OT Network Administrator for DoD Facilities

C3EL; Missouri; On-site; USD 120,000 - 180,000; Full time

Job summary

C3EL seeks an experienced Operational Technology (OT) Network Administrator to support critical DoD facility operations in Guam. You will administer and secure IT/OT networks, ensuring reliable connectivity for ICS/SCADA and building management systems.

The role requires hands-on OT/ICS network experience, DoD cybersecurity compliance, and collaboration with government stakeholders. Strong documentation and communication skills are essential.

Qualifications

• Active Top Secret clearance required.
• Minimum 5 years of advanced network administration experience.
• Minimum 3 years of OT/ICS/SCADA/BMS/FRCS or IT/OT network experience.
• Experience with routing and switching, VLANs, firewall admin, ACLs, and network segmentation.
• Experience applying DoD cybersecurity requirements and STIGs in OT environments.
• Excellent communication and technical documentation skills.

Responsibilities

• Perform advanced network administration and troubleshooting for IT/OT environments supporting DoD facilities.
• Configure and maintain routers, switches, VLANs, routing protocols, firewalls, ACLs, and segmentation.
• Support OT/ICS/SCADA/BMS/FRCS integration and operation.
• Develop and maintain firewall rules and security configurations for secure, deterministic traffic.
• Apply DoD cybersecurity requirements and secure configurations within OT environments.
• Support design, modernization, testing, commissioning, and acceptance activities.
• Analyze bandwidth, latency, jitter, packet loss, and connectivity metrics.
• Use Wireshark and other tools to troubleshoot network issues.
• Create and maintain topology diagrams, backups, and technical reports.
• Support OT network segmentation aligned with Purdue Model and best practices.
• Coordinate with government and vendors to resolve issues.
• Prepare documentation and status updates for leadership and stakeholders.

Skills

Advanced network administration

OT/IT integration

DoD cybersecurity requirements

Stakeholder communication

Technical documentation

Packet capture (Wireshark)

Education

High School diploma or equivalent

DoD cybersecurity certifications (Security+, CEH, CCNA/CCNP, etc.)

Tools

Wireshark

Microsoft Office Suite

Network firewall management tools

Job description

C3EL seeks an experienced Operational Technology (OT) Network Administrator to support critical DoD facility operations in Guam. You will administer and secure IT/OT networks, ensuring reliable connectivity for ICS/SCADA and building management systems.

The role requires hands-on OT/ICS network experience, DoD cybersecurity compliance, and collaboration with government stakeholders. Strong documentation and communication skills are essential.