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Senior Network Engineer


Mosaic451 is seeking Network Engineer with experience managing, securing and working in mission-critical heterogeneous network environments.  The individual must have hands-on experience configuring routers, switches, and firewalls from Cisco to Juniper, and (ideally) would have experience working with other vendors – specifically Palo Alto.

The individual must have knowledge of TCP/IP protocol fundamentals. The individual must have experience and operational knowledge of the Spanning Tree protocols, the major IP routing protocols (OSPF/BGP), and various transport and VPN technologies (MPLS, GRE, IPSec, DMVPN).

The individual will report to an on-site customer in the Phoenix area and, as such, will need to be professional, hardworking and proactive and must be able to communicate both in writing and verbally.


  • Supports and plans network communications systems for Mosaic451 and its customers.
  • Provides specifications and detailed schematics for network architecture.
  • Provides specific detailed information for hardware and software selection, implementation techniques and tools for the most efficient solution to meet business needs, including present and future capacity requirements.
  • Conducts testing of network design prior to implementation
  • Maintains technical expertise in areas of network interconnection and interfacing, such as routers, multiplexers, firewalls, hubs, bridges, gateways, etc.
  • Evaluates and reports on new communications technologies to enhance capabilities of the network.
  • Works with configuration management to ensure compliance with architecture
  • Strong problem solving skills


  • Individual must have 3-7 years of experience with managing and securing Palo Alto/Juniper/Cisco equipment, including firewalls, switches, routers, and management appliances.
  • Excellent written and oral communication skills
  • Strong analytical skills and demonstrated ability to “think outside-the-box.”


  • Bachelor’s Degree in Computer Science or related field (preferred but not required)
  • CCNA preferred but not required
  • US Citizenship Required
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