Top Senior Network Engineer Jobs in Chicago, IL

Build and operate blockchain network infrastructure integrating protocols such as Bitcoin and Ethereum with internal services. Design reliable APIs, SDKs, data contracts, observability, and SLOs; lead multi-quarter chain integrations, architecture modernization, and migrations. Improve latency, reliability, and cost for high-throughput distributed systems while owning production services and on-call responsibilities.

Provides senior-level technical support for enterprise customers using Aviatrix’s multicloud networking and security products. Responsibilities include troubleshooting complex network environments, resolving high-priority issues, coordinating with engineering and sales, reporting product issues, improving support documentation and workflows, supporting production environments, and mentoring cloud network engineers. The role requires expertise in routing, BGP, IPsec VPN, Linux, networking products, cloud platforms, scripting, and automation.

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.

Designs, deploys, maintains, and optimizes cloud network infrastructure across AWS, Azure, and Google Cloud. Responsibilities include architecting highly available and scalable networks, configuring VPCs, subnets, transit gateways, VPNs, CDNs, and load balancers, troubleshooting complex network issues, analyzing traffic and security risks, automating infrastructure, and leading network architecture initiatives. The role supports enterprise technical teams and requires DHS EOD clearance eligibility.

Design, build, and maintain AI-powered B2B SaaS products across frontend, backend, and AI. Own projects end-to-end, collaborate with product and design, ensure maintainability, mentor teammates, and inform roadmap and implementation decisions.

Designs, implements, and supports complex telecommunications transport and network infrastructure. Responsibilities include architecture, high-availability design, troubleshooting, monitoring, optimization, documentation, KPI definition, project coordination, escalation management, and technical planning. The engineer provides final design specifications, supports long-term architecture, mentors junior staff, and delivers technical direction across multiple departments. Occasional travel, shift work, and after-hours emergency support may be required.

Staff Network Engineer responsible for designing, integrating, automating, and supporting complex on-premises and multi-cloud network environments. The role leads network and cloud connectivity projects, develops infrastructure-as-code and automation, troubleshoots high-severity incidents, optimizes network performance and costs, maintains engineering documentation, and mentors network engineers. Responsibilities include routing, switching, security, load balancing, observability, capacity modeling, cloud integration, and 24x7 mission-critical support.

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 advanced network engineering and firewall expertise in a managed services environment. Owns complex incident resolution, root cause analysis, network project delivery, solution design, implementation, change validation, Palo Alto configuration, network hardening, legacy environment optimization, documentation, and technical mentorship. The role is remote from Brazil and requires fluent English, extensive enterprise networking experience, and deep Palo Alto Networks expertise.

Designs, leads, and supports enterprise network security and infrastructure solutions. Responsibilities include network engineering, NAC, IAM, ZTNA, VPN, certificate and PKI management, secure connectivity, identity-driven access controls, segmentation, highly available distributed environments, platform upgrades, lifecycle management, and capacity planning. The role also evaluates technology solutions and leads cross-functional initiatives focused on performance, reliability, scalability, and capacity.

Leads the design, implementation, and support of complex internal, external, hosted, and cloud network infrastructure. Manages WAN/LAN connectivity, routers, switches, firewalls, monitoring tools, remote access solutions, and network efficiency initiatives. Participates in security audits and resolves network vulnerabilities. Requires advanced networking experience with Cisco hardware, VMware, F5, InfoBlox, Cisco ISE, Palo Alto firewalls, and related technologies.

Ensure reliability, scalability, and usability of network infrastructure for Akamai Connected Cloud. Define requirements and SLOs, build automation and CI/CD pipelines, collaborate with dev/QA to improve code and stability, troubleshoot complex network issues (on-call), and mentor teammates while driving architectural standards.

Designs, implements, supports, and optimizes high-availability IP/MPLS, carrier Ethernet, cellular, and video transmission networks. Responsibilities include capacity planning, bandwidth forecasting, outage troubleshooting, network monitoring, infrastructure documentation, escalation management, project coordination, and continuous improvement. The role provides technical direction to junior engineers and technicians, supports telecommunications engineering projects, and applies standards for availability, redundancy, scalability, efficiency, and security.

Lead the technical direction of Attentive’s compute and networking platform. Build reusable AWS infrastructure, Kubernetes systems, APIs, and self-service tools while improving reliability, scalability, cost efficiency, security, and developer productivity. Own complex cross-team initiatives from design through production, diagnose sophisticated infrastructure issues, improve CI/CD and observability, mentor engineers, and establish effective AI-assisted development practices.

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.

Own the architecture, delivery, roadmap, and operational health of a network solutions engineering team. Partner with Product to scope and deliver predictable software, maintain high engineering and DORA standards, apply AI-assisted development, manage dependencies, participate in on-call, handle incidents, develop engineers, and lead hiring. The role remains hands-on, requiring recent coding, code review, technical decision-making, and ownership of networking products including load balancing, switching, firewalls, VPN, and VPC.

Design, deploy, and support enterprise and data center network solutions for healthcare clients. Lead architecture and infrastructure modernization, provide client consulting and pre-sales support, mentor engineers, collaborate with vendors and carriers, and participate in on-call rotations for critical escalations.

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.

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

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 and scale reliable spine-leaf data center networks supporting GPU clusters and AI workloads. Build Ethernet fabrics using EVPN/VXLAN and BGP, optimize traffic, support RoCE/RDMA, and manage backbone, WAN, DCI, and edge connectivity. Develop network automation and Infrastructure-as-Code solutions, improve observability and telemetry, troubleshoot distributed performance issues, and collaborate with compute, storage, platform, and operations teams. The role requires hands-on Cumulus NOS expertise and experience with large-scale, high-performance infrastructure.

Designs, implements, and manages enterprise SD-WAN, SASE, secure remote access, cloud networking, and UCaaS solutions. Leads network transformation projects, supports Cato, Fortinet, Versa, and Cisco Meraki platforms, mentors engineers, provides advanced technical escalation, develops automation, documents solutions, and helps maintain client uptime SLAs. The role also performs network assessments, implements Zero Trust architectures, troubleshoots complex environments, and collaborates directly with clients and managed-services teams.