✦ Luna Orbit — Cybersecurity

Sr CI/OT Architect

at Delek US Holdings

📍 Tyler, TX, US, 75702 Unknown Posted April 11, 2026
Type Not Specified
Experience senior
Exp. Years 6+ years
Education Bachelor's Degree (4 year) or equivalent combination of education and experience
Category Cybersecurity

Own OT architecture and lifecycle governance across refinery environments as a CI/OT Architect. Define standards, provide technical design authority, and ensure secure, consistent OT system implementations across sites while bridging IT, engineering, and operations.

  • Establish OT architecture ownership and lifecycle governance
  • Define standards and provide technical design authority
  • Design OT/industrial networking with Cisco switching/routing and segmentation strategies
  • Configure and manage Palo Alto and Cisco firewalls in secure OT environments
  • Bridge IT, engineering, and operations to maintain cross-site alignment

Leads industrial networking architecture efforts with deep Cisco switching/routing and network design expertise, including segmentation strategies. Hands-on firewall management in secure OT environments using Palo Alto and Cisco firewalls, ensuring consistent lifecycle management for critical OT infrastructure.

The ideal candidate is a senior CI/OT Architect with 6+ years of extensive industrial networking experience, including Cisco switching/routing, network design, and segmentation strategies. They are hands-on with Palo Alto and Cisco firewalls in secure OT environments and can establish enterprise OT architecture ownership and lifecycle governance across refinery sites. They may also hold preferred security/architecture certifications such as CISSP and TOGAF.

industrial networkingincluding Cisco switching/routingnetwork designand segmentation strategiesSix (6) or more years Extensive experience with industrial networkingHands-on experience configuring and managing Palo Alto and Cisco firewalls in secure OT environments
CISSPGICSPCCNP/ PCNSETOGAFvendor-specific control system certifications
CiscoPalo Alto
Operational Technology (OT) architectureOT lifecycle governanceenterprise ownershiptechnical design authorityindustrial networkingCisco switching/routingnetwork designsegmentation strategiesPalo Alto firewallsCisco firewallssecure OT environmentslifecycle managementcross-site alignment
Operational Technology (OT) architectureOT architecture lifecycle governanceindustrial networkingCisco switching/routingnetwork designsegmentation strategiesindustrial networkingnetwork segmentationHands-on configuring and managing Palo Alto firewallsCisco firewallssecure OT environmentscross-functional leadership
technical design authorityleadershipcross-functional collaborationcross-site alignmentcommunication

Preferred

CISSP (Certified Information Systems Security Professional)GICSP (GIAC Global Industrial Cyber Security Professional)CCNP/PCNSE (Cisco Certified Network Professional / Professional Security (or Cybersecurity) and specific designation as written: PCNSE)TOGAF (The Open Group Architecture Framework)
Industry Energy
Job Function Architect and govern secure Operational Technology (OT) architecture and lifecycle for refinery environments
Role Subtype Security Architect
Tech Domains Cybersecurity, Cisco Networking, Networking / TCP-IP
Sr CI/OT ArchitectCI/OT ArchitectOperational Technology (OT) architectureOT architecture lifecycle governanceenterprise ownershiptechnical design authoritysecure OT environmentsindustrial networkingCisco switching/routingnetwork designsegmentation strategiesPalo Alto firewallsCisco firewallsnetwork segmentationcross-site alignmentlifecycle managementOT systemscritical OT infrastructureCI/OTrefiningoil & gaspetrochemicalprocess industriescross-functionalPalo Alto

4 year / Bachelor's Degree (Required), Six (6) or more years Extensive experience with industrial networking, including Cisco switching/routing, network design, and segmentation strategies. (Required), Hands-on experience configuring and managing Palo Alto and Cisco firewalls in secure OT environments.

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