OT Network Engineer
Houston / REMOTE
Bs degree with 9 years experience
Experience in GICSP
CCNA / CCNP Industrial, CISSP, ISA/IEC 62443 Cybersecurity Certificate Prefered
OT Tools: Claroty, Nozomi Networks, Tenable OT, Dragos, Cyber Insights
Network: Cisco / Rockwell industrial switches, Fortinet FortiGate, Palo Alto NGFW
Protocols: Modbus, DNP3, OPC-UA, Profinet, EtherNet/IP, HART
Standards: IEC 62443, Purdue Model, NIST SP 800-82, ISA-99
Remote Access: Tosibox, Secomea, Cisco ASA
Diagramming: Visio, AutoCAD for P&ID integration
Evaluate OT infrastructure; design secure, resilient ICS/SCADA network architectures
Develop IT/OT network topologies with DMZs, segmentation
Configure firewalls, managed switches, routers, unidirectional gateways, and remote access solutions
Conduct OT network assessments: topology analysis, vulnerability identification, zone/conduit mapping
Implement OT communication protocols securely
Prepare network diagrams, Zones & Conduit documents, and assessment reports with remediation roadmap
Integrate with IT teams ensuring minimal disruption to plant operations during network changes
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