Sr. IT/OT Network Architect - SD-WAN, micro-segmentation

Syncreon Consulting • Gainesville, VA

2d

About The Position

This role involves designing and implementing a segmented OT network architecture, transitioning from flat Layer 2 networks to SD-WAN-enabled, zone-based architectures. The architect will define network segmentation strategies using the ISA/IEC 62443 zones and conduits model to isolate critical OT assets and control east-west traffic. Responsibilities include engineering ring and/or resilient topologies across substations and core OT sites to ensure deterministic communication and fault tolerance, and developing SD-WAN design standards.

Requirements

• Certification in related fields (CCNA, CCNP) required.
• 10+ years of experience in network design and architecture, preferably in OT environments.
• Experience with industrial protocols (e.g., Modbus, DNP3, OPC, Ethernet/IP).
• Familiarity with IT/OT convergence principles.
• Knowledge of design, configuration, installation, testing, and maintenance of local and wide area computer wired and wireless networks (Cisco Systems preferred).
• Knowledge of computer network characteristics, network operating system software, and network components.
• Troubleshooting skills and the ability to diagnose/resolve network system problems.
• Ability to interpret and apply complex technical manuals and reference materials.
• Ability to assist with developing network security and related procedures; and performing network management activities.

Nice To Haves

• Security and Cisco Certified Internetwork Expert (CCIE) is a plus.
• Experience in Extreme network switches is a plus.
• Strong understanding of networking concepts, including routing, switching, and firewall configurations.
• Proficiency in network monitoring and management tools.
• Knowledge of cybersecurity best practices for OT networks.
• Experience with industrial control systems (ICS) and SCADA systems.

Responsibilities

• Design and implement a segmented OT network architecture transitioning from flat Layer 2 networks to SD-WAN-enabled, zone-based architectures.
• Define network segmentation strategy (ISA/IEC 62443 zones and conduits model) to isolate critical OT assets and control east-west traffic.
• Engineer ring and/or resilient topologies across substations and core OT sites to ensure deterministic communication and fault tolerance.
• Develop SD-WAN design standards including: Underlay/overlay architecture, Path selection policies (latency, jitter, packet loss), QoS for ICS protocols (e.g., DNP3, Modbus, IEC 61850).

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed