QoS for ICS protocols (e.g. DNP3 Modbus IEC 61850)
Security & Compliance
Develop and enforce OT-specific cybersecurity controls including micro-segmentation firewall zoning and least-privilege access.
Define and implement firewall policies to restrict inter-zone communication and prevent unauthorized access to OT systems.
Conduct risk and vulnerability assessments aligned with OT threat models (ransomware lateral movement supply chain risks).
Ensure compliance with NERC CIP standards and other applicable frameworks.
Implementation & Operations
Lead deployment of SD-WAN solutions across OT sites including integration with existing switching infrastructure (e.g. industrial-grade switches).
Configure and maintain high availability mechanisms:
Redundant paths and failover (active/active or active/standby)
Rapid spanning tree / ERPS / MPLS-TP where applicable
Support incident response and root cause analysis for OT network disruptions.
Manage projects and deliver on time with periodic status reports to management.
Skills
No. of Years of Experience
Detailed Writeup
Total No. of Years of Experience
Certification in related fields (CCNA CCNP) required. Security and Cisco Certified Internetwork Expert (CCIE) and experience in Extreme network switches is a plus.
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.
Minimum Technical Expertise:
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.
Prefer: Strong understanding of networking concepts including routing switching and firewall configurations.
Prefer: Proficiency in network monitoring and management tools.
Prefer: Knowledge of cybersecurity best practices for OT networks.
Prefer: Experience with industrial control systems (ICS) and SCADA systems.
Title Senior OT Network Architect Duration 6 Months No. of Positions 1 Type of Hire Contract to Hire Work Authorization GC/Citizen Work Location Manassas VA In-Office Requirement Must work onsite- no remote- no exceptions Job Description Architecture &...
Title
Senior OT Network Architect
Duration
6 Months
No. of Positions
1
Type of Hire
Contract to Hire
Work Authorization
GC/Citizen
Work Location
Manassas VA
In-Office Requirement
Must work onsite- no remote- no exceptions
Job Description
Architecture & Design
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.
QoS for ICS protocols (e.g. DNP3 Modbus IEC 61850)
Security & Compliance
Develop and enforce OT-specific cybersecurity controls including micro-segmentation firewall zoning and least-privilege access.
Define and implement firewall policies to restrict inter-zone communication and prevent unauthorized access to OT systems.
Conduct risk and vulnerability assessments aligned with OT threat models (ransomware lateral movement supply chain risks).
Ensure compliance with NERC CIP standards and other applicable frameworks.
Implementation & Operations
Lead deployment of SD-WAN solutions across OT sites including integration with existing switching infrastructure (e.g. industrial-grade switches).
Configure and maintain high availability mechanisms:
Redundant paths and failover (active/active or active/standby)
Rapid spanning tree / ERPS / MPLS-TP where applicable
Support incident response and root cause analysis for OT network disruptions.
Manage projects and deliver on time with periodic status reports to management.
Skills
No. of Years of Experience
Detailed Writeup
Total No. of Years of Experience
Certification in related fields (CCNA CCNP) required. Security and Cisco Certified Internetwork Expert (CCIE) and experience in Extreme network switches is a plus.
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.
Minimum Technical Expertise:
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.
Prefer: Strong understanding of networking concepts including routing switching and firewall configurations.
Prefer: Proficiency in network monitoring and management tools.
Prefer: Knowledge of cybersecurity best practices for OT networks.
Prefer: Experience with industrial control systems (ICS) and SCADA systems.
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Monthly Salary:
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