Engineer II, OT Infrastructure

ERock (NYSE: EROC) is enabling energy for a new era. ERock delivers onsite utility-grade power that gets customers up and running quickly, while supporting long-term grid development. ERock's proprietary natural gas generators help critical facilities address grid constraints, interconnection delays, and outage risks while accelerating speed-to-power for new and expanding operations. Trusted by data centers, utilities, manufacturers, healthcare systems and government organizations, ERock engineers for rapid deployment, long-duration reliability, low local emissions, and scalable performance to meet the evolving energy demands of today and tomorrow.

As an Infrastructure Engineer II, you will lead the hands-on engineering, configuration, and day-to-day administration of secure, resilient IT, OT, and industrial network and systems infrastructure across ERock's Enterprise Environments, Data Centers, and Distributed Microgrid sites. You will:

• Support secure, reliable infrastructure across ERock's enterprise, data center, and remote microgrid environments.
• Configure and troubleshoot networks and security, including SD-WAN, firewalls, switches, VPN tunnels, and hybrid cloud connectivity.
• Maintain industrial connectivity for SCADA, PLCs, RTUs, and remote monitoring systems.
• Administer VMware, Windows Server, and Active Directory, including provisioning, patching, and maintenance.
• Resolve complex incidents with Helpdesk, Security, OT, and field teams while helping minimize operational disruptions.
• Maintain standards and documentation, including backups, disaster recovery procedures, templates, and runbooks.

Requirements

• Direct hands-on experience configuring, deploying, and troubleshooting Fortinet Forti Gate firewalls, including firewall policies, IPsec/SSL VPNs, NAT, and core security profiles.
• Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent practical experience), along with 5-7+ years of hands-on infrastructure and networking experience.
• Solid hands-on experience configuring, troubleshooting, and administering enterprise networking hardware and protocols, including BGP, OSPF, VLANs, IPsec VPNs, NAT, DNS/DHCP, QoS and routing policy management.
• Working knowledge of industrial networks, including industrial managed switches, ruggedized field gear, and connectivity supporting SCADA and PLC communication.
• Direct working experience administering VMware environments (ESXi, vCenter, VM provisioning, snapshot management, and virtual networking/vSwitches).
• Hands-on system administration experience with Windows Server environments and patch management.
• Experience with implementing network security designs, including stateful inspection, access segmentation, and Zero Trust fundamentals.
• Experience deploying monitoring and alerting tools (e.g., SNMP, Syslog, PRTG, Solar Winds, or Datadog) to proactively detect performance issues and latency spikes.
• Proven track record of managing multi-site deployment projects, coordinating with field technicians, and resolving escalated support tickets.
• Willingness to travel up to 20% (local/regional).
• Ability to lift and carry equipment weighing up to 20 pounds, review schematics and computer screens, and communicate effectively across teams.

• Have hands-on experience with edge-to-cloud IoT systems and the challenges that come with them.
• Have deep hands-on experience architecting distributed IT/OT networks across energy, utilities, oil & gas, industrial, or other mission-critical environments.
• Have designed and secured segmentation strategies aligned to Purdue Model and regulatory standards such as NERC CIP.?
• Bring…