Network Engineer

Location: Indianapolis, IN

Work Model: On-site

Travel: Two weeks per month to Greensburg, IN, and Lapeer, MI

Job Overview

We are looking for an experienced OT Network Engineer to design, implement, maintain, and secure industrial network infrastructure within a manufacturing environment.

The ideal candidate will have hands-on experience with industrial networking, Ethernet switches, Cisco or Fortinet networking equipment, and connectivity between manufacturing systems such as PLCs and SCADA.

This is a hands-on, plant-floor position that involves working closely with Automation Engineers, IT teams, and Information Security to maintain reliable production networks, minimize downtime, and support digital manufacturing initiatives.

The role involves approximately 60% implementation and new project delivery and 40% network operations and support.

Key Responsibilities

• Design, configure, deploy, and maintain industrial network infrastructure, including switches, routers, firewalls, wireless networks, and VPNs.
• Monitor network performance, troubleshoot connectivity issues, and minimize production downtime.
• Support reliable communication between PLCs, SCADA systems, industrial machines, and other automation equipment.
• Configure and troubleshoot industrial Ethernet switches and network devices.
• Implement network segmentation using the Purdue Model, particularly Levels 2–4.
• Manage VLANs, firewall configurations, network security, hardware patching, and device backups.
• Support OT/IT integration and secure remote access to industrial systems.
• Assist with network upgrades, migrations, and new industrial technology deployments.
• Collaborate with automation, IT, cybersecurity, and external vendor teams.
• Maintain network diagrams, configuration records, and technical documentation.
• Follow industrial cybersecurity standards and security best practices.

Required Qualifications

• Bachelor's degree in Computer Science, Engineering, Information Technology, or a related field.
• Hands-on experience supporting networks in a manufacturing or industrial environment.
• Strong understanding of OT networking and industrial Ethernet.
• Experience configuring, deploying, and troubleshooting industrial switches.
• Solid knowledge of routing, switching, VLANs, firewalls, VPNs, and network security.
• Experience with Cisco or Fortinet networking and security platforms.
• Understanding of the Purdue Model and OT/IT network integration.
• Familiarity with PLCs, SCADA, ICS, and industrial automation equipment.
• Working knowledge of industrial protocols such as Modbus, PROFINET, OPC, CIP, or DNP3.
• Understanding of OT network segmentation and secure remote access.
• Strong troubleshooting, communication, and documentation skills.

Preferred Qualifications

• Experience with ISA/IEC 62443 and NIST cybersecurity frameworks.
• Experience with Cisco Industrial Ethernet, Firepower, Catalyst Center, or Cyber Vision.
• Experience with Fortinet FortiGate, FortiSwitch, or FortiNAC.
• Familiarity with OT network monitoring and visibility tools.
• Certifications such as CCNA, CCNP, or Fortinet NSE.

Work Location and Travel

• Primary Location: Indianapolis, Indiana.
• Work Arrangement: On-site at the manufacturing facility.
• Travel Requirements: Two weeks per month, including one week in Greensburg, Indiana, and one week in Lapeer, Michigan.