Senior Systems Engineer

Leonardo Electronics US Inc • Arizona, Tucson • Posted July 05, 2026

About the Role

About the Role

Leonardo Electronics US Inc. is seeking a hands-on Sr. Systems Engineer to manage network and cloud infrastructure for a growing defense technology company operating across 2-3 sites in Tucson, AZ. You'll be the go-to technical expert for our Cisco Meraki environment and Microsoft Azure GCC High tenant - two domains you'll own end-to-end, not just support. If you're the kind of engineer who prefers accountability and breadth over narrow specialization, this role was built for you.

What You'll Do

Network Infrastructure

  • Own the full Cisco Meraki environment (MX, MS, MR) - firewall rules, VPN, VLAN segmentation, SD-WAN, wireless, and IDS/IPS - and serve as the organization's Meraki SME.
  • Manage DNS, DHCP, and internet circuit providers; maintain ISP relationships, circuit diversity, and failover to keep the business running.
  • Apply Zero Trust principles across the network - microse...