Systems Administrator

Systems Administrator

Duration: 12 Months

Location: Hybrid - Remote working with one day per week in Wales

Rate: £500 per day

Start: ASAP

IR35 Status: Inside

Role Overview

We require an experienced Systems Administrator to support a major cyber security and operational technology (OT) uplift programme within a regulated environment.

This role will focus on secure configuration, system management, and the integration of key technologies across a complex infrastructure. You will play a key role in strengthening security posture, improving system hardening practices, and supporting the roll out of critical security tools already in progress.

Essential Skills & Experience:

As the Systems Administrator you will possess the following:

A trong background in IT systems administration (HND level or equivalent experience)

* Hands-on experience with:

Windows Server, Linux (RedHat preferred), SQL Server
Networking (Cisco Routers/Switches, TCP/IP)

* Experience managing and configuring Active Directory

* Proven ability to manage multiple priorities and projects simultaneously

* Excellent analytical and problem-solving skills

* Strong communication and stakeholder engagement skills

* Experience working within structured frameworks (eg ITIL)

Desirable:

* Experience in a regulated environment (eg NIS-CAF)

* Knowledge of OT environments, including:

SCADA systems
PLCs and telemetry systems
Kerberos

* Understanding of industrial process control systems

* Awareness of Health & Safety and CDM regulations

* Experience within utilities or infrastructure sectors

Key Responsibilities include:

To support cyber programme activities, delivering infrastructure changes aligned to recognised security frameworks (eg E-CAF), across:

Windows & Linux Servers
SQL databases
Network infrastructure (including Cisco)
WAN services and data centres

* Improve system patching and secure configuration in line with vulnerability management standards

* Drive system hardening best practices, including:

Development and deployment of "gold build" standards
Retrofitting security controls to existing systems

* Investigate and resolve incidents and problems, ensuring minimal disruption to business-critical systems

* Support the roll out and configuration of security technologies, including:

Network intrusion detection systems
Endpoint Detection & Response (EDR)
Enterprise backup solutions

* Collaborate on documentation for secure management of IT and security tooling within an OT environment

* Ensure robust User Acceptance Testing (UAT) prior to system releases

* Strengthen Identity & Access Management processes, including Joiner/Mover/Leaver workflows

* Support implementation and ongoing management of Active Directory, including identity governance

* Manage system changes within an ITIL-based framework

* Work with internal teams and third-party suppliers to implement cyber and physical security controls

* Deliver work in line with governance standards, project timelines, cost, and quality expectations

* Able to work in a collaborative, multi-disciplinary environment

If this role is of interest, please email your CV to: (see below)

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