Top Network Engineer Jobs in Denver & Boulder, CO

Support design, deployment, automation, and troubleshooting of large-scale 5G transport and core routing infrastructure. Configure and activate network devices, validate integrations, document procedures, and collaborate with vendors and cloud teams to maintain network reliability.

Lead design, deployment, and automation of nationwide 5G carrier networks (LAN/WAN/RAN) ensuring high availability, multi-VRF support, IPv6/SRv6 and MPLS/segment routing compliance. Provide technical leadership for upgrades and expansions, implement automation (Python/Bash/Ansible/ZTP), apply AI for predictive maintenance, and maintain 24x7 production uptime with rigorous testing and operational documentation.

Design, deploy, maintain and support enterprise network infrastructure across US and South America. Troubleshoot devices and protocols (switches, routers, firewalls, APs, OSPF, BGP), perform upgrades, monitor performance, ensure high availability and compliance, document configurations, and collaborate with cross-functional and UK Network teams to resolve incidents and implement improvements.

Provide Tier II network engineering and configuration management support for enterprise LAN/WAN environments across multiple classifications. Tasks include installation and maintenance of network devices, maintaining configuration baselines per DISA STIG, drafting and executing change requests, troubleshooting L1-L3 issues, producing network diagrams and documentation, supporting the Configuration Control Board, and administering CM records and tools (ServiceNow, Confluence, Visio).

Support C2BMC network security by planning, deploying, integrating, and testing network upgrades; develop cyber-secure device configurations, ensure STIG hardening and DoD RMF compliance, conduct research, document designs, run cyber protocols, and assist during operational events.

Provide advanced support and escalation for SD-WAN services for mid-market customers: troubleshoot SD-WAN overlays and underlay circuits, resolve routing and connectivity incidents, coordinate hardware replacements, perform service assurance and change requests, monitor network performance, document resolutions, and participate in on-call and after-hours support.

Build and expand Cloudflare's global datacenter network: coordinate installations, manage hardware and contractors, implement consistent processes, perform Linux administration, use configuration management and scripting, and collaborate with SRE and Network Engineering to improve operations and automation.

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.

Lead design, implementation, automation, and security operations for Azure cloud networking in FedRAMP High/IL4 environments. Build modular IaC (Terraform, ARM, Bicep), implement advanced networking and firewall controls, mentor team members, participate in on-call support, and translate compliance controls into enforceable guardrails.

Provide first-line network support: troubleshoot connectivity and hardware issues, monitor network performance, perform routine maintenance, escalate complex incidents to higher tiers, document ticket resolutions, and assist end users with basic networking needs.

Lead day-to-day network operations and a team of network engineers. Provide hands-on support for complex troubleshooting and implementations across data center, WAN/Internet, cloud connectivity, wireless, load balancers, firewalls, and circuits. Own incident, change, and problem management, vendor coordination, documentation, and continuous improvement to meet SLAs, reduce MTTR, and ensure operational readiness. Support budgeting input and on-call/after-hours incident response.

Design, deploy, and manage multi-cloud network and VDI infrastructure; implement VPN and Zero Trust security; monitor and tune network performance; troubleshoot connectivity; maintain documentation; train and mentor junior staff; provide on-call support and collaborate with security and engineering teams.

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.

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.

Design, implement, commission, and troubleshoot industrial networks for manufacturing sites. Create network designs, BOMs, diagrams, and documentation; configure Cisco/Rockwell switches; support on-site installation, testing, and project lifecycle activities.

Operate and lead data-center LAN infrastructure in a 24/7 SaaS environment. Own troubleshooting, incident response, and change management across Cisco Nexus, Palo Alto, and F5 platforms. Drive projects, architecture (VXLAN/EVPN), automation (Ansible, Terraform, Python), observability (Prometheus, Grafana, SolarWinds), and cloud networking (AWS, GCP). Mentor junior engineers, participate in on-call rotation, and define operational standards, reliability metrics (SLI/SLO), and preventive engineering.

The Systems Engineer manages customer infrastructure focusing on networking, servers, and cloud environments, including incident response and automation. They will perform on-site and remote work, collaborating to enhance operational excellence.

Designs, installs, configures, secures, and sustains network infrastructure (switches, routers, firewalls) for JTAGS. Duties include network design, monitoring, troubleshooting, documentation, coordination with third-party maintenance, and occasional off-shift support and travel.

Design, implement, and document OCI networking for hybrid cloud including VCNs, DRGs, FastConnect, private endpoints, routing, and segmentation. Create reusable network templates, enforce Zero Trust and TIC 3.0 segmentation, integrate Cloudflare edge services, and produce runbooks and operational guidance.

Design, own, and operate front-end network architecture for large-scale AI/GPU infrastructure including DCI, edge, ingress/egress and control-plane. Architect scalable Ethernet, routing, segmentation, and high-availability designs; lead deployments and troubleshooting in new data centers; maintain reference architectures and carrier relationships; collaborate on Kubernetes-centric network solutions and interface with RDMA back-end fabrics.

Design, document, and transition campus/LAN architectures; test changes in a private lab; migrate users with minimal impact; provide Tier III troubleshooting and ops support; develop DISA STIG-compliant secure configurations and obtain ATOs; supervise network specialists and support MPLS WAN work.

Provide Tier 3 O&M support for WAN/LAN networks, perform upgrades, configure and troubleshoot hardware/software, monitor performance and security, support NOC escalations, develop testing and troubleshooting procedures, coordinate installations and configuration management, and recommend COTS/network technologies.

Provide Tier III O&M support for WAN/LAN networks: troubleshoot and upgrade network hardware/software, monitor performance and security, coordinate installations and cutovers, evaluate new technologies, prepare technical proposals and maintain network management records and logs.

Provide Tier III O&M support for WAN/LAN networks: troubleshoot and resolve network issues, perform upgrades, configure and test hardware and software, monitor performance and security, coordinate installations and configuration management, and support NOC operations and network architecture integration.

Provide expert-level service-provider network and systems support in a Managed Services Center. Deliver full lifecycle solutions (design, implementation, troubleshooting), own incidents end-to-end, participate in on-call rotation, lead technical projects, document work in ticketing systems, and collaborate with clients and internal teams to resolve complex networking issues.