Network Engineer II
Chicago Transit Authority•Chicago, IL
•$95,500 - $111,500•Hybrid
About The Position
Under general supervision, installs, configures, administers, monitors, and maintains the Authority's enterprise network infrastructure. Provides advanced technical support for network systems by troubleshooting hardware, software, and connectivity issues; assists with network upgrades and infrastructure projects; and ensures the reliability, security, and performance of the Authority's network environment.
Requirements
- Bachelor’s degree in information technology, Computer Science, Electrical Engineering, or a related field, plus three (3) years of experience installing, configuring, administering, and maintaining enterprise network infrastructure, or an equivalent combination of education and experience relating to this position.
- Experience supporting enterprise routing, switching, wireless, firewall, and WAN technologies required.
- Cisco Certified Network Associate (CCNA) certification or equivalent vendor certification required.
- Detailed knowledge of TCP/IP networking architecture and principles.
- Detailed knowledge of routing protocols including EIGRP, OSPF, and BGP.
- Detailed knowledge of VLANs, spanning tree, link aggregation, DHCP, DNS, SNMP, SSH, FTP/SFTP, VRRP, and related networking protocols.
- Detailed knowledge of enterprise systems monitoring and management tools including LogicMonitor, Cisco Nexus Dashboard, Cisco Catalyst Center, Cisco FMC, Cisco ASDM, SolarWinds, Cisco Secure Network Analytics, and Wireshark.
- Detailed knowledge of Cisco, Fortinet, Nokia, and enterprise networking hardware.
- Detailed knowledge of wireless networking technologies, Cisco Wireless LAN Controllers, HP/Juniper Mist, and industrial wireless architectures.
- Detailed knowledge of network security principles, TACACS+, RADIUS, Cisco ISE, Cisco ASA/FTD, Fortinet Firewalls, and industry best practices.
- Strong analytical, organizational, and problem-solving skills.
- Good written and verbal communication skills.
- Ability to establish and maintain cooperative working relationships with other employees, departments, vendors, and contractors.
Nice To Haves
- Cisco Certified Network Professional (CCNP) certification preferred.
- Working knowledge of VXLAN/EVPN, multicast protocols, GRE/IPSec tunnels, policy-based routing, load balancing, and SR-MPLS.
- Working knowledge of Python, Ansible, or other network automation technologies preferred.
Responsibilities
- Installs, configures, administers, and maintains enterprise network infrastructure.
- Installs, configures, and supports routers, switches, wireless controllers, firewalls, and related network equipment.
- Performs routine network maintenance, firmware updates, software upgrades, and system patches.
- Monitors network performance and availability using enterprise monitoring tools.
- Implements network configuration changes in accordance with Authority standards and best practices.
- Performs performance tuning to improve network reliability and efficiency.
- Troubleshoots network hardware, software, and connectivity issues.
- Investigates and resolves complex network incidents escalated from lower support tiers.
- Diagnoses routing, switching, wireless, firewall, and WAN connectivity issues.
- Coordinates with telecommunications providers and hardware vendors to resolve service interruptions and equipment failures.
- Documents problems and resolutions for future reference.
- Assists with network infrastructure projects.
- Assists in planning, testing, implementing, and validating network upgrades, installations, and technology refresh initiatives.
- Coordinates installation activities to minimize operational impacts.
- Verifies that network implementations comply with Authority standards.
- Maintains network security and system integrity.
- Administers firewall policies, access control lists, authentication services, and network security configurations.
- Assists with implementing cybersecurity recommendations and security best practices.
- Ensures network devices remain current with vendor-supported firmware and security updates.
- Develops and maintains technical documentation.
- Documents network configurations, standards, procedures, diagrams, and topology information.
- Maintains reports and documentation supporting network operations and management decision-making.
- Performs related duties as assigned.
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
