security Tools Analyst (Active SC Clearance) - 6 months - Warwick(Hybrid) - Inside IR35

We are looking for a Wintel and Security Tools Analyst to provide operational support, administration and troubleshooting for enterprise Windows infrastructure and cybersecurity tools, including endpoint management and antivirus platforms, at a UK critical national infrastructure organisation. You will keep the Windows estate healthy and tune the security tooling to protect the business with minimal disruption to users. The initial contract is 6 months, with extension depending on performance. It is hybrid, with 3 days per week on-site in Wokingham. Active SC clearance is required.

Key Responsibilities:

• Support and administer Windows Server (2016/2019/2022): Active Directory, Group Policy, DNS, DHCP, patching, upgrades and hardening
• Manage AD users and groups and provide IAM support
• Provision and maintain virtual machines, and monitor performance, availability and capacity
• Administer and maintain enterprise antivirus and endpoint management platforms, including agent health, deployment status and policy sync across workstations and Servers
• Run updates, patching and version upgrades for security software
• Act as technical escalation point for support desks on agent malfunctions, install failures and software conflicts
• Tune detection rules, exclusions and policies to cut false positives while keeping protection strong, and optimise AV/IDS performance
• Work with vendors to resolve complex bugs, outages and integration issues
• Onboard new device types, operating systems and software into the endpoint ecosystem
• Handle incidents, requests and problems in ITSM tools, and prepare for and complete audits
• Document configurations, runbooks and troubleshooting procedures

What You Will Ideally Bring:

• Active SC clearance (essential)
• Windows Server administration, including Active Directory, GPO, DNS and DHCP
• Managing and supporting antivirus (AV) solutions
• Supporting cybersecurity and endpoint management tools
• Windows and Linux system administration tools and processes
• ITSM incident, request and problem management
• Understanding of monitoring tools, AV and endpoint security concepts (desirable)

Contract Details:

• Rate: £350 per day (Inside IR35)
• Location: Hybrid in Wokingham (3x a week)
• Contract Length: 6-Month Initial Contract - Inside IR35