Network Security Administrator III; Firewall

Iridium is an award-winning satellite communications company operating the world's only truly global voice and data network, delivering reliable connectivity anywhere on Earth. For more than 20 years, Iridium has powered mission-critical communications for governments, businesses, aviation, maritime, and the rapidly expanding Internet of Things.

Now part of Iridium, Aireon is the world’s only space-based air traffic surveillance system, providing real-time visibility of aircraft over oceans, the poles, and remote regions. Together, Iridium and Aireon are helping build a safer, more connected, and more efficient future for global aviation.

Join our team and help shape how the world stays connected. We foster a collaborative, inclusive culture where employees are empowered to innovate, grow professionally, and make a meaningful impact.

Iridium is looking for an experienced Network Security Administrator to help manage and support our network security environment. This is a hands-on role focused primarily on firewall administration, secure connectivity, network segmentation, VPNs, and the day-to-day operation of our security infrastructure. This position is responsible for understanding how traffic moves through a network to effectively work with enterprise firewalls to troubleshoot beyond the firewall itself, including routing, NAT, security policies, VPNs, and authentication to figure out why something isn’t working.

This role requires someone to take ownership of their work, approach changes carefully, and follow problems through to resolution. The Network Security Administrator III will work independently on many tasks, but will also be part of a team and collaborate often with network, systems, security, and other technical groups to get things done.

• Deploy, configure, administer, maintain, and troubleshoot enterprise firewall and network security platforms, including technologies from Fortinet, Check Point, Palo Alto Networks, and Cisco
• Manage firewall policies, NAT, network objects, security zones, routing, segmentation, VPN connectivity, and other network security controls following least-privilege principles
• Administer centralized firewall management, logging, and analytics platforms and monitor the health, availability, capacity, and performance of network security infrastructure
• Troubleshoot complex network security and connectivity issues using firewall logs, packet captures, traffic-flow analysis, routing and session information, and other diagnostic tools
• Maintain the reliability and security of firewall platforms through software upgrades, high-availability testing, configuration backups, lifecycle maintenance, and ongoing policy review and optimization
• Develop and maintain network security documentation, including diagrams, configuration standards, operating procedures, implementation plans, troubleshooting guides, and recovery procedures
• Participate in formal change-management processes, including peer review, implementation and rollback planning, validation testing, and post-change verification
• Support projects involving new or upgraded network security technologies and collaborate with other technical teams to evaluate, implement, and transition solutions into operational support

• Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or a related field, or equivalent relevant professional experience in lieu of a degree
• 5+ years of experience in network security, network administration, network engineering, or firewall administration
• Hands-on experience administering enterprise firewall technologies such as Fortinet, Check Point, Palo Alto Networks,…