Industrial OT Systems & Infrastructure Specialist

HF Sinclair Corporation; Dallas (TX); On-site; USD 90,000 - 130,000; Full time

Job summary

HF Sinclair Corporation seeks an OT System & Infrastructure Specialist to support fleet-wide OT infrastructure across multiple sites, including Dallas, TX and others. The role covers administration, troubleshooting, backups, patching, and project support for OT servers, endpoints, virtualization, networks, and industrial control systems.

You will work with refinery operations, IT, vendors, and site stakeholders, reporting to the OT Infrastructure & Cybersecurity Lead, contributing to security

Qualifications

• Experience administering Operational Technology infrastructure across fleets.
• Familiarity with ICS/SCADA environments (e.g., Honeywell Experion PKS/FTE, Foxboro, Siemens).
• Ability to coordinate with refinery operations, IT, vendors, and site stakeholders.

Responsibilities

• Administer, maintain, and support OT infrastructure across fleet locations.
• Provide advisory and hands-on support for OT infrastructure and fleet standards.
• Implement lifecycle management, patching, baseline configurations, and DR procedures.

Skills

OT infrastructure expertise

Network administration

System hardening

Patch management

Disaster recovery planning

Tools

OT infrastructure platforms

Industrial Control Systems (ICS)

Firewalls

Job description

HF Sinclair Corporation seeks an OT System & Infrastructure Specialist to support fleet-wide OT infrastructure across multiple sites, including Dallas, TX and others. The role covers administration, troubleshooting, backups, patching, and project support for OT servers, endpoints, virtualization, networks, and industrial control systems.

You will work with refinery operations, IT, vendors, and site stakeholders, reporting to the OT Infrastructure & Cybersecurity Lead, contributing to security