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For more than 40 years, Calian has been solving the world’s most complex problems by pairing the brightest minds with powerful technology. Calian solutions impact the world; from the satellites in space that connect us to the farms that feed us, from the medical professionals who care for us to the governments, schools and companies that make the world better every day.

Position Overview

As part of the Infrastructure Management team, the Network Infrastructure Administrator is responsible for the design, implementation, and support of Calian’s network infrastructure systems. This includes enterprise Wi-Fi, firewall, routing, switching, policy enforcement, and automation across site, data center, and cloud environments. The role requires deep expertise in Fortinet, Cisco Meraki, and Zscaler technologies to ensure secure, high-performance connectivity for both internet and private networks.

The successful candidate will collaborate across Calian Information Technology (IT) and business unit development teams by managing secure network connectivity, optimizing firewall and SD-WAN configurations, and maintaining high availability and disaster recovery capabilities. This position requires a proactive approach to network monitoring, incident resolution, and continuous improvement of network infrastructure.

Responsibilities

• Own and manage enterprise Wi-Fi infrastructure, ensuring optimal performance and coverage across all environments.
• Administer and optimize Fortinet firewalls (FortiGate), VPNs, security policies, and FortiManager configurations.
• Manage and maintain Cisco Meraki infrastructure including switches, wireless access points, and security appliances.
• Administer and support Zscaler cloud security services for secure internet and private connectivity.
• Design and enforce enterprise-wide network policies, including firewall rules, access controls, and compliance standards.
• Monitor and optimize network performance, capacity, and security across hybrid environments.
• Implement and maintain network redundancy and disaster recovery solutions.
• Integrate and support on-premises and cloud-based network services (Azure, AWS).
• Implement network automation and monitoring tools (e.g., FortiManager, Meraki Dashboard, SNMP).
• Collaborate with security teams to enforce network security best practices and compliance.

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