Sr. OT Network Engineer (Liberty, NC)

NextGen | GTA: A Kelly Telecom Company

Liberty (NC)

On-site

USD 120,000 - 180,000

Full time

25 hours ago

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Job summary

NextGen | GTA: A Kelly Telecom Company is seeking a Senior OT Network Engineer to design, deploy, and secure OT networks across manufacturing environments. You will implement IDMZ, segmentation, and zero-trust principles to safeguard plant-floor operations.

You’ll lead fabric automation with Cisco SD-Access and collaborate with IT and plant teams to translate operational needs into robust network solutions. A strong background in OT security and network design is required.

Qualifications

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

Responsibilities

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

Skills

10+ years exp

Routing & Switching

LAN/WAN

OT network design

Segmentation IDMZ

Zero‑trust

Stakeholder comms

STEM degree

Education

Bachelor's in STEM

Tools

Cisco SDA

DNA Center

Cisco ISE

Industrial IDMZ

Job description

Design and strengthen the networks that keep industrial and manufacturing environments connected and secure. As a Senior OT Network Engineer, you’ll deliver and maintain operational technology infrastructure, apply network segmentation and zero-trust principles, and help ensure resilient plant-floor operations.

Required Skills & Experience

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.

Desired Skills & Experience

Experience implementing Cisco SD‑Access (SDA), DNA Center/Catalyst Center, and Cisco ISE.
Familiarity with microsegmentation, identity‑based access policies, or software‑defined firewalls.
Experience with industrial wireless, next‑generation firewalls, or high‑availability design.
Familiarity with industrial protocols such as EtherNet/IP or Modbus.
Active certifications such as CCNP, CCIE, CISSP, or GICSP.

What You Will Be Doing

Deploy, modernise, 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.

Tech Breakdown