Top Senior Network Engineer Jobs in Chicago, IL

Senior-level network engineer responsible for Tier-3 support, diagnosing outages, dissecting packet captures, labeling and analyzing network data, scripting tools to process/clean data, and defining schemas for large-scale data pipelines to support ML systems.

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.

Lead technical vision and hands-on engineering for Capital One's Global Payment Network. Design and deliver high-throughput, low-latency distributed systems in the cloud, drive AI-native automation, mentor engineers, influence executives, and improve performance, reliability, and security across payment platforms.

Lead technical vision and hands-on engineering for Capital One's Global Payment Network. Design and deliver high-throughput, low-latency distributed systems on public cloud, apply AI tooling, drive reliability, performance, and mentor engineering talent across the organization.

Manage and integrate complex systems, providing communications solutions, maintaining cloud infrastructure, assessing systems, and leading technical programs while ensuring compliance and data security.

The Network Engineer will support DARPA by managing DCO capabilities, troubleshoot networks, and deploy sensor platforms in various environments.

Design, configure, and support global network infrastructure while optimizing for low latency trading applications. Diagnose complex network issues using data-driven methods and automation. Manage global initiatives from requirements to deployment.

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 supports ISP/MSP customers, managing SDWAN networks, troubleshooting LAN setups, and configuring routers and firewalls. Responsibilities include customer support, issue resolution, and mentoring.

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.

As a Mid-Level Network Engineer, you'll implement and support enterprise networking solutions, troubleshoot issues, and collaborate with teams to improve service delivery and customer success.

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

The Network Engineer will leverage 3+ years of experience in network and systems administration to manage communications systems, troubleshoot issues, and provide technical support.

Lead design and standardization of a unified, high-availability global network across 20 manufacturing sites. Responsibilities include enterprise switching, SD-WAN/MPLS routing, Palo Alto firewall strategy and Panorama management, IT/OT segmentation, storage networking (NetApp, Pure, Dell), virtualization (VMware/Hyper-V), NAC administration, compliance with NIST 800-171/CMMC, and off-hours maintenance to minimize disruption.

Operate and maintain IP networking in a 24/7 SaaS environment. Troubleshoot network issues, manage service providers and equipment, perform capacity planning, execute network changes, assist with network activations, and participate in projects to improve WAN/connectivity and integrate partners and acquisitions.

Design and maintain large-scale networks, automate network management with Go and Python, and collaborate with engineering teams to optimize performance.

Lead and support a global Army network migration and operations: assess legacy environments, design/implement secure SD-WAN/MPLS/VRF routing, optimize performance, enforce DoD security/STIGs, document designs, and direct operations support staff.

Pre-sales Network Systems Engineer for Financial Services and Trading customers. Advise clients, gather requirements, lead pre/post-sales technical relationships, run POCs, deliver presentations and technical training, create solution materials, and support onsite customer testing and enablement. Travel ~10%.

Design, implement, and support enterprise cloud network infrastructure across Azure, OCI, and GCP. Manage firewalls, Cisco devices, VPNs, VPCs, and virtual networking; deploy configurations with Terraform (including AWS security groups); enforce STIG/IAVM compliance; monitor performance; provide Level-2/3 troubleshooting and participate in 24/7 on-call rotation.

Support, maintain, and improve enterprise LAN/WAN/wireless, SD-WAN, VPN/remote access, and firewall environments. Troubleshoot connectivity, monitor network health, execute upgrades and changes, maintain documentation, collaborate with stakeholders and vendors, and provide occasional on-call and voice system support.

The Network Engineer III applies engineering principles to design, implement, and support high availability network infrastructures, ensuring optimal performance and continuous improvement while mentoring junior engineers.

The Principal Network Engineer is responsible for hands-on implementation of global networks, troubleshooting complex issues, and mentoring a team. They manage multi-cloud environments, ensuring security and resilience while aligning networking goals with business needs and leading technical evaluations with vendors.

The Cloud Network Engineer will manage the network infrastructure by configuring, installing, and supporting systems across multiple cloud platforms, ensuring security and reliability.

Design, implement, and operate hybrid on-premise-to-cloud network architectures with emphasis on Google Cloud networking (VPC, VPN, Interconnect, LB, firewall). Build and refactor Terraform modules (JSON-driven hydration), troubleshoot routing/DNS/load balancing, automate infrastructure delivery, monitor performance, and ensure reliable, secure network segmentation.

Lead GCP networking strategy and design end-to-end cloud network architectures. Implement Terraform-based IaC, drive observability and SLOs, lead incident response, mentor the networking team, partner with security/compliance, and define multi-year infrastructure roadmaps balancing performance, security, cost, and operational pragmatism.