Sr. OT Network Architect (On-site)
HEPCO, Inc.
Manassas, VA
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JOB DETAILS
SALARY
$45–$55 Per Hour
SKILLS
Best Practices, CCIE - Cisco Certified Internetwork Expert, CCNA - Cisco Certified Network Associate, CCNP - Cisco Certified Network Professional, Cisco Network Systems, Computer Networks, Computer Science, Computer Security, Control Systems, Ethernet, Extreme Network Systems, Failover, Firewall Administration, Firewalls, High Availability, IP (Internet Protocol), ISA Standards, Identify Issues, Incident Response, International Electro-Technical Commission (IEC), Internet Security, Maintain Compliance, Network Administration/Management, Network Architecture/Engineering, Network Design, Network Monitoring, Network Operating Systems, Network Performance/Analysis, Network Protocols, Network Routing, Network Security, Network Software, Network Switching, Network Systems, Operations Security (OPSEC), Policy Implementation, Problem Solving Skills, Project/Program Management, QoS (Quality of Service), Ransomware, Risk Analysis, Root Cause Analysis, Status Reports, Supervisory Control and Data Acquisition (SCADA), Supply Chain, Technical Writing, Testing, Threat Modeling, Time Management, Topology, Wide Area Network (WAN), Wireless Communications, Zoning
LOCATION
Manassas, VA
POSTED
7 days ago
Our client is seeking a Senior OT Network Architect to lead the design, implementation, and security of operational technology (OT) network environments. This role is responsible for modernizing network infrastructure, ensuring high availability, and implementing secure, segmented architectures across critical systems.
This is a highly technical role focused on OT/IT convergence, SD-WAN, and cybersecurity within industrial and utility environments.
Key Responsibilities
Architecture & Design
- Design and implement segmented OT network architectures transitioning from flat Layer 2 environments to zone-based, SD-WAN-enabled networks
- Define segmentation strategies aligned with ISA/IEC 62443 (zones and conduits) to protect critical assets
- Engineer resilient network topologies across sites to ensure high availability and fault tolerance
- Develop SD-WAN standards including underlay/overlay architecture, path selection, and QoS for industrial protocols
Security & Compliance
- Implement OT cybersecurity controls including micro-segmentation, firewall zoning, and least-privilege access
- Define and manage firewall policies to control inter-zone traffic
- Conduct risk and vulnerability assessments aligned with OT threat models
- Ensure compliance with NERC CIP and other regulatory frameworks
Implementation & Operations
- Lead deployment of SD-WAN solutions across OT environments
- Integrate new solutions with existing network infrastructure
- Configure high availability and redundancy (failover, spanning tree, MPLS-TP, etc.)
- Support incident response and root cause analysis for network issues
- Manage projects and provide regular status updates to leadership
Required Qualifications
- 10+ years of experience in network architecture and design, preferably in OT environments
- Strong experience with industrial protocols (Modbus, DNP3, OPC, Ethernet/IP)
- Understanding of IT/OT convergence principles
- Strong knowledge of routing, switching, and firewall configurations
- Experience with network monitoring and management tools
Technical Skills
- Experience designing and supporting LAN/WAN networks (Cisco preferred)
- Strong troubleshooting and problem-solving skills
- Ability to interpret technical documentation and apply best practices
- Experience developing and implementing network security procedures
- Familiarity with SCADA and industrial control systems (ICS)
Education & Certifications
- Bachelor’s degree in Computer Science, Networking, or related field
- CCNA or CCNP certification required
- CCIE, security certifications, or experience with Extreme Networks a plus
- Health Insurance
- 401k
By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from HEPCO, Inc and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.hepcoinc.com/privacy/
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, gender expression, marital status, national origin, age, veteran status, disability, or any other protected class.
About the Company
H
HEPCO, Inc.
Discover your next career opportunity with HEPCO
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Since 1973 we’ve helped technical professionals leverage their skills to achieve their career goals. Our technical placement services include temporary, temp-to-hire and direct hire jobs.
No matter where you are in your career or what you’re looking for next, HEPCO makes the job search process simple and rewarding. Our focus on certain specialty areas allows us to offer a tailored, personal approach. We understand what our clients are looking for, which means that we know where you will fit and can help you find a position.
We are committed to supporting and enhancing the careers of the professionals we work with.
Technical Recruiting Experts
At HEPCO, we are committed to providing a positive, professional experience for all of our candidates and contract employees. We leverage our expertise in a variety of technical disciplines to help you find jobs that bring the right amount of challenge and reward to your career.
Job Opportunities
At HEPCO, we are committed to providing a positive, professional experience for all of our candidates and contract employees. We leverage our expertise in a variety of technical disciplines to help you find jobs that bring the right amount of challenge and reward to your career.
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COMPANY SIZE
100 to 499 employeesINDUSTRY
Staffing/Employment Agencies
EMPLOYEE BENEFITS
401K
FOUNDED
1973
WEBSITE
https://hepcoinc.com/