Senior Network Engineer – OT Networks

ComTec Information Systems (IT); New Orleans (LA); Hybrid; USD 110,000 - 160,000; Full time

Job summary

ComTec Information Systems (IT) is hiring a Senior Network Engineer – OT Networks to design, deploy, troubleshoot, and maintain corporate and OT networks with a focus on security, compliance, and reliable operations.

The role requires autonomous project execution and strong technical skills to support critical infrastructure in a hybrid work environment. You will implement routing, switching, DDI/IPAM, and OT segmentation, and develop automation scripts to streamline provisioning and monitoring.

Qualifications

• 8+ years of network engineering experience in enterprise and OT environments.
• Experience with both greenfield and brownfield network projects.
• Strong hands-on experience with enterprise routing and switching.
• Proficient in tools like Wireshark, SolarWinds and Nessus.
• Prior experience with utility or critical infrastructure networks is desirable.
• Knowledge of Infoblox IPAM and DNS/DHCP services.
• Understanding of NERC CIP, BCSI, and change-management processes.
• Ability to produce runbooks and support audit readiness.
• Ability to work independently in a fast-paced environment.
• Scripting skills for automation (Python/PowerShell/Bash/Ansible).
• Experience documenting changes in ServiceNow (CI/CMDB, change management).
• Comfort with evolving processes and creating lightweight procedures.
• Excellent written and verbal communication.

Responsibilities

• Support and maintain network infrastructure within data centers, substations, power plants, and offices.
• Design, implement, and support wired, wireless, cellular, and OT network solutions.
• Monitor performance, troubleshoot, and optimize networks across enterprise and OT environments.
• Develop scripts to automate configuration, firmware updates, monitoring, and provisioning workflows.
• Troubleshoot complex, multi-vendor issues across routing, switching, DDI, and security layers.
• Use tools like Wireshark, SolarWinds, and Nessus to diagnose problems.
• Assist with installation, configuration, and support of network hardware, including Infoblox for IPAM/DNS/DHCP.
• Independently scope, plan, and execute network projects; create runbooks and checklists.
• Collaborate with security/compliance/engineering to ensure OT segmentation and regulatory requirements.
• Assist with change management and documentation per NERC CIP and BCSI.

Skills

Enterprise networking

OT networks

Network design

Troubleshooting

Scripting (Python/PowerShell/Bash)

Automation (Ansible)

Wireshark

SolarWinds

Nessus

Infoblox / IPAM

NERC CIP compliance

Audit documentation

Independent worker

Cross-team communication

Tools

Infoblox

ServiceNow

Job description

Title: Senior Network Engineer – OT Networks

Location: Hybrid (3 days a week onsite to local office)

The Senior Network Engineer will design, deploy, troubleshoot, and maintain corporate and OT networks, ensuring regulatory compliance, security, and operational excellence. The role demands autonomous project execution, strong technical skills, and support for critical infrastructure in a dynamic environment.

Responsibilities

• Support and maintain network infrastructure within data centers, substations, power plants, and office environments.
• Design, implement, and support wired, wireless, cellular, and OT network solutions.
• Monitor network performance, troubleshoot issues, and optimize network operations across both corporate and OT environments.
• Develop and maintain scripts to automate device configuration, firmware updates, network monitoring, and provisioning workflows.
• Troubleshoot complex, multi-vendor network issues across routing, switching, DDI, and security layers.
• Use network troubleshooting tools such as Wireshark, SolarWinds, and Nessus to diagnose and resolve network problems.
• Assist in the installation, configuration, and ongoing support of network hardware and software, including enterprise DDI/IPAM platforms such as Infoblox for IP address management and DNS/DHCP services.
• Independently scope, plan, and execute network projects, including creating runbooks and checklists as needed.
• Collaborate with security, compliance, and engineering teams to ensure OT network segmentation, access controls, monitoring, and regulatory requirements are met.
• Assist with change management processes and documentation to implement network modifications in accordance with NERC CIP regulations, including understanding and protecting critical data classified under BCSI to prevent non-compliance.

Required Skills

• 8+ years of network engineering experience, with proven expertise in both corporate/enterprise and OT network environments.
• Experience supporting both greenfield and brownfield network projects, from planning through deployment.
• Strong hands-on experience with enterprise routing and switching, including configuration, troubleshooting, and network design principles.
• Proficient in using network troubleshooting tools such as Wireshark, SolarWinds, and Nessus.
• Prior experience supporting utility or critical infrastructure networks is highly desirable.
• Knowledge of DDI/IPAM platforms like Infoblox for managing IP addresses and DNS/DHCP services.
• Good understanding of NERC CIP including BCSI and experience applying them in network design and change management.
• Ability to prepare documentation and runbooks to support audit readiness and compliance requirements.
• Ability to work independently and autonomously in a fast-paced environment supporting critical systems.
• Capability to create scripts (Python, PowerShell, Bash, Ansible) for network provisioning, workflow automation, and operational support.
• Experience supporting regulatory audits, compliance activities, and documenting network changes using tools like ServiceNow (CI/CMDB, change management workflows).
• Comfortable operating in environments with evolving or immature processes, with a focus on building lightweight procedures.
• Excellent written and verbal communication skills, including documentation, change requests, and cross-team coordination.
• This role may require adherence to hybrid work schedules as per organizational policies.