OT Network Engineer for Critical Infrastructure (Hybrid)

Blue Signal Search; United States; Hybrid; USD 130,000 - 180,000; Full time

Benefits offered by this job

Competitive base salary

Bonus opportunity

Equity participation

Comprehensive benefits

Hybrid work environment

Remote flexibility nationwide

Job summary

Blue Signal Search seeks an experienced Operational Technology Network Engineer to design, implement, and support OT networking for mission-critical facilities in a hybrid San Francisco and nationwide remote environment.

You will collaborate with facilities and controls teams to ensure secure segmentation, reliable connectivity, and scalable architectures while maintaining high availability and cybersecurity alignment.

Qualifications

• Several years of experience in OT, industrial, or critical infrastructure networks.
• Strong knowledge of Ethernet, TCP/IP, VLANs, routing, and security.
• Experience with building automation or process control systems.
• Familiarity with BACnet/IP or similar protocols.

Responsibilities

• Design, implement, and support OT network infrastructure serving critical facility systems.
• Develop secure network architectures supporting building automation, electrical monitoring, and controls.
• Establish repeatable infrastructure rollout practices for reliable growth.
• Configure and maintain network segmentation, firewall policies, routing, switching, and secure remote connectivity.
• Partner with facilities, controls, commissioning, and infrastructure teams throughout lifecycles.
• Monitor network health, troubleshoot, and optimize performance with high availability.
• Assist with cybersecurity initiatives, access controls, and compliance in OT environments.
• Produce technical documentation, standards, diagrams, and procedures.
• Support commissioning activities, upgrades, and operational improvements.

Skills

OT networking

Ethernet TCP/IP

VLANs & routing

Network segmentation

Firewall security

Industrial protocols

BACnet/IP

Cybersecurity practices

Documentation

Collaboration with facilities

Job description

Blue Signal Search seeks an experienced Operational Technology Network Engineer to design, implement, and support OT networking for mission-critical facilities in a hybrid San Francisco and nationwide remote environment.

You will collaborate with facilities and controls teams to ensure secure segmentation, reliable connectivity, and scalable architectures while maintaining high availability and cybersecurity alignment.