Top Network Engineer Jobs in Chicago, IL

Designs, implements, maintains, and optimizes North American networking infrastructure connecting trading operations, data centers, exchanges, and global offices. Responsibilities include network architecture, engineering projects, performance optimization, monitoring, incident resolution, documentation, reporting, and support for UNIX, Windows, SAN, and data center deployments. The role also requires troubleshooting advanced network technologies and mentoring junior network team members.

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.

Design, implement, and support a high-performance networking environment while collaborating with traders and developers to enhance network operations.

Leads technical vision and engineering excellence for a cloud-native global payments network. Designs and reviews resilient, secure, scalable, low-latency systems; decomposes complex problems; supports cloud modernization and new payment capabilities; mentors engineers; shares technical knowledge; and advises teams on architecture, performance, scalability, operability, and production-quality implementation.

Own and operate low-latency network infrastructure for trading systems, including colocation connectivity, exchange feeds, L2/L3 topology, BGP and OSPF routing, PTP synchronization, firewall policies, automation, packet analysis, documentation, and incident response. The role involves designing infrastructure from scratch, managing vendors, building Python tooling, and participating in on-call support within a small network engineering team.

Owns and optimizes resilient, ultra-low-latency network and physical data-center infrastructure for institutional trading across cloud and on-premises environments. Designs routing, multicast, segmentation, firewall, VPN, telemetry, and automation systems. Leads production changes, incident response, failover testing, maintenance, and on-call support for 24/7 trading platforms. Mentors engineers and partners with SRE, product, and trading-system teams to improve reliability and developer velocity.

Provides enterprise technical leadership for cloud and network modernization across DoD environments. Engineers multi-cloud integrations, secure connectivity, cloud access points, routing and switching, data center technologies, F5 ADC solutions, and Zero Trust architectures. Leads migration planning, compliance with DoD security frameworks, Tier 3/4 troubleshooting, technical documentation, executive recommendations, and cross-disciplinary initiatives. The hybrid role supports DLA and requires periodic onsite work for NIPR/SIPR operations.

Lead technical vision and architecture for a cloud-native, low-latency global payments platform. Decompose complex systems, ensure performance/scalability/operability, drive reusable solutions, mentor engineers, evangelize best practices, and apply advanced AI tooling to accelerate development.

Designs, implements, supports, and optimizes high-availability telecommunications network infrastructure, including IP/MPLS, carrier Ethernet, cellular data, and video transmission systems. Responsibilities include capacity planning, bandwidth forecasting, outage troubleshooting, monitoring, documentation, project coordination, escalation management, and network security. The role also provides technical direction to junior engineers and technicians, supports small projects, and contributes to strategic infrastructure planning and continuous improvement.

Design, implement, and maintain low-latency exchange network infrastructure. Configure network devices using Ansible and Python, monitor alerts, resolve incidents, perform root-cause analysis, support customer connectivity and turn-ups, validate products, engineer secure solutions, and coordinate with data center and circuit providers.

Lead and mentor a team building high-throughput, resilient distributed microservices and full-stack cloud solutions for global payment processing. Collaborate with product managers, design scalable systems, ensure observability and reliability, and occasionally code, evaluate, and modernize platforms using cloud, container orchestration, and multiple programming languages.

Designs, implements, and maintains cloud and on‑prem network infrastructure with IaC (Terraform/CloudFormation/Ansible), supports AWS environments, builds CI/CD pipelines, authors technical documentation, troubleshoots escalations, and collaborates with Cloud Architects and product teams in a remote Agile environment.

Delivers post-sales network engineering services, including requirements assessment, solution design, equipment staging, configuration, testing, deployment, documentation, and client coordination. Manages complex data center networking environments involving routers, switches, firewalls, load balancing, DMZs, DDI, routing protocols, and modern switching architectures. Collaborates with clients, vendors, Smart Hands, project managers, and internal teams to meet service-level objectives, resolve issues, improve deployment processes, and enhance service delivery.

Designs, implements, and supports complex high-availability telecommunications network infrastructure. Leads architecture and long-term planning, optimizes performance and scalability, manages escalations, defines operational KPIs, and maintains documentation and diagrams. Serves as project engineer and subject-matter expert for major initiatives, coordinating across departments and engineering disciplines. Provides technical leadership, mentors junior engineers and technicians, and ensures reliable, secure integration of network services within demanding operational environments.

Designs and implements complex enterprise network solutions, supports customer pilots and sales, provides Tier IV escalation support, troubleshoots network issues, develops capacity models, evaluates hardware and software, maintains technical documentation and procedures, and conducts security audits. Leads and mentors network engineers, presents technical information, participates in an on-call rotation, and supports customer professional services projects. The role requires independent judgment, occasional travel, and variable night or weekend work.

As a Network Engineer, you will resolve network issues, improve operations through automation, mentor juniors, and interact with clients.

Design and evolve ultra-low-latency global networks across data centers, colocation, and cloud. Lead routing, scalability, lab validation, automation (Python), observability, and high-complexity migrations while mentoring engineers and producing regulatory and operational documentation.

The Network Engineer plans, tests, documents, and implements network hardware, software, configuration, routing, and interoperability changes across DLA WAN, DISN, cloud, core, and remote networks. Responsibilities include developing implementation and assessment plans, conducting laboratory evaluations, creating network designs and maps, preparing test and after-action reports, defining requirements, analyzing telecommunications needs, supporting network services, and recommending routing and configuration improvements. The role requires hybrid onsite work and SIPR-related support.

Administer and troubleshoot IBM z/OS Communications Server environments (VTAM, TCP/IP, TN3270); support GDPS disaster recovery networks; manage TPX Session Manager and Connect:Direct; implement secure file transfer (FTP/SFTP/FTPS/FTP-AT/TLS); perform SMP/E software installs and upgrades; monitor and resolve complex mainframe networking issues; participate in on-call rotation and develop operational procedures and best practices.

Lead architecture and implementation of high-throughput, low-latency global payment systems in the cloud. Drive technical vision, mentor engineers, evangelize AI-native patterns, remove technical debt, and partner with executives to deliver resilient, secure, and scalable payments infrastructure.

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.

The Senior Lead Network Engineer will enhance and maintain large-scale network infrastructure, advise on hardware and software, conduct testing, and provide training.

Monitor and maintain enterprise network infrastructure in a Tier 1 Network Operations Center. Investigate and resolve alerts, incidents, and service interruptions; provide network support; document troubleshooting and resolutions; escalate complex issues; implement approved changes; and coordinate with engineering, IT operations, field services, and vendors. The role operates in a fast-paced 24/7 environment with a strong focus on reliability, customer experience, and technical growth.

Manage and optimize high-bandwidth, low-latency VFX network infrastructure supporting render farms, storage, cloud rendering, artist collaboration, and remote workstations. Configure AWS Deadline Cloud, troubleshoot Maya and Arnold rendering, build asset-transfer and per-show environment systems, optimize Linux and Windows pipelines, and document architecture and procedures. The role requires strong Python and Bash scripting, networking, storage, systems administration, render-farm, and VFX pipeline expertise.

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.