Top Network Engineer Jobs in Denver & Boulder, CO

Designs, implements, maintains, and supports network, telecommunications, and unified communications infrastructure. Responsibilities include configuring routers, switches, firewalls, VPNs, wireless systems, VoIP platforms, and related services; monitoring performance; troubleshooting complex issues; supporting security, capacity planning, disaster recovery, audits, and compliance; documenting systems; leading projects; and mentoring junior team members. The role also participates in on-call support and network upgrades.

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.

Designs, implements, configures, maintains, and troubleshoots enterprise network infrastructure across multiple sites. Manages Cisco routing, switching, wireless, VoIP, Palo Alto firewalls, VPNs, security appliances, DNS, DHCP, and related systems. Leads complex network implementations, supports hardware and software upgrades, maintains security standards, documents technical work, collaborates with IT teams and service providers, and contributes to long-term network planning and project delivery.

Designs, manages, and supports LAN/WAN, wireless, SD-WAN, and IT/OT segmented network infrastructure across laboratory, manufacturing, and corporate environments. Configures switches, routers, and firewalls; troubleshoots connectivity issues; supports network security measures; monitors network performance; and documents technical procedures, configurations, and project plans. Requires strong routing, switching, VPN, IPv6, cloud, virtualization, and network security knowledge, plus a bachelor’s degree and at least three years of experience.

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.

Owns the architecture, implementation, monitoring, security, and support of a hybrid enterprise network spanning physical sites, AWS, Azure, and remote users. Leads cloud connectivity modernization, network deployments, troubleshooting, incident response, automation, documentation, vendor relationships, and resilience improvements. Provides technical mentorship and participates in on-call support.

Provides Tier 3 operational ownership and engineering support for complex enterprise networks and communications infrastructure. Responsibilities include incident response, troubleshooting, root-cause analysis, approved changes, patching, monitoring, documentation, carrier and vendor coordination, and service improvement. Supports Cisco networking, firewalls, SD-WAN, VPN, wireless, optical networks, voice, unified communications, and related monitoring platforms. The role also requires client communication, technical documentation, after-hours maintenance participation, and collaboration within a 24/7 managed-services environment.

Design, build, test, and optimize scalable control-plane and data-plane network services and tools. Develop APIs, improve reliability and performance, support cloud products, establish engineering best practices, collaborate across teams, and mentor engineers. The role focuses on distributed systems, networking, observability, containerization, and production-ready software delivery.

Serves as a Tier 1 Network Operations Center responder for a federal enterprise network spanning approximately 50 sites. Responsibilities include ticket triage and ownership in ServiceNow, connectivity diagnostics, switch port resets, alarm monitoring, SLA-based escalation, stakeholder updates, service request processing, documentation, topology and asset inventory maintenance, and support for Cisco, firewall, and enterprise network infrastructure. The role also contributes to monitoring configuration, reporting, and knowledge-base development.

Designs, deploys, and supports enterprise network solutions for healthcare and business clients. Leads network architecture, infrastructure modernization, and data center initiatives; advises clients, supports consulting and pre-sales engagements, mentors engineers, and coordinates with vendors and internal teams. Participates in an after-hours on-call rotation for critical network escalations.

Design, develop, and optimize high-performance network datapath software for cloud infrastructure. Build packet-processing, forwarding, routing, filtering, tunneling, load-balancing, observability, and hardware-accelerated networking solutions. Analyze and improve throughput, latency, CPU efficiency, scalability, and reliability across Linux, kernel, user-space, and hardware systems. Lead technical designs through production, investigate complex networking issues, write architecture documentation, collaborate across engineering teams, and mentor engineers.

Design and build software for global network infrastructure, including automation, orchestration, provisioning, device lifecycle management, telemetry, validation, and remediation. Integrate DPUs, SmartNICs, and programmable networking into scalable cloud infrastructure. Lead architecture, RFCs, technical proposals, and complex initiatives while mentoring engineers and setting technical direction across network, hardware, compute, storage, and security teams.

Operate and troubleshoot globally distributed data center networks, including routing, switching, circuits, hardware, and Layer 1–3 issues. Serve as the Tier 2 escalation point, manage critical incidents, support monitoring and optimization, document changes, and coordinate with facilities, vendors, and engineering teams. Contribute to automation, dashboards, capacity planning, process improvements, asset management, and SLA adherence.

Provides Tier 2 support for a globally distributed data center network. Responsibilities include advanced Layer 1–3 troubleshooting, routing and switching support, incident escalation, network monitoring, performance optimization, documentation, automation, capacity planning, hardware replacement coordination, and SLA adherence. The engineer serves as the primary escalation point for Tier 1 teams and collaborates with engineering and facilities groups during critical incidents and maintenance activities.

Operates and troubleshoots globally distributed data center networks, resolving complex Layer 1–3 routing, switching, transport, and hardware issues. Serves as the Tier 2 escalation point, manages major incidents, supports monitoring and optimization, documents network changes, and coordinates with facilities, vendors, and engineering teams. The role also contributes to automation, dashboards, capacity planning, asset management, and process improvements.

Designs and deploys network infrastructure for office openings, relocations, and refreshes. Configures firewalls, switches, wireless networks, VPNs, SD-WAN, routing, and related services. Coordinates with ISPs, contractors, and vendors; troubleshoots connectivity issues; creates technical documentation; and supports cutovers, validation, handoff, and ongoing operations. The role owns technical project tasks from planning through completion and requires occasional off-hours work and regular travel.

Designs, automates, deploys, monitors, and troubleshoots operational C2BMC network capabilities. Develops infrastructure-as-code and configuration management processes, resolves routing, switching, firewall, security, and availability issues, and collaborates with engineering, cybersecurity, and operations teams. Supports mission events, tests, exercises, deployments, and real-world operations, including occasional nights, weekends, and travel. Requires an active Top Secret clearance and IAT Level II or higher certification.

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.

Designs and implements enterprise Cisco networking solutions, leading complex upgrades, migrations, troubleshooting, and automation initiatives. Uses Python and AI-driven tools to improve efficiency, collaborates with customers and internal teams to drive solution adoption, and develops technical content, best practices, and playbooks. Requires customer-site travel up to 25% and strong expertise in enterprise networking, Cisco controllers, programmability, and consultative delivery.

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.

Installs, configures, maintains, and upgrades global network infrastructure, including routers, switches, firewalls, VPN endpoints, datacenter, backbone, and CDN environments. Troubleshoots outages, traffic issues, hardware and software problems, and network incidents. Coordinates with ISPs and vendors, manages switch infrastructure, handles RMAs and errors, and independently resolves complex network issues with limited supervision.

Plans, designs, integrates, tests, secures, installs, maintains, and upgrades mission-critical government networked command-and-control systems. Evaluates network requirements, architecture, capacity, performance, resiliency, and cybersecurity compliance; diagnoses network issues; develops technical documentation and validation procedures; supports system engineering, sustainment, deployment, training, and operations oversight; and guides junior and mid-level network administrators.

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, installs, configures, monitors, troubleshoots, and maintains WAN/LAN networks and associated hardware and software. Supports network availability, upgrades, security measures, project connectivity, testing, inspections, and technical documentation. Requires active TS/SCI clearance with CI polygraph, Security+ certification, and Cisco or Juniper network engineering experience. The role is fully onsite in Aurora, Colorado, includes approximately 10% travel, and may require occasional after-hours support.