Senior OT Network Architect - Secure Plant Networks

Gtatelecom

Princeton (IN)

On-site

USD 140,000 - 180,000

Full time

14 days+

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Job summary

Gtatelecom in Indiana is seeking a Senior OT Network Engineer to design, deploy, and secure OT networks across industrial environments. You will lead Cisco SD-Access implementation, enforce IDMZ and microsegmentation, and collaborate with IT and plant teams to deliver reliable plant-floor operations.

The role requires deep routing/switching, OT security experience in manufacturing, and strong communication with stakeholders.

Qualifications

10+ years of progressive network engineering experience, or equivalent practical experience.
Hands-on experience with routing, switching, LAN/WAN, and high-availability network environments.
Experience designing or securing OT networks in manufacturing, industrial, or plant-floor settings.
Knowledge of network segmentation, zero-trust principles, and industrial DMZ (IDMZ) design.
Strong communication, problem-solving, and stakeholder collaboration skills.
Bachelor’s degree in a STEM field or equivalent experience.

Responsibilities

Deploy, modernize, and manage OT network infrastructure across industrial environments.
Design secure network architectures using IDMZ, macro-segmentation, and microsegmentation across Purdue Model layers.
Implement Cisco SD-Access to support fabric automation and identity-based access control.
Troubleshoot complex network incidents and coordinate upgrades, cutovers, and maintenance activities.
Partner with IT and plant teams to translate operational needs into secure network solutions.
Mentor local technical teams on OT networking and security fundamentals.