Network Administrator

Description
This position is primarily focused on the day-to-day support, administration, optimization, and troubleshooting of a large enterprise Cisco-based network environment. Approximately 80-90% of the role will be dedicated to operational support, maintenance, and implementation activities, with 10-20% focused on project participation and network enhancements.
The ideal candidate will possess strong experience supporting Cisco networking technologies and be comfortable working across routing, switching, wireless, firewall, SD-WAN, and network security environments.
Essential Job Duties and Responsibilities
Network Operations & Support
Provide day-to-day administration, support, monitoring, and troubleshooting of a multi-site global enterprise network environment.
Support WAN, LAN, VLAN, SD-WAN, wireless, internet connectivity, and remote access services.
Diagnose and resolve network-related incidents utilizing established operational procedures and best practices.
Monitor network health, availability, capacity, and performance using enterprise monitoring tools.
Participate in production support activities, root cause analysis, issue resolution, and documentation efforts.
Manage and maintain network infrastructure across corporate offices, manufacturing facilities, and remote locations.
Collaborate with infrastructure, security, server, cloud, and application teams to resolve cross-functional issues.
Cisco Infrastructure Support
Federal Signal operates as an all-Cisco networking environment. Candidates should have experience supporting and troubleshooting Cisco-based networking infrastructure including:
Cisco routing and switching technologies.
Cisco Catalyst switching platforms.
Cisco wireless environments utilizing Cisco 9800 Wireless LAN Controllers.
Cisco Catalyst SD-WAN (formerly Viptela).
Cisco firewall technologies including Cisco Firepower Threat Defense (FTD).
Integrated security services within Cisco SD-WAN environments.
Cisco network management and monitoring solutions.
Network Security
Support and maintain network security controls and technologies.
Troubleshoot connectivity issues involving firewalls, VPNs, security policies, and segmentation.
Assist with the implementation and support of network access control and Zero Trust initiatives.
Maintain understanding of firewall concepts including:
Access control policies, NAT, VPN technologies, Security zones, Threat prevention capabilities
Collaborate with cybersecurity teams to support compliance and security improvement initiatives.
Project Participation
Participate in infrastructure modernization initiatives and technology refresh projects.
Assist with network implementations, upgrades, migrations, and deployment activities.
Contribute operational expertise to architecture and design discussions when required.
Develop and maintain technical documentation, operational procedures, and network diagrams.

Upcoming Strategic Initiatives
Cisco Identity Services Engine (ISE) deployments
Network micro-segmentation projects
Zero Trust Network Access (ZTNA) implementations
802.1X authentication initiatives
Enterprise wireless hardware refresh programs
DDI (DNS, DHCP, IPAM) redesign efforts
Cloud redundancy and resiliency redesign initiatives
Network security modernization projects
Global infrastructure optimization efforts
Job Type & Location
This is a Contract to Hire position based out of Downers Grove, IL.
Pay and Benefits
The pay range for this position is $50.00 - $60.00/hr.
Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:
Medical, dental & vision
Critical Illness, Accident, and Hospital
401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available
Life Insurance (Voluntary Life & AD&D for the employee and dependents)
Short and long-term disability
Health Spending Account (HSA)
Transportation benefits
Employee Assistance Program
Time Off/Leave (PTO, Vacation or Sick Leave)
Workplace Type
This is a hybrid position in Downers Grove,IL.
Final date to receive applications
This position is anticipated to close on Jul 28, 2026.

About TEKsystems

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change.

That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic…