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Location: Englewood, CO
Job Type: Contract to Hire
Job Code: JPC - 224

Job Description

Job Title: Staff Systems Administrator

Location: US-CO-Englewood

Positions: 1


Max Salary: up to 137K



Zscaler Proxy and Network Administration: 

  • Primary responsibilities will be the support, troubleshooting, and administering of Zscaler network proxies.
  • Will perform day to day tasks for moves, adds, changes, and updating proxy rule sets
  • Be primary resource for troubleshooting including engaging with end users and providing leadership on outage bridges
  • Monitor Zscaler platform services and processes
  • Document setup and maintain as built drawings as changes are made
  • Supporting Zscaler products like Client Connector (aka ZAPP) and Virtual ZENs
  • Maintain GRE tunnels to four Zscaler endpoints
  • Work with network security team to administer Zscaler PAC files
  • Practical experience related to LAN, WAN, WLAN, VLAN, DMVPN, VPN, and high-availability/multipath/redundant routers, switches and firewalls in large data center environment
  • Support network protocols such as: BGP, OSPF, EIGRP, HSRP, VLAN, TCP/IP, MPLS, STP, IPv4, sub-netting, routing
  • Familiarity with these technologies is a plus:  Cisco ASA, Palo Alto firewalls, Cisco ISE, networking for F5 LTM/GTM, and networking for IPS/IDS
  • General technical knowledge of Cisco networking technologies and platforms to include Nexus, ASR, ISR, Catalyst, ACI/APIC


Project Implementation:

  • Provide advanced technical leadership for complex project work
  • Supply advanced technical direction and leadership to the junior members of the data networking team
  • Work with various teams to gather requirements, create specifications, and design solution for projects
  • Provide hands-on implementation and ongoing care and maintenance
  • Develop implementations in lab environment to prove out design specifications according to a test and validation plan
  • Maintaining daily operational responsibility for reliability of the company enterprise network and proxies
  • Monitors ongoing availability of network services and processes via tools such as Solarwinds Orion and Cisco Prime Infrastructure applications



  • Follow necessary processes to ensure enterprise network systems and services meet an operational uptime of 99.95%
  • Conducts advanced enterprise-level performance tuning as well as network performance audits on a regular basis
  • Maintaining daily operational responsibility for reliability of the company corporate network
  • Conducts advanced enterprise-level performance tuning as well as network performance audits on a regular basis
  • Monitors ongoing availability of network services and processes.
  • Extensive knowledge on Cisco routers, firewall, and switches (Cisco IOS, IOS-XE, NX-OS)
  • Validate that customer network configurations are functioning per designs by validating log flows, event threshold settings, and alarm notification settings



  • Bachelor’s degree in Computer Science, Computer Engineering or related technical degree; six to eight years as a data network specialist in a medium to large enterprise network; or equivalent combination of education and experience.
  • Extensive knowledge of Zscaler network proxies
  • Advanced knowledge of network monitoring and performance tools such as SolarWinds Orion NPM, Cisco Prime Infrastructure, Wireshark, etc.
  • Strategic thinker, strong interest and aptitude in collaborative big picture, enterprise-wide network infrastructure roadmaps.
  • A commitment to improving processes and to customer satisfaction.
  • Excellent written and verbal communication skills.
  • Results oriented team player who will work towards meeting team commitments and ability to work within a cross-functional team.
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