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Senior Network Administrator (Evanston, IL)

ZS is a professional services firm that works side by side with companies to help develop and deliver products that drive customer value and company results. From R&D to portfolio strategy, customer insights, marketing and sales strategy, operations and technology, we leverage our deep industry expertise and leading-edge analytics to create solutions that work in the real world. Our most valuable asset is our people—a fact that’s reflected in our values-driven organization in which new perspectives are integral and new ideas are celebrated. ZSers are passionately committed to helping companies and their customers thrive in industries ranging from healthcare and life sciences, to high-tech, financial services, travel and transportation, and beyond.

ZS' Corporate Support teams operate the firm's core internal enterprise functions. Our global teams comprise team-oriented, pragmatic and results-driven people who thrive in a challenging work environment. Our people come from diverse backgrounds, but share a passion for quality customer service and dedication - whether our customer is a client or another ZS employee.

The Information Technology team provides internal information technology solutions and support for ZS, including custom enterprise Web and ERP applications, IT infrastructure and technology support.


We are currently seeking applicants for a skilled IT professional to join our Evanston, IL office.The Network Administrator will be part of a team that manages, monitors, and maintains all networked systems for 24/7 optimal performance, data integrity and security in an enterprise environment.


  • Manage the day-to-day operations of Enterprise and SaaS network infrastructure;
  • Monitor reliability of the network infrastructure and anticipate problems before they occur;
  • Monitor and manage network utilization and performance;
  • Troubleshoot hardware, software, and network related issues, provide quick resolution to problems and participate in finding root causes of issues and may work on action items to prevent future occurrences;
  • Communicate and coordinate maintenance schedule and downtime to users;
  • Install and configure LAN and WAN devices;
  • Cabling network or server devices;
  • Help architect and implement network solutions that meet or exceed our internal and external customers' SLAs and expectations;
  • Be organized and be able to prioritize tasks;
  • Stay current on network technologies;
  • Provide 24/7 on-call support as required for all network and technical issues;
  • IT team projects as assigned.


  • Bachelor's degree with record of high academic achievement;
  • 1-3 years of previous experience in high availability Data Center Infrastructure; SaaS environment experience preferred;
  • Experience with Configuring and Troubleshooting Routing - EIGRP, OSPF, BGP;
  • Experience with Configuring and Troubleshooting Switching - VLANs, VTP, STP, HSRP, QoS Ether-channel;
  • Experience with Configuring and Troubleshooting Cisco ASAs & VPNs;
  • Experience with F5 Load Balancers Preferred;
  • Troubleshooting MPLS circuits (Layer 2 & Layer 3);
  • Experience maintaining SLAs for networks;
  • Eagerness to contribute in a team-oriented environment;
  • Ability to work methodically and analytically in a quantitative problem-solving environment;
  • Excellent leadership, communication and organizational skills;
  • Strong customer service skills;

Technical requirements:

  • Experience in working with compliance and regulatory program requirements;
  • CCNP Routing and Switching certification required;
  • Advanced training and certifications in Cisco Routers, Switches, Firewalls and F5 Load Balancers;
  • Dell networking experience preferred.


ZS is a global consulting firm; fluency in English is required, additional fluency in at least one European or Asian language is desirable. 
Candidates must possess work authorization for their intended country of employment. An on-line application, including a cover letter expressing interest and a full set of transcripts (official or unofficial), is required to be considered.
ZS offers a competitive compensation package with salary and bonus incentives, complete medical/dental/life insurance programs and retirement savings benefits. We are an Equal Opportunity Employer.

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ZS has been recognized globally for its expertise in consulting and its flexible work environment. View ZS’s accolades.


Nearest Major Market: Chicago