Senior OT Network Engineer

BR 100

Princeton IN

Senior OT Network Engineer

Toyota Tsusho Systems US Inc. (TTS-US) Princeton IN

Founded in 2011 Toyota Tsusho Systems US Inc. (TTS-US) is a Toyota Group company that develops IT solutions supporting global business operations. As Toyota continues its transformation into a technology and mobility company TTS-US and its global affiliates play an important role in establishing a secure resilient and innovative global technology ecosystem.

TTS-US is seeking an experienced Senior OT Network Engineer to join its System Solution team in Georgetown Kentucky. This is a hands-on onsite role focused on designing deploying securing and supporting Operational Technology (OT) and enterprise network infrastructure within manufacturing environments.

The successful candidate will serve as a key technical resource and liaison between IT and plant engineering teams ensuring OT network solutions are delivered securely and reliably while minimizing production disruption and unplanned downtime.

The ideal candidate brings 10 years of progressive network engineering experience including significant hands-on experience with OT/industrial networks manufacturing environments network segmentation IDMZ architecture firewalls routing switching and high-availability infrastructure.

• Serve as the onsite network engineering resource for OT-related initiatives.

• Lead the deployment implementation and adoption of OT network infrastructure.

• Design and implement secure resilient network architectures for industrial and manufacturing environments.

• Support plant-floor automation controls and edge-connected systems.

• Participate in network cutovers maintenance activities deployments and operational readiness planning.

• Ensure network implementations minimize disruption to critical manufacturing operations.

• Incorporate OT cybersecurity requirements into network architecture and implementation.

• Implement and support network segmentation IDMZ architecture secure connectivity and access control practices.

• Support firewall configuration and secure communication between enterprise IT and OT environments.

• Apply high-availability and redundancy principles to critical plant network infrastructure.

• Contribute to OT network standards architecture guidance implementation practices and technical documentation.

• Provide escalation support for complex OT and enterprise network incidents.

• Troubleshoot routing switching connectivity wireless firewall and network performance issues.

• Coordinate issue resolution with internal technical teams plant personnel and external vendors.

• Support network monitoring and proactively identify reliability and performance concerns.

• Assist with maintenance windows and after-hours support when required.

• Serve as a liaison between IT plant engineering production maintenance operations and other technical teams.

• Translate manufacturing and production requirements into secure and effective network solutions.

• Provide technical guidance to local IT and operational teams.

• Mentor and train support personnel on OT networking fundamentals standards and troubleshooting.

• Drive assigned initiatives and technical tasks through successful completion.

• Enterprise LAN/WAN networks

• OT and industrial network environments

• Network segmentation and secure network architecture

• IDMZ (Industrial Demilitarized Zone) architecture

• Firewalls and secure connectivity

• VLANs routing switching and redundancy

• Network monitoring and troubleshooting

• Industrial/manufacturing wireless networking

• High-availability network design

• Plant-floor and automation system connectivity

• Edge-connected systems

• Industrial networking and communication protocols

• Bachelors degree in Electrical Engineering Computer Engineering Computer Science or a related field and/or equivalent professional experience.

• 10 years of progressive network engineering experience.

• Demonstrated experience supporting OT industrial plant-floor or manufacturing network environments.

• Strong knowledge of enterprise networking network architecture and secure network design.

• Strong hands-on knowledge of routing switching VLANs firewalls segmentation and network redundancy.

• Experience troubleshooting complex network issues within high-availability or production-critical environments.

• Experience supporting network deployments maintenance windows cutovers and ongoing operational activities.

• Demonstrated ability to collaborate effectively across IT engineering operations and plant teams.

• Ability to train and mentor technical support personnel and operational teams.

• Strong written and verbal communication skills with the ability to work with both technical and non-technical stakeholders.

• Strong ownership and execution skills with the ability to independently drive technical tasks through completion.

• Significant experience within manufacturing automotive industrial or plant-floor environments.

• Knowledge of OT cybersecurity principles including IDMZ and network segmentation strategies.

• Experience supporting automation controls or industrial systems networking.

• Experience with large-scale OT network deployments plant expansions or modernization initiatives.

• Experience collaborating with production engineering maintenance automation and operations teams.

• Experience developing network standards deployment procedures architecture documentation or OT implementation guidelines.

• Relevant certifications such as CCNA CCNP CISSP or comparable networking/security certifications.

• Work Model: 100% Onsite - Georgetown KY

• Employment Type: Contract

• Hours: Standard business hours

• After-Hours Requirements: Occasional after-hours or weekend work may be required for deployments maintenance windows and cutovers.

• Travel: Limited

The ideal candidate is a senior hands-on network engineer with substantial OT and manufacturing experience rather than someone whose background is limited to traditional corporate IT networking. Strong candidates should be comfortable working directly within plant environments and demonstrate expertise across OT networking LAN/WAN routing and switching firewalls segmentation IDMZ industrial connectivity high availability and network troubleshooting.

The role requires someone who can combine deep technical expertise with strong stakeholder management and serve as an effective bridge between enterprise IT and plant/production engineering teams.