Top Senior Network Engineer Jobs in Chicago, IL

Provide Level III administration, troubleshooting, and recovery for a large Global Active Directory environment. Configure and diagnose domain infrastructure (DNS, DHCP, ADLDS, ADFS, FIM Sync), Windows servers, RADIUS/NPS, Office365/Azure identity integration, and federation protocols. Support M&A AD activities, perform outage communications, rotate on-call shifts in a 24x7 operations center, and apply remediation procedures for hardware/software failures.

Install, configure, and support enterprise networking equipment including Cisco Nexus 5K/7K switches, Cisco ASA firewalls, and F5 load balancers. Provide 24x7 support as needed. CCNA or CCNP certification is a plus.

Design, deploy, manage, and troubleshoot high-performance InfiniBand and Ethernet networks for HPC. Perform performance tuning, capacity planning, and monitoring. Implement Fortinet security, resolve routing/switching/latency issues, collaborate with compute and storage teams, document architectures, and participate in on-call escalation and upgrades.

Design, implement, automate, monitor, and support multi-vendor enterprise LAN/WAN/wireless/SD-WAN/cloud networks. Manage Cisco and Arista switching, Aruba wireless and ClearPass, Prisma SD-WAN, and SolarWinds observability. Perform vulnerability remediation, ticket-based operational support via ServiceNow, documentation, incident response, and occasional on-call and site travel.

Implement and support Zscaler Zero Trust and enterprise network/security solutions across NOV's global environment. Deploy and configure ZIA/ZPA, firewalls, VPNs, routing (BGP/OSPF), VLANs and cloud integrations; provide Tier-2+ troubleshooting, POC/pilot validation, performance tuning, documentation, training, and customer-facing implementation services while contributing to process improvements and product feedback.

Design, implement, and operate AWS network architectures (VPCs, Transit Gateway, Direct Connect). Manage hybrid connectivity, configure AWS networking services, troubleshoot performance and security, automate deployments with Terraform/CloudFormation, collaborate with DevOps/security teams, and document network architectures and procedures.

Design, implement, and support enterprise data networks across data centers, corporate sites, retail, distribution, and call centers. Author solutions and documentation, perform capacity planning, installation/configuration, monitoring, incident resolution, and security compliance. Lead or mentor engineers, collaborate with contractors, improve processes, and contribute to recruitment and team planning.

Lead and deliver cloud-based, full-stack solutions for a global payments network. Manage a portfolio and team, design distributed microservices, mentor engineers, collaborate with product, and use cloud, container, database, and multi-language technologies to meet regulatory and business needs.

Lead enterprise wireless engagements from discovery through design, survey, implementation, validation, optimization, and operational transition. Perform RF design and surveys using Ekahau tools, integrate WLAN with enterprise networking and security, mentor engineers, develop standards and reusable assets, and provide technical leadership and customer-facing advisory services.

Configure, install, monitor, and maintain network devices and services (routers, switches, firewalls, load balancers, VPN, QoS). Perform upgrades, patches, capacity planning, and follow change management processes. Monitor resource utilization and liaise with vendors and IT personnel for problem resolution.

Designs, deploys, validates, and troubleshoots enterprise wireless networks. Performs Ekahau predictive, passive, active, and validation surveys; conducts RF analysis; stages and configures APs/controllers; documents designs and as-builts; supports migrations and optimizations; travels to customer sites and collaborates with project teams and senior engineers.

Support design, deployment, and troubleshooting of enterprise wireless networks. Perform wireless assessments and predictive designs with Ekahau, collaborate with clients and project teams, document solutions, and travel to client sites as needed.

Perform L3 network troubleshooting and RCA on production enterprise networks, review telemetry/logs/configs, label and annotate network behaviors for ML training, and help define schemas and data pipelines to support AI-driven infrastructure.

Design, implement, and support large-scale enterprise WAN/LAN networks. Responsibilities include routing/switching (OSPF/BGP), MPLS/VPLS, QoS, load balancing (F5/A10 with iRules), firewalls (Palo Alto/Checkpoint), network management and monitoring, capacity planning, upgrades, troubleshooting complex issues, vendor integration, documentation, mentoring, ITIL/change management, and occasional travel (up to 20%).

Designs, implements, validates, and supports wired and wireless networks for patient monitoring systems. Performs site surveys, creates designs and documentation, stages and configures equipment, coordinates installations and cutovers, provides remote and on-site support, mentors junior engineers, and ensures adherence to standards and project timelines.

Support implementation and ongoing support of Riverbed Steelhead Mobile and Steelhead CX devices; design, operate, and maintain complex LAN/WAN/MAN/wireless environments; implement Riverbed, Cisco, and F5 solutions; coordinate with security teams; support mission-critical enterprise infrastructure for United Airlines.

Hands-on network engineer (CCNP+) responsible for L2/L3 design, routing (OSPF/BGP/EIGRP), Cisco router/switch platforms, WLAN/Aruba, security technologies, implementations, after-hours installs, documentation, and change-management adherence.

Support day-to-day network operations and troubleshooting; implement and maintain new and existing sites; perform adds/moves/changes for network ports and VLANs; manage carrier tickets for service outages while working on meaningful summer projects under a mentor in an on-site corporate environment.

Design, operate, and evolve multi-cloud and hybrid network architectures (AWS/Azure/GCP). Lead connectivity, segmentation, routing, security enforcement, observability, automation (IaC), incident response, and mentor engineers. Manage enterprise switching/routing/wireless platforms, troubleshoot complex issues, and participate in on-call rotations and audits.

The Network Engineer will support real-time trading, handle network configuration/troubleshooting, and work with automation tools. Responsibilities include managing Layer-2/Layer-3 services and packet analysis in production environments.

The Network Engineer will label, annotate, and structure data from networks, supporting the development of AI-driven infrastructure solutions.

As a Staff Network Engineer at D-Wave, you'll design, implement, and maintain networking infrastructure, manage AWS environments, and ensure network security, while mentoring junior team members.

Design, implement, and maintain distributed enterprise networks aligned with Zero Trust principles. Configure and manage routers, switches, firewalls, and SD-WAN across global sites. Troubleshoot complex network and security issues, manage PKI and certificates, forward logs to SIEM, ensure cloud network security (AWS/Azure/GCP), produce documentation, develop disaster recovery plans, mentor junior engineers, and ensure compliance with DoD ZT and relevant standards.

Support application teams by designing, configuring, and operating F5 and cloud application delivery platforms. Configure BIG-IP and F5 Distributed Cloud, manage DNS/GTM, tune WAF, troubleshoot connectivity and performance, onboard applications, automate repeated work with AI-assisted tooling, maintain runbooks, respond via ServiceNow, and participate in on-call rotation.

Support and operate enterprise application delivery platforms (F5 BIG-IP, F5 Distributed Cloud), onboard and configure applications, manage DNS/GTM, troubleshoot connectivity and performance, support WAF and edge protections, automate platform tasks, maintain documentation, and participate in on-call rotation.