OT Systems Administrator - Critical Infrastructure (On-Site)

Glocomms; Austin (TX); On-site; USD 90,000 - 150,000; Full time

Job summary

Glocomms is seeking an OT Systems Administrator to manage and secure critical infrastructure across industrial environments in Austin, TX. The role sits at IT/OT intersection, supporting SCADA/ICS systems while ensuring reliability, compliance, and security.

Responsibilities include patching, VMware, NetApp storage, backups, and IAM across Windows and Linux, with on-call support. OT/ICS experience and relevant certs are preferred.

Qualifications

• 5+ years of OT/ICS or critical infrastructure sysadmin experience.
• On-site work 5 days/week in Austin, TX.
• Strong Windows/Linux administration and VMware skills.
• Experience with enterprise backup, patching, and vulnerability mgmt.
• Solid security practices: SIEM, endpoint protection, and hardening.
• Familiarity with SCADA/industrial protocols and NetApp storage.

Responsibilities

• Administer OT/ICS infrastructure in critical environments.
• Manage Windows/Linux systems, builds, patching, hardening.
• Oversee VMware environments for performance and uptime.
• Support NetApp storage: provisioning, replication, snapshots.
• Execute backup/recovery; restore testing and validation.
• Lead patching and vulnerability remediation (BigFix/Nessus).
• Monitor health, tune systems, assist incident response (on-call).
• Implement security controls (SIEM, endpoint protection, FIM).
• Administer AD, GPOs, DNS; enforce IAM/PAM and least privilege.
• Support NERC CIP compliance, audits, DR, and BC efforts.

Skills

Windows Server

Linux administration

VMware virtualization

Security monitoring

Active Directory

NetApp storage

IAM/PAM

SCADA/ICS familiarity

Patch management

Vulnerability management

Education

Certifications: Security+, MCSA/MCSE, or VCP

Tools

BigFix

Nessus

Splunk

Tripwire

AssurX

VMware vSphere

Job description

Glocomms is seeking an OT Systems Administrator to manage and secure critical infrastructure across industrial environments in Austin, TX. The role sits at IT/OT intersection, supporting SCADA/ICS systems while ensuring reliability, compliance, and security.

Responsibilities include patching, VMware, NetApp storage, backups, and IAM across Windows and Linux, with on-call support. OT/ICS experience and relevant certs are preferred.