OT Network Engineer - Critical Infrastructure Hybrid/Remote

Blue Signal Search; San Francisco (CA); Hybrid; USD 120,000 - 150,000; Full time

Benefits offered by this job

Base salary + bonus

Equity participation

Hybrid work environment

Remote flexibility nationwide

Career growth

Job summary

Blue Signal Search in San Francisco combines hybrid work with nationwide remote flexibility to expand its Operational Technology Infrastructure Engineering team. The role focuses on designing, implementing, and supporting OT networks across mission critical facilities, with direct impact on reliability, security, and scalability of HPC and related initiatives.

You will partner with facilities, controls, and infrastructure engineers, define network standards, monitor health, troubleshoot issues,

Qualifications

• Several years of experience designing and supporting OT or critical infrastructure networks.
• Strong understanding of Ethernet, TCP/IP, VLANs, routing, switching, and security.
• Experience with building automation, industrial controls, or facility systems.
• Knowledge of industrial protocols such as BACnet/IP.
• Ability to collaborate with controls, facilities, and infrastructure teams.
• Experience with network monitoring and performance optimization.

Responsibilities

• Design, implement, and support OT network infrastructure for critical facilities.
• Develop secure network architectures for building automation and industrial controls.
• Establish repeatable rollout practices across distributed sites.
• Configure segmentation, firewall policies, routing, switching, and secure remote access.
• Monitor health, troubleshoot connectivity, and optimize performance.
• Produce documentation and implementation standards.
• Support commissioning, upgrades, and operational improvements.

Skills

OT networking

Industrial protocols

Firewall & security

LAN/WAN design

Troubleshooting

Documentation

Job description

Blue Signal Search in San Francisco combines hybrid work with nationwide remote flexibility to expand its Operational Technology Infrastructure Engineering team. The role focuses on designing, implementing, and supporting OT networks across mission critical facilities, with direct impact on reliability, security, and scalability of HPC and related initiatives.

You will partner with facilities, controls, and infrastructure engineers, define network standards, monitor health, troubleshoot issues,