Operational Technology Network Admin DoD SCADA

C3EL; Guam (MO); On-site; USD 90,000 - 120,000; Full time

Job summary

C3EL is seeking an experienced Operational Technology (OT) Network Administrator to support DoD facility operations in Guam. You will provide advanced network administration and cybersecurity for IT/OT environments, ensuring secure and highly available connectivity for facility control systems and mission-critical operations.

The ideal candidate will have hands-on experience with IC, SCADA, BMS, FRCS, or other OT environments, strong knowledge of network segmentation, industrial protocols,

Qualifications

• Active Top Secret clearance required.
• 5+ years of advanced network administration experience.
• 3+ years OT/IC/SCADA/BMS/FRCS experience.
• Intermediate certifications: Security+, CEH, Cloud+, GCIH, GICSP, GSEC, or SSCP.
• Advanced certifications: SecurityX (CASP+), CCNA, CCNP Security, CCSP, GCED, GCIA, GCLD, GDSA, or GFACT.

Responsibilities

• Perform advanced network administration, troubleshooting, and maintenance of IT/OT environments.
• Configure, maintain, and troubleshoot network infrastructure including routers, switches, VLANs, routing protocols, firewalls, ACLs, and segmentation.
• Support secure integration and operation of OT, ICS, SCADA, BMS, and FRCS.
• Develop and maintain firewall rules, access controls, and security configurations for deterministic traffic.
• Apply DoD cybersecurity requirements, including STIGs and secure configuration management.
• Assist with network design, testing, and commissioning activities.
• Analyze network performance metrics: bandwidth, latency, jitter, packet loss, connectivity.
• Utilize Wireshark for issue troubleshooting and analysis.
• Develop network documentation: topology diagrams, backups, and reports.
• Support OT segmentation aligned with Purdue Model concepts.

Skills

Routing & Switching

Firewall Administration

Network Segmentation

OT/ICS Networks

DoD Cybersecurity

Packet Analysis

Education

High School Diploma or equivalent

Tools

Wireshark

Cisco/Juniper Networking Gear

Industrial Protocols (DNP3/Modbus)

Job description

C3EL is seeking an experienced Operational Technology (OT) Network Administrator to support DoD facility operations in Guam. You will provide advanced network administration and cybersecurity for IT/OT environments, ensuring secure and highly available connectivity for facility control systems and mission-critical operations.

The ideal candidate will have hands-on experience with IC, SCADA, BMS, FRCS, or other OT environments, strong knowledge of network segmentation, industrial protocols,