Engineer II, OT Infrastructure

Enchanted Rock Management • Houston, TX

1d

About The Position

As an Infrastructure Engineer II, you will lead 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. The role supports reliable infrastructure, industrial connectivity, virtualization, Windows systems, network security, incident response, and operational documentation. You will work with Helpdesk, Security, OT, and field teams to resolve complex incidents and help minimize operational disruptions. Travel of up to 20% (local/regional) is required.

ERock delivers onsite utility-grade power through proprietary natural gas generators for critical facilities, including data centers, utilities, manufacturers, healthcare systems, and government organizations.

Requirements

• Bachelor’s degree in Computer Science, Information Technology, or a related field, or equivalent practical experience.
• 5–7+ years of hands-on infrastructure and networking experience.
• Direct hands-on experience configuring, deploying, and troubleshooting Fortinet FortiGate firewalls, including firewall policies, IPsec/SSL VPNs, NAT, and core security profiles.
• 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, including ESXi, vCenter, VM provisioning, snapshot management, and virtual networking/vSwitches.
• Hands-on Windows Server administration and patch management experience.
• Experience implementing network security designs, including stateful inspection, access segmentation, and Zero Trust fundamentals.
• Experience deploying monitoring and alerting tools such as SNMP, Syslog, PRTG, SolarWinds, or Datadog to detect performance issues and latency spikes.
• Proven experience managing multi-site deployment projects, coordinating with field technicians, and resolving escalated support tickets.
• Willingness to travel up to 20% locally or regionally.
• Ability to lift and carry equipment weighing up to 20 pounds, review schematics and computer screens, and communicate effectively across teams.

Nice To Haves

• Hands-on experience with edge-to-cloud IoT systems and their associated challenges.
• Deep hands-on experience architecting distributed IT/OT networks across energy, utilities, oil and gas, industrial, or other mission-critical environments.
• Experience designing and securing segmentation strategies aligned with the Purdue Model and regulatory standards such as NERC CIP.
• Expert-level experience with Fortinet, Cisco, and/or Palo Alto architecture.
• Experience modernizing legacy environments to reduce technical debt while increasing resiliency and compliance alignment.
• Strong routing expertise in BGP, DMVPN, and IPsec, and understanding of high-availability connectivity across unreliable or remote infrastructure.
• Comfort owning architecture standards, reviewing designs, mentoring engineers, and acting as an escalation authority.
• Advanced certifications such as CCNP, CISSP, CISM, Fortinet NSE/FCNSP, or PCNSE.
• Experience in utility, energy, industrial, or OT environments.
• Familiarity with Modbus TCP, DNP3, industrial switches, fiber, and redundant network topologies.
• Experience with Azure networking and hybrid identity.

Responsibilities

• 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 infrastructure standards and documentation, including backups, disaster recovery procedures, templates, and runbooks.
• Coordinate multi-site deployment projects with field technicians and resolve escalated support tickets.

Benefits

• Competitive pay
• Medical, dental, vision, and prescription drug insurance
• Company-paid life insurance
• Flexible Spending Account (FSA)
• Health Savings Account (HSA) with a company contribution
• Wellness programs and incentives
• 401(k) retirement plan and company match
• Paid time off, including sick and vacation time
• Paid holidays

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level