Sr. OT Network Engineer Job Princeton area,Indiana USA,IT/Tech

We are seeking a highly skilled Sr OT Network Engineer to support the design, deployment, and ongoing reliability of Operational Technology network infrastructure in a manufacturing environment. This onsite role serves as a key technical resource and liaison between IT, plant engineering, production engineering, and business stakeholders to ensure OT network solutions are delivered securely, efficiently, and with minimal disruption to operations.
This is meant to be a guide. (Duties may vary dependent upon management.)

The ideal candidate is a hands‑on network professional with strong OT and enterprise networking experience, proven ability to work in industrial environments, and a collaborative approach to supporting both technical teams and non‑technical stakeholders.

Key Responsibilities

Serve as the onsite network technical lead for OT-related initiatives and escalations.
Partner with IT, plant engineering, production engineering, maintenance, and business teams to support network requirements and project delivery.
Lead the deployment, commissioning, and ongoing support of OT network infrastructure.
Support the design and implementation of secure, resilient network architectures for industrial and manufacturing environments.
Ensure OT cybersecurity requirements are incorporated into network solutions, including segmentation, IDMZ, and access control practices.
Troubleshoot and resolve complex network issues impacting plant and production operations.
Provide escalation support for network incidents and coordinate issue resolution with internal teams and vendors as needed.
Assist with network standards, implementation practices, and documentation for OT environments.
Mentor and train local IT support teams and operational staff on OT network fundamentals and troubleshooting.
Contribute to project planning, cutovers, maintenance activities, and operational readiness.
Collaborate with stakeholders to translate business and production requirements into effective network solutions.

Technology Scope

Enterprise LAN/WAN networks
OT / industrial network environments
Network segmentation and secure network design
IDMZ architecture
Firewalls and secure connectivity
VLANs, routing, switching, and redundancy
Network monitoring and troubleshooting
Wireless networking in industrial or manufacturing settings
High availability network design
Support for plant-floor, automation, and edge‑connected systems
Industrial network connectivity and protocols
Remote access and secure support patterns

Required Qualifications

10+ years of progressive network engineering experience.
Experience supporting OT, industrial, or manufacturing network environments.
Strong knowledge of enterprise networking and secure network design.
Demonstrated ability to support onsite operations and collaborate across IT and plant teams.
Experience troubleshooting complex network issues in high‑availability environments.
Strong communication and interpersonal skills, with the ability to work effectively with technical and non‑technical stakeholders.
Experience supporting deployments, maintenance windows, cutovers, and operational support activities.
Ability to train and mentor support personnel and operational teams.
Strong ownership mindset and ability to drive tasks through completion.

Preferred Qualifications

Experience in manufacturing, industrial, or plant‑floor environments.
Familiarity with OT cybersecurity concepts, IDMZ, and segmentation strategies.
Experience with automation, controls, or industrial systems networking.
Background supporting large‑scale OT network deployments or plant modernization efforts.
Experience working with production engineering, maintenance, and operations teams.
Certifications such as CCNA, CCNP, CISSP, or other networking/security…