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W2 - 15+ OT Network Architect

Manassas, VA, US • Posted 2 days ago • Updated 2 days ago

Contract W2

6 Months

No Travel Required

On-site

Depends on Experience

Fitment

Dice Job Match Score™

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Job Details

Skills

Cisco
Cyber Security
Computer Networking
Data Link Layer
Analytical Skill
Extreme Networks
Intellectual Property
Firewall
High Availability
IP
Network
Leadership
Management
Modbus
NERC
Network Administration
Network Design
Network Security
Operating Systems
Network Engineering
Network Monitoring
OPC
Cisco Certifications
Communication
Failover
ICS
Root Cause Analysis
WAN
Wireless Networking
Testing
SCADA
SD
Supply Chain Management
Switches
Ethernet
Optimization
Regulatory Compliance
Routing

Summary

Senior OT Network Architect

Location: Manassas, VA (Onsite 100%)
Employment Type: Contract-to-Hire

Job Summary

We are seeking an experienced Senior OT Network Architect to lead the design, implementation, and modernization of Operational Technology (OT) network infrastructure in a mission-critical industrial environment. The ideal candidate will possess deep expertise in OT networking, SD-WAN architecture, cybersecurity, network segmentation, and industrial communication protocols within ICS/SCADA environments.

This role requires hands-on experience designing resilient, secure, and highly available OT network architectures while supporting IT/OT convergence initiatives and compliance standards such as NERC CIP.

Key Responsibilities

Architecture & Design

Design and implement segmented OT network architectures transitioning from flat Layer 2 environments to SD-WAN-enabled, zone-based architectures.
Develop network segmentation strategies using ISA/IEC 62443 zones and conduits models.
Engineer resilient ring and fault-tolerant network topologies across substations and OT environments.
Develop SD-WAN standards including:

Underlay and overlay architecture
Path selection policies based on latency, jitter, and packet loss
QoS optimization for ICS protocols such as DNP3, Modbus, and IEC 61850

Security & Compliance

Implement OT-specific cybersecurity controls including:

Micro-segmentation
Firewall zoning
Least-privilege access

Define and maintain firewall policies to restrict unauthorized inter-zone communication.
Conduct OT-focused risk and vulnerability assessments related to ransomware, lateral movement, and supply chain threats.
Ensure compliance with NERC CIP and other applicable cybersecurity frameworks.

Implementation & Operations

Lead deployment and integration of SD-WAN solutions across OT sites.
Configure and support high-availability and failover mechanisms including:

Active/active and active/standby redundancy
Rapid Spanning Tree
ERPS
MPLS-TP

Troubleshoot OT network incidents and perform root cause analysis.
Manage network implementation projects and provide regular status updates to leadership.

Required Qualifications

10+ years of experience in network architecture and design, preferably within OT, ICS, or SCADA environments.
Strong expertise in:

SD-WAN technologies
Routing and switching
Firewall configurations
Network segmentation

Hands-on experience with industrial protocols including:

Modbus
DNP3
OPC
Ethernet/IP
IEC 61850

Strong understanding of IT/OT convergence principles.
Experience with industrial-grade switching infrastructure and network resiliency technologies.
Excellent troubleshooting and analytical skills.

Preferred Qualifications

Experience with ICS and SCADA systems.
Knowledge of OT cybersecurity best practices.
Familiarity with network monitoring and management tools.
Experience with Cisco networking environments and Extreme Networks switches.

Certifications

CCNA or CCNP required

CCIE

Security certifications are a plus

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.

Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.

Dice Id: 91126058
Position Id: 8975726
Posted 2 days ago

Contact the job poster

Anusha Chenna

Recruiter @ Prohires

View Profile

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