Top Senior Network Engineer Jobs in Chicago, IL

Leads the design, implementation, operation, security, and troubleshooting of enterprise LAN/WAN, data center, cloud, telecommunications, voice, and network infrastructure. Manages incidents, monitoring, automation, vendors, lifecycle changes, documentation, disaster recovery, compliance, and infrastructure projects. Provides technical leadership, trains team members, participates in on-call support, and maintains reliable connectivity across enterprise environments.

Leads software engineering projects and developers building cloud-based, full-stack solutions using distributed microservices. Designs service boundaries, APIs, reusable frameworks, and database integrations; establishes engineering standards; improves performance and reduces technical debt. The role requires technical leadership across Agile teams, collaboration with product managers and architects, mentoring engineers, and applying modern cloud, DevOps, testing, observability, and AI-assisted development practices.

Build and lead full-stack software engineering solutions for Capital One’s stored payment token platform. Develop Java-based backend APIs and cloud-hosted services using AWS, microservices, databases, containers, and modern frontend technologies. Lead technical initiatives, establish engineering standards, partner with architects and product managers, improve system performance, reduce technical debt, mentor engineers, and drive scalable, secure, and reliable solutions across Agile teams.

Leads technical vision and hands-on engineering for high-volume global payment systems. Designs scalable, resilient distributed architectures, modernizes monoliths into microservices and event-driven platforms, establishes API and coding standards, and guides cloud, data, networking, and AI-enabled solutions. Mentors engineers, drives architectural reviews, collaborates across divisions, and ensures system performance, security, operability, and long-term platform strategy.

Designs and implements IP router networks, analyzes traffic and performance, configures routing protocols, forecasts capacity needs, develops network testing criteria, resolves complex technical issues, provides operational guidance and training, and coordinates network strategies with regional teams. Requires availability for nights, weekends, and variable schedules.

Designs, implements, and operates multi-region cloud and hybrid networking infrastructure. Develops Terraform modules and infrastructure standards, supports AWS architectures, cloud migrations, and data center exits, and contributes to architecture reviews, compliance-aware delivery, CI/CD enablement, documentation, and observability. Collaborates with platform, security, architecture, compliance, and engineering teams to improve scalability, automation, reliability, and operational efficiency.

Leads technical vision and hands-on engineering for high-volume, low-latency payment systems. Responsibilities include architecting scalable distributed platforms, modernizing monoliths into microservices and event-driven systems, defining API and design standards, ensuring performance and operability, mentoring engineers, leading cross-domain initiatives, and partnering with product and architecture leaders on long-term platform strategy.

Leads multiple software engineering teams building high-volume, resilient payment platforms. Owns technical strategy, enterprise architecture, cloud deployment, system scalability, engineering standards, talent development, and delivery across full-stack technologies. Partners with product and executive leaders to align roadmaps, improve engineering practices, operate distributed systems, and drive innovation using cloud, automation, and AI-enabled development.

Leads technical vision and hands-on engineering for high-volume global payment systems. Designs scalable, resilient distributed platforms; modernizes monoliths into microservices and event-driven architectures; establishes API and design standards; mentors engineers; drives architectural reviews, platform transformations, data migrations, and AI-enabled development across engineering and product organizations.

Leads full-stack software engineering projects and developer teams building distributed microservices and cloud-based systems. Develops robust solutions using modern programming languages, databases, containers, and AWS services. Provides technical leadership across Agile teams, establishes engineering standards, mentors developers, partners with architects and product managers, reduces technical debt, improves system performance, and influences long-term technology strategy.

Supports the design, configuration, operation, maintenance, and troubleshooting of enterprise and GCP network infrastructure. Responsibilities include routing, DNS, firewalls, VPNs, load balancing, certificates, segmentation, monitoring, incident response, root cause analysis, migrations, deployments, documentation, and change management. The role coordinates with cloud, security, DevSecOps, application, and operations teams to maintain secure, highly available connectivity across environments.

Leads technical vision and hands-on engineering for high-volume global payment systems. Designs scalable, performant, secure distributed architectures; modernizes monoliths into microservices and event-driven platforms; establishes API and coding standards; and drives cross-divisional technology initiatives. Mentors engineers, collaborates with architecture and product leaders, evaluates non-functional requirements, and contributes to cloud, data, AI, and payment-network strategy.

Designs and evaluates large-scale, multi-vendor fiber access networks using advanced PON technologies. Architects integration with routing, IP/MPLS, and optical transport systems; leads OLT and ONT platform evaluations; reviews high-level designs and migration strategies; provides complex troubleshooting and client advisory support; and mentors junior network engineers. The role also develops client-facing engineering deliverables and supports technical engagements, budgets, timelines, and vendor coordination.

Designs, develops, and operates enterprise integration solutions connecting applications, APIs, data sources, and cloud platforms. Leads complex integrations across Salesforce, GCP, and other systems; defines integration standards and reference architectures; ensures scalability, resilience, availability, security, and observability; collaborates with product, software, data, infrastructure, and architecture teams; and mentors engineers while advancing automation and modern engineering practices.

Designs, develops, and operates enterprise integration solutions connecting applications, APIs, cloud services, and business platforms. Leads integration architecture, reusable frameworks, automation, observability, resilience, and scalability across payment-network systems. Partners with product owners and enterprise architects, evaluates technologies and vendors, supports Agile delivery, and mentors engineers while modernizing client-facing capabilities across marketing, sales enablement, contract management, and due diligence.

Designs, implements, and maintains large-scale distributed networks supporting a DoD Zero Trust program. Responsibilities include SD-WAN architecture, router, switch, and firewall administration, network upgrades, troubleshooting, traffic analysis, documentation, disaster recovery, standards compliance, and coordination with IT teams and vendors. The role serves as a Zero Trust network architecture subject matter expert, mentors junior engineers, and supports installations and migrations across multiple global locations.

Designs, implements, and maintains global network and perimeter security infrastructure. Responsibilities include firewall rule analysis and optimization, security solution integration, network monitoring, troubleshooting, technical support, and collaboration on security projects with internal teams and data center partners. The role requires onsite work in Chicago at least three days weekly and occasional nighttime or weekend on-call availability.

Designs, implements, configures, and maintains distributed enterprise networks supporting a DoD Zero Trust program. Responsibilities include SD-WAN architecture, routing and switching, firewall and network security administration, troubleshooting, upgrades, documentation, disaster recovery, traffic analysis, standards compliance, vendor coordination, and mentoring junior engineers. The role supports installations, migrations, and configurations across multiple global locations while ensuring alignment with DoD regulations and Zero Trust requirements.

Administers and supports enterprise cloud security services, serving as the Skyhigh CASB subject matter expert. Manages DLP, anomaly detection, monitoring, tenant restrictions, integrations, documentation, automation, migrations to Palo Alto SASE/SSE, deployments, escalations, and technical solutions. Provides customer collaboration, presentations, mentoring, and on-call support while helping acquire necessary technology and services.

The Network Engineer implements, operates, troubleshoots, and supports distributed enterprise networks across corporate, engineering, manufacturing, secure, and mission-support environments. Responsibilities include routing, switching, wireless, firewalls, VPNs, network security, monitoring, incident response, deployments, migrations, documentation, disaster recovery, vendor coordination, and infrastructure automation. The role requires approximately five or more years of enterprise networking experience and is based in Washington, D.C.

Design, implement, and operate networking infrastructure for Azure Dedicated private and hybrid cloud environments. Responsibilities include hybrid connectivity, ExpressRoute, SDN solutions, third-party platform integration, network performance and security optimization, live-site operations, automation, observability, troubleshooting, and enabling migration and disaster recovery scenarios.

Leads full-stack software engineering teams, technology portfolios, and large-scale cloud-native initiatives. Responsibilities include setting technical strategy, managing engineering talent, defining technology roadmaps, driving architectural decisions, mentoring leaders, and delivering reliable distributed systems. The role involves collaboration with product and platform leaders, oversight of Agile programs, alignment with enterprise goals, and hands-on evaluation or development using modern programming languages, databases, cloud platforms, containers, and open-source technologies.

Designs, deploys, configures, and supports cloud network infrastructure across Azure, OCI, GCP, and AWS. Manages Palo Alto and Cisco firewalls, VPNs, routers, load balancers, subnets, security groups, and network access controls. Performs network monitoring, maintenance, upgrades, capacity planning, troubleshooting, and Level 2/3 support. Uses Terraform for infrastructure automation and supports EKS clusters, cloud security, IAM, STIGs, and vulnerability management. Participates in a required 24/7 on-call rotation.

Support enterprise, data center, and lab network infrastructure in production environments. Execute network moves, adds, and changes; deployments; migrations; maintenance; upgrades; troubleshooting; cutovers; and lifecycle activities. Maintain network documentation and operational records, validate post-change performance, follow standardized change procedures, independently resolve assigned work, and collaborate remotely with engineering stakeholders while escalating technical or access blockers.

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.