OT System Administrator
Overview.
Glocomms is partnered with a leading power and energy firm to support the hiring of a highly skilled OT Systems Administrator to manage and secure critical infrastructure across industrial environments. This role sits at the intersection of IT and Operational Technology (OT), supporting SCADA/ICS systems while ensuring reliability, compliance, and security across enterprise platforms.
The OT Systems Administrator is responsible for the administration, maintenance, and security of systems supporting mission-critical industrial operations. This individual will play a key role in ensuring system uptime, regulatory compliance and the integrity of infrastructure across both Windows and Linux environments.
Key Responsibilities
- Administer and support OT/ICS infrastructure within critical infrastructure environments.
- Manage Windows Server and Linux systems, including builds, patching, and system hardening.
- Oversee VMware environments and ensure system performance and availability.
- Support NetApp storage operations, including provisioning, replication, and snapshots.
- Execute enterprise backup and recovery, including restore testing and validation.
- Lead patch management and vulnerability remediation using tools like BigFix and Nessus.
- Monitor system health, perform tuning, and support incident response (24/7 on-call).
- Implement and maintain security controls (SIEM/Splunk, endpoint protection, file integrity monitoring).
- Administer Active Directory, GPOs, DNS, and enforce IAM/PAM and least privilege access.
- Support NERC CIP compliance, audits, disaster recovery, and business continuity efforts.
Qualifications
- 5+ years of experience in systems administration within OT, ICS, or critical infrastructure environments.
- Ability to work on-site 5-days a week.
- Strong experience with Windows Server, Linux administration, and VMware virtualization platforms.
- Hands-on expertise with enterprise backup/recovery, patch management, and vulnerability management tools.
- Deep understanding of security practices, including SIEM monitoring, endpoint protection, and system hardening.
- Familiarity with NetApp storage, RTUs, SCADA systems, and industrial protocols.
- Knowledge of Active Directory, IAM/PAM, DNS, and access control frameworks.
- Experience with Splunk, Nessus, BigFix, Tripwire, and AssurX is highly preferred.
- Relevant certifications such as Security+, MCSA/MCSE, or VCP are a plus.
What This Role Offers
- Opportunity to support mission-critical infrastructure in a highly regulated and impactful industry
- Exposure to both IT and OT security and operations
- A collaborative environment with strong emphasis on compliance, reliability, and system integrity
- Career growth within a stable and high-impact energy sector organization
FAQs
Congratulations, we understand that taking the time to apply is a big step. When you apply, your details go directly to the consultant who is sourcing talent. Due to demand, we may not get back to all applicants that have applied. However, we always keep your CV and details on file so when we see similar roles or see skillsets that drive growth in organisations, we will always reach out to discuss opportunities.
Yes. Even if this role isn’t a perfect match, applying allows us to understand your expertise and ambitions, ensuring you're on our radar for the right opportunity when it arises.
We also work in several ways, firstly we advertise our roles available on our site, however, often due to confidentiality we may not post all. We also work with clients who are more focused on skills and understanding what is required to future-proof their business.
That's why we recommend registering your CV so you can be considered for roles that have yet to be created.
Yes, we help with CV and interview preparation. From customised support on how to optimise your CV to interview preparation and compensation negotiations, we advocate for you throughout your next career move.