Top Senior Network Engineer Jobs in Chicago, IL

Supports LAN and WLAN network surveys, modernization design, cost analysis, configuration, installation, and implementation of routers, switches, wireless controllers, and access points. Assists with VLAN and IP migrations, cybersecurity compliance, implementation plans, documentation, and hardware materials lists. The role requires an active Secret clearance, U.S. citizenship, engineering education or equivalent experience, network certifications, and 60–75% domestic travel.

Leads the planning, design, installation, migration, testing, troubleshooting, and maintenance of LAN/WLAN and telecommunications networks. Configures routers, switches, wireless controllers, VLANs, and IP addressing; develops implementation plans, technical documentation, bills of materials, and cost analyses. The role requires active Secret clearance, U.S. citizenship, extensive network engineering experience, relevant Cisco, Juniper, or Ruckus certification, IAT Level II certification, and 60–75% travel.

Supports and delivers managed network services for ISP and MSP customers. Responsibilities include troubleshooting and configuring SD-WAN, routers, firewalls, VPNs, VoIP, data circuits, Microsoft systems, and LAN environments; provisioning new customers; coordinating with vendors; resolving issues through completion; maintaining customer relationships; and mentoring engineers. The role emphasizes Versa Networks, firewall configuration, BGP, OSPF, VRRP, NAT, network design, and QoS.

Architects, deploys, and manages secure automated networking across AWS, Azure, and hybrid-cloud environments. Designs Spine-Leaf networks, optimizes Direct Connect and ExpressRoute connectivity, leads infrastructure-as-code practices with Terraform and Ansible, and drives multi-cloud network product vision. The role troubleshoots network and security issues, supports tier 3 on-call operations, collaborates with stakeholders, and creates technical documentation and knowledge-sharing presentations.

Participates in AHEAD’s associate development program, beginning with three months of network training before supporting client projects. Collaborates across teams, analyzes technical issues, recommends solutions, manages competing priorities, and delivers projects on schedule. Requires infrastructure experience, technical education or equivalent training, data center knowledge, U.S. work authorization, and willingness to travel more than 50%. Preferred certifications include CCENT, CCNA, Network+, Server+, Security+, VCTA, and CCA-V.

Designs, deploys, operates, and optimizes low-latency research, enterprise, and trading networks. Responsibilities include troubleshooting complex network, hardware, cabling, and optics issues; developing Python automation and monitoring tools; maintaining networking standards; ensuring scalability and reliability; and guiding teams on networking protocols and infrastructure strategy.

Leads the design, implementation, and operation of enterprise network security platforms across data centers, cloud environments, retail locations, offices, and distribution centers. Responsibilities include Palo Alto and Fortinet firewall management, Zscaler administration, zero trust architecture, segmentation, compliance controls, incident response, automation, documentation, device lifecycle management, and security architecture strategy.

Build and manage scalable ETL/ELT pipelines using Microsoft Fabric and Azure Databricks, implement medallion architecture, support data migrations and legacy SSRS decommissioning, develop Power BI data models, and maintain governance, security, and CI/CD practices. The role also supports migration events and modernizes data infrastructure for advanced analytics and reporting.

Design, operate, and improve high-performance wireless networks for financial markets. Responsibilities include monitoring and telemetry platforms, device integrations, RF path design, frequency coordination, wireline and optical transport, link commissioning, incident response, production change management, regulatory research, site development, and automation. The role requires Python, Linux, networking, RF expertise, rigorous operational practices, international travel, and participation in a global on-call rotation.

Provides staff-level customer-facing technical support for complex multi-cloud networking and security issues. Serves as an escalation point, leading troubleshooting, packet analysis, root cause analysis, deployments, integrations, optimization, and upgrades. Collaborates with sales, solution engineering, and product engineering teams; identifies defects, validates fixes, and improves product quality. Develops technical documentation, runbooks, and troubleshooting guides while advising leadership on recurring customer issues.

Designs, deploys, and troubleshoots enterprise cloud and hybrid network infrastructure across Azure, OpenShift, corporate offices, and security platforms. Administers FortiGate, FortiSASE, Cisco Meraki, Cloudflare, DNS, load balancing, ingress controllers, and Kubernetes networking. Partners with application, security, and cloud teams on deployments and incident response, creates network documentation, manages monitoring and alerting, and performs changes under established procedures.

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.

Design, implement, and support low-latency, high-availability network infrastructure for real-time trading. Own projects across data centers, troubleshoot complex network and latency issues, perform maintenance and upgrades, monitor capacity, document systems, and participate in on-call rotation while collaborating with software engineers and traders.

Designs, configures, troubleshoots, and optimizes secure network connectivity across cloud, hybrid, on-premises, and legacy environments. Monitors network performance, resolves incidents, supports controlled infrastructure changes, maintains technical documentation, and prepares operational reporting. The role also supports resilient cloud integration, security controls, service restoration, root-cause analysis, and formal IT service-management processes.

Designs, implements, automates, monitors, and optimizes enterprise network infrastructure across branch, campus, data center, and cloud environments. Develops automation scripts, playbooks, and pipelines using Python, Ansible, Terraform, and related tools. Troubleshoots routing, switching, firewall, wireless, and cloud networking issues; supports monitoring, incident response, change management, disaster recovery, compliance, documentation, and infrastructure modernization in a regulated banking environment.

Operate, monitor, troubleshoot, and optimize global network infrastructure across datacenters and telco partners. Diagnose complex network incidents, drive root-cause analysis, implement long-term fixes, document configurations and procedures, coordinate cross-team remediation, and support network architecture, routing, and peering for LAN/WAN/wireless environments.

Lead the architecture and evolution of edge-to-cloud connectivity for globally deployed humanoid robots. Design highly available, low-latency, secure network systems spanning 5G, private LTE, on-premise deployments, and cloud infrastructure. Engineer high-throughput telemetry and control traffic, hybrid connectivity tunnels, SDN and virtualization solutions, and fleet-wide observability. Serve as the technical authority for network architecture while partnering with cross-functional leaders. Perform advanced packet, Wi-Fi, RF, and network performance analysis.

Implement, configure, maintain, troubleshoot, and optimize F5 BIG-IP load-balancing infrastructure across distributed data centers and LAN/WAN environments. Manage virtual servers, SSL/TLS, iRules, certificates, HA failover, upgrades, monitoring, and network diagnostics. Administer Cisco, Juniper, and Infoblox infrastructure; support routing, switching, DNS, IPAM, documentation, security compliance, maintenance windows, and on-call escalations. The role requires U.S. citizenship and eligibility for an agency security clearance.

Design, deploy, and operate enterprise network infrastructure across data centers and cloud (GCP, AWS, Azure). Manage VPCs, VPNs, BGP, F5 BIG-IP, hybrid connectivity, and observability. Build IaC and automation with Terraform, GitLab CI/CD, and Ansible. Maintain monitoring, documentation, and participate in on-call support for critical incidents.

Designs, deploys, troubleshoots, and supports enterprise network and security infrastructure, including routing, switching, firewalls, wireless, cloud networking, VPNs, and data center services. The role analyzes operational incidents, implements remediation, maintains documentation, communicates with management, supports roadmap decisions, and participates in on-call rotations. It requires extensive experience with multi-vendor network security technologies, cloud platforms, and customer-facing technical work.

Leads a team of 4–6 senior network engineers while providing hands-on support for complex customer environments. Oversees daily operations, escalations, incident and major incident management, root cause analysis, preventive measures, performance reviews, on-call scheduling, and workload distribution. Troubleshoots and optimizes Cisco, Nexus, Meraki, Palo Alto, Check Point, F5, and SAN technologies, while supporting monitoring, automation, patching, firmware updates, and hardware lifecycle management.

Own and operate a globally distributed VPN network, AWS control plane, backend infrastructure, and infrastructure-as-code tooling. Improve reliability, security, automation, observability, CI/CD, deployment safety, and cost efficiency across multiple providers. Troubleshoot production incidents, participate in 24/7 on-call, manage networking and VPN technologies, and replace manual operational processes with tested automation. Partner with engineering and product teams while ensuring high uptime, connection success, performance, and compliance.

Design, implement, and maintain MEMX’s low-latency trading network infrastructure. Configure network devices using Ansible and Python, monitor alerts, resolve incidents, perform root-cause analysis, and support customer connectivity turn-ups and tickets. Analyze and validate new products, implement secure end-user solutions with security teams, and coordinate with data center and circuit providers. The role requires expertise in distributed systems, routing protocols, multicast, network operating systems, timing protocols, packet analysis, firewalls, and optical networking.

Designs, implements, manages, and supports secure, highly available enterprise networks across global sites. Responsibilities include routing, switching, firewalls, wireless, SD-WAN, VPNs, cloud networking, automation, monitoring, lifecycle management, and advanced troubleshooting. The role serves as a senior escalation point, leads major incident responses, performs root cause analysis, and collaborates with infrastructure, cybersecurity, cloud, and operations teams on network reliability and modernization.

Own end-to-end network reliability across data centers, AWS, and GCP, including routing, switching, DNS, load balancing, service mesh, VPNs, circuits, and cross-connects. Automate network configuration with Ansible, Terraform, GitOps, CI validation, and IPAM. Engineer failover, observability, security hardening, client connectivity, and Kubernetes ingress while participating in an interrupt-contained on-call rotation.