OT Engineer - Manufacturing Systems Infrastructure; Mid-Level

OT Engineer - Manufacturing Systems Infrastructure

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Matrix Technologies, Inc. has been a leading provider of engineering, automation, and systems integration services since 1980. Guided by 'The Matrix Way,' we value teamwork, collaboration, and fun. Recognized as a Top Workplace, we offer flexible schedules, professional growth opportunities, and market-leading compensation. Our expertise spans multiple industries, and 87% of our projects are from repeat clients, showcasing our commitment to quality and customer satisfaction.

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Join our team as an OT Engineer!

This is a hybrid role based out of our Maumee, Ohio office. The position is salaried and includes eligibility for overtime pay.

We are seeking a Mid‑Level OT Engineer to join our Manufacturing Systems Infrastructure (MSI) team. This role focuses on OT (Operational Technology) infrastructure, often described as IT for manufacturing, supporting industrial automation systems in manufacturing environments.

This position includes development of PLC logic or HMI graphics and works closely with Controls and Industrial Systems engineers to design and deliver the infrastructure platforms that support control system automation. This role is part of a system integrator organization and involves hands‑on design, deployment, and support of OT network, computing, and application infrastructure for client facilities.

• Assess, design, and implement OT Ethernet networks
• Configure switches, firewalls, routers with VLANs, routing boundaries, firewall rules, and access policies
• Support industrial DMZ architectures and secure remote access solutions
• Troubleshoot OT network connectivity, performance, and reliability issues

• Design, configure, and deploy OT computing platforms, including:
  • Physical and virtual servers
  • Engineering and operator workstations
  • Thick and thin HMI clients
  • Remote Desktop and terminal server architectures
• Support OT domains and Active Directory‑based environments, including authentication and policy configuration
• Configure supporting services such as storage, backup, monitoring, and time services
• Assist with platform standardization and lifecycle planning

• Design, configure, and deploy OT application infrastructure, including:
  • HMI/SCADA platforms
  • Process Data Historians, Batch Servers, Asset Management
  • Supporting applications such as databases, spreadsheets, SQL Server‑based OT applications
• Support redundancy, performance, and availability requirements
• Coordinate with Controls and Industrial Systems engineers to ensure infrastructure aligns with application requirements

• Own defined technical scopes or smaller projects
• Translate client requirements into infrastructure designs using established standards
• Participate in design reviews, commissioning activities, and post‑startup support
• Communicate technical designs and tradeoffs clearly to clients and project teams
• Provide technical input to project managers for scheduling and estimating

• Produce and maintain network diagrams, build and configuration documents, and as‑built documentation
• Follow established MSI standards and contribute improvement recommendations
• Support internal testing and verification activities

• Bachelor’s degree in Engineering, Information Technology, or equivalent practical experience
• 3–5 years of experience supporting OT or industrial infrastructure environments
• Experience with:
  • OT or industrial Ethernet networks
  • Computing platforms used in manufacturing systems
  • Virtualized environments (Hyper‑V, VMware, or similar)
  • Active Directory or domain‑based OT environments
  • Ability to work independently within defined standards
  • Strong troubleshooting and documentation skills
  • Willingness to work in manufacturing and industrial environments

• Experience working for a system…