Systems AdministratorDuration: 12 MonthsLocation: Hybrid - Remote working with one day per week in WalesRate: £500 per dayStart: ASAPIR35 Status: InsideRole OverviewWe 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 ServerNetworking (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 (e.g. ITIL)Desirable:* Experience in a regulated environment (e.g. NIS-CAF)* Knowledge of OT environments, including:SCADA systemsPLCs and telemetry systemsKerberos* Understanding of industrial process control systems* Awareness of Health & Safety and CDM regulations* Experience within utilities or infrastructure sectorsKey Responsibilities include:To support cyber programme activities, delivering infrastructure changes aligned to recognised security frameworks (e.g. E-CAF), across:Windows & Linux serversSQL databasesNetwork 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' standardsRetrofitting 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 systemsEndpoint 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 environmentIf this role is of interest, please email your CV to:Certes Computing (and all of its subsidiary companies) is committed to promoting equality and diversity in its business operations.JBRP1_UKTJ