Location
Hampton Coal Wharf, Hybrid working with Clearwater Court, Reading as base location.

Hours
36 hours per week, Monday to Friday.

Salary
Up to £66,435 per annum, depending on experience.

About the Role
As an Operational Technology (OT) Compute System Engineer, you will manage and support OT-specific enterprise systems and applications that are critical to operational technology services for both end customers and the wider business. You will ensure all systems under the compute remit remain compliant, secure, and aligned with industry standards. Your responsibilities include maintaining and lifecycle management of OT compute infrastructure, patching, license management, and supporting new technical solutions including cloud-based technologies. Acting as a key point of contact for incident response, you will demonstrate strong problem-solving skills and the ability to act quickly under pressure. You will assist in designing and implementing infrastructure changes, ensuring system security compliance through audits and proactive management, and supporting updates across the full technology stack including applications, OS, BIOS, and hypervisors. You will administer and support a wide range of enterprise technologies such as Active Directory, SCCM, VMware, Symantec Endpoint Protection, Dell OpenManage Enterprise, Canonical patching tools, NTP, PKI/certificates, and hybrid Azure environments. Additionally, you will contribute to the integration and evolution of Industry 4.0 solutions within the OT compute domain and participate in an out-of-hours on-call rota after probation to provide emergency support for critical OT systems. Collaboration with other technical teams to deliver infrastructure improvements and new deployments is essential. You will stay current with industry best practices and act as a Subject Matter Expert (SME) within the compute domain while engaging in ongoing personal development and training. This role requires participation in a mandatory 24/7 standby support rota.

Benefits
Competitive salary up to £66,435 per annum depending on experience, plus a £4,500 car allowance. 26 days annual leave increasing to 30 with length of service, plus bank holidays. Performance-related pay linked to company and individual targets. Generous pension scheme through AON. Access to a wide range of health and wellbeing benefits including annual health MOTs, physiotherapy, counselling, Cycle to Work schemes, shopping vouchers, and life assurance. Thames Water offers meaningful career opportunities, flexible working arrangements, and a diverse and inclusive workplace culture.

Experience
Proven experience maintaining, patching, and supporting infrastructure and enterprise systems. Familiarity with enterprise application administration including Active Directory, SCCM, VMware, AV software, and Azure cloud services. Knowledge of IP communications and networking (LAN/WAN). Experience with scripting and automation using PowerShell or similar. Experience working within large-scale enterprise environments or the utility industry is desirable. Experience with stakeholder analysis and managing relationships across multiple technical and business teams is advantageous.

About You
Self-motivated, detail-oriented, and able to work under pressure. Strong interpersonal and communication skills, confident in engaging with both technical and non-technical stakeholders. Proven decision-making skills balancing operational, commercial, and customer needs. Willingness to learn industry-specific SCADA systems. Ability to work collaboratively within a team and contribute as a Subject Matter Expert. Committed to personal development and continuous learning.

Qualifications
Higher education qualification (HNC or equivalent experience) in engineering or IT discipline. Security clearance to SC level (Security Clearance: CTC desirable and will be obtained if not already held). Desirable certifications include Microsoft Certified Solutions Associate (MCSA) – Server, SQL, SCCM; Microsoft Applied Skills – Administer Active Directory Domain Services; Microsoft Azure Fundamentals and/or Azure Administrator Certification; VMCE certification or hands-on experience with Veeam Backup & Replication; Symantec Endpoint Protection administration certification.