OT Network & Systems Administrator (PLC/SCADA)

SMC; Noblesville (IN); On-site; USD 65,000 - 90,000; Full time

Job summary

SMC in Noblesville, Indiana, is seeking an OT Network Administrator to support the Operations Division by managing OT/IT infrastructure across manufacturing and warehouse facilities.

You will liaise between OT operations and IT teams, review network technologies, troubleshoot issues, and coordinate changes to AD, backups, firewalls, switches, SQL servers, and VMware to minimize production impact. This role also involves hands-on maintenance of HMI/PLC/SCADA systems and requires on-call readiness.

Qualifications

• Associate degree in Computer Science or IT, or equivalent work experience.
• Understanding of ITSM Principles or ITIL4 Foundations.
• Proficient knowledge of operating systems, network systems and IT architecture.
• Experience with Windows systems administration.
• Experience with VMWare, vSphere environments.
• Familiarity with DMZs, firewalls, DNS, IPAM, NTP, and VPN concepts.

Responsibilities

• Assist with managing, maintaining, and supporting the OT/IT network infrastructure and related components.
• Act as liaison between the SMC Operational Division and IT teams.
• Review and recommend network-related hardware and software technologies, designs, and services.
• Troubleshoot and resolve network, application, and system issues.
• Coordinate changes to IT processes and systems (AD, backups, firewalls, switches, SQL servers, VMware) to minimize production impact.
• Support current and legacy computer systems in OT environment.
• Respond to equipment downtime issues and coordinate outside resources as needed.
• Organize and schedule upgrades and maintenance without interrupting production.
• Support technologies such as HMI, PLC, and SCADA.
• Other duties as assigned.

Skills

Windows administration

Active Directory Group Policy

ITIL4 Foundations

Network troubleshooting

SaaS concepts (IDM, MFA, M365)

WAN/LAN concepts

DNS/IPAM/NTP

Firewall concepts

VMware / vSphere

SQL Server

Excellent communication

Education

Associate degree in Computer Science / Information Technology or relevant work experience

Tools

VMware / vSphere

MS SQL Server

Active Directory

M365

Job description

SMC in Noblesville, Indiana, is seeking an OT Network Administrator to support the Operations Division by managing OT/IT infrastructure across manufacturing and warehouse facilities.

You will liaise between OT operations and IT teams, review network technologies, troubleshoot issues, and coordinate changes to AD, backups, firewalls, switches, SQL servers, and VMware to minimize production impact. This role also involves hands-on maintenance of HMI/PLC/SCADA systems and requires on-call readiness.