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Senior Network Engineer

Job in Downers Grove, DuPage County, Illinois, 60516, USA
Listing for: Illinois Tollway
Full Time position
Listed on 2026-02-07
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer
  • Engineering
    Cybersecurity, Systems Engineer
Job Description & How to Apply Below

Join to apply for the Senior Network Engineer role at Illinois Tollway

Join to apply for the Senior Network Engineer role at Illinois Tollway

This range is provided by Illinois Tollway. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$/yr - $/yr

Position Overview

The Illinois Tollway is dedicated to providing and promoting a safe and efficient system of highways while ensuring the highest possible level of service to our customers. Whether it's I-PASS, the Move Illinois Program, open road tolling or keeping you safe with our H.E.L.P. trucks, we are committed to delivering great benefits and services to customers.

The Tollway is a user-fee system – no state or federal tax dollars are used to support maintenance and operations. Operations are funded by toll and concession revenues.

Under the leadership of the Board of Directors and Executive Staff, the Tollway is committed to achieving the following goals: increase collaboration with regional transportation and planning agencies, promote the regional economy, maintain financial integrity, foster environmental responsibility and sustainability, maintain the safety and efficiency of the Tollway system, further transparency and accountability, enhance customer service, and maintain public trust.

In support of this mission, the Senior Network Engineer will participate in installing, configuring, monitoring, and troubleshooting network infrastructure equipment, telecommunication systems and network security infrastructure. This position reports to the Tollway IT Network Manager.

Essential Job Functions

The Senior Network Engineer builds and maintains the network infrastructure that supports the day to day business operations of the Tollway. This position is also responsible for providing end user technical support and assistance. This position will work primarily at HQ and occasionally at field sites on the Tollway that contain network hardware and software.

Principle Accountabilities

  • Troubleshoot and correct complex network problems, outages, and security threats.
  • Manage, monitor, and maintain network equipment and security infrastructure.
  • Upgrade network hardware and software components as required.
  • Design, implement, configure and secure, new and emerging technologies.
  • Respond to the needs and questions of users for general technical support, access, resources, and security.
  • Monitor computer programs that control user access to the ISTHA network.
  • Perform complex technical analysis of software. hardware. and network systems firewalls, access networks, LAN/WAN communications, and wireless communications. and various transmission systems to determine vulnerabilities and develop mitigation plans to address them.
  • Document root cause for network issues.
  • Coordinate installation of security operating system software and hardware, test, maintain, document and modify configurations.
  • Work with the development and systems integration group to ensure all proprietary and third-party applications are properly integrated within the ISTHA network and security structure.
  • Document all steps taken to modify systems and all procedures required to implement changes to the network and security hardware and software, following all related Change Control policies and procedures.
  • Follow Tollway defined processes including SLA requirements, ticket updates and acknowledging network alarms.
  • Create and maintain network infrastructure documentation and diagrams.
  • Conduct feasibility studies for strategic and tactical plans, design of networks, and evaluation of network security services/technology for current and future network development.
  • Validate attacks against the network, assess overall impact, and act to eliminate identified threats and prevent future incidents.
  • Other duties as assigned

This position will challenge the following skill sets:

  • Hands-on installation, configuration and maintenance of network routers, L2/L3 switches and security equipment
  • Copper and fiber optic structured cabling systems.
  • Advanced Network Engineering and troubleshooting.
  • Switching technologies such as VLANS, Trunking, VTP and STP.
  • Significant knowledge of…
Position Requirements
10+ Years work experience
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