Note: The job is a remote job and is open to candidates in USA. Talisman is a leading renewable energy operator seeking a Senior Firewall Engineer to design, implement, and maintain secure network perimeters across wind, solar, and battery storage facilities. This role involves working closely with the Cybersecurity Manager and Compliance teams to ensure NERC CIP compliant OT network security across all sites and control centers.

Responsibilities

• Design and implement OT network security controls including firewalls, VPNs, network segmentation, and WAFs for wind, solar, and BESS environments
• Administer Cisco (ASA/Firepower/FTD) and Check Point platforms including policy management, NAT, routing, and HA configurations
• Monitor and respond to security events using SIEM/SOAR, IDS/IPS, and packet analysis tools
• Own firewall-related NERC CIP controls (CIP-005, CIP-007, CIP-010) including configuration baselines, evidence collection, and audit support
• Manage vendor and contractor access for OT maintenance and commissioning activities
• Coordinate change windows with grid operations to ensure plant reliability and uptime

Skills

• 5+ years administering enterprise firewalls and VPNs; NERC CIP familiarity
• 10+ years with deep Cisco and Check Point expertise; proven NERC CIP implementation in Medium Impact environments
• Experience with OT protocols (DNP3, Modbus, OPC) and SCADA/EMS environments
• Bachelor's degree in Computer Science, Electrical Engineering, Information Security, or equivalent
• Cisco CCNP Security or Check Point CCSA/CCSE certifications preferred

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