Top Senior Network Engineer Jobs in Denver & Boulder, CO

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.

Lead Greenfield and Brownfield customer network deployments and production migrations. Design and troubleshoot advanced routing (BGP, OSPF, MPLS, VRF), implement firewalls (FortiGate, Cisco ASA), and build secure enterprise VPN and SD-WAN architectures. Participate in U.S.-aligned change windows and resolve complex escalations to minimize downtime.

Lead customer network deployments and brownfield migrations, design and troubleshoot advanced routing and VPN architectures, implement and manage Fortinet and Cisco firewall solutions, perform TAC-level debugging (packet captures, device debug), and own production change windows aligned to US hours.

Senior Network Engineer to troubleshoot escalated network incidents, configure and maintain switches/routers/firewalls/wireless, analyze recurring issues, implement changes and optimizations, monitor performance, mentor Tier 1 staff, and maintain network documentation and topology.

Lead network architecture and delivery for MSP engagements across LAN/WAN, SD-WAN, wireless, and network security. Provide pre-sales design, hands-on implementation of Extreme and Fortinet platforms, develop standards and templates, perform network assessments, mentor junior engineers, and represent the practice in client-facing strategy discussions.

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.

Design, build, secure, and maintain resilient enterprise and classified network infrastructure. Support routers, switches, firewalls, DNS/DHCP, perform packet analysis and monitoring, troubleshoot LAN/WAN issues, implement network security controls and segmentation, collaborate with cloud and cybersecurity teams, and produce operational documentation and reporting.

Manage and secure central hub network infrastructure and VPN connectivity, configure and maintain routers, switches, firewalls, and encryption devices, administer Cisco Call Manager, SolarWinds and Microsoft NPS, troubleshoot network issues, perform capacity planning, maintain documentation, ensure compliance with security standards, and provide on-call support for mission-critical operations.

Serve as the CONUS SME and lead technical authority for LAN/WLAN/WAN operations at military hospitals. Provide enterprise engineering, complex troubleshooting across OSI layers, design and modernization guidance, DoD/DHA compliance, firewall/VPN/IDS/IPS/Zero Trust support, performance optimization, stakeholder interfacing, policy development, and mentor network engineering staff.

Design, build, and maintain automated network infrastructure across multi-cloud and hybrid-cloud environments. Develop automation using Itential, Terraform, Ansible, and Python; integrate cloud-native networking and security constructs; automate spine-leaf architectures and security controls; ensure high availability and visibility; mentor team members and collaborate cross-functionally to implement scalable network automation solutions.

The Senior Network Engineer will design, manage, and optimize large-scale data center networks for AI workloads, ensuring reliability and performance.

Serve as cleared senior network SME for DoD medical networks. Lead resolution of complex LAN/WLAN/WAN issues, design and enforce standards, configure firewalls/VPNs/IDS, use SolarWinds/ARMIS/Ansible for diagnostics, advise government stakeholders, lead teams, and support performance, capacity planning, and high-availability across DHA facilities.

Build software at Coinbase while responsibly using and integrating generative AI copilots (e.g., LibreChat, Gemini, Glean). Continuously learn evolving tools, apply human-in-the-loop practices, and deliver business-ready outputs that improve efficiency, cost, and quality. Participate in quarterly in-person working sessions as part of a remote-first culture.

Lead design, implementation, optimization, and support of enterprise and data center networks. Serve as top escalation for complex incidents, drive infrastructure reliability, develop scalable designs, champion architecture and automation, partner with sales and customers, and lead networking projects from inception through post-implementation support.

Manage and support enterprise network infrastructure including firewalls, VLANs, routing/switching, wireless, VPNs and monitoring. Deploy new office network hardware, perform cabling and ISP turn-up, and participate in change management. Provide operational support for Cisco ISE and Firepower environments, troubleshoot using packet-capture tools, maintain documentation, and collaborate with Security, Infrastructure, and End User Services teams.

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.

Support and maintain a mission-critical Cisco-based LAN/WAN for the Texas Department of Criminal Justice. Monitor circuits, troubleshoot router/switch/firewall issues, implement and upgrade Cisco products, perform maintenance and after-hours support, collaborate across teams, and participate in on-call rotations and occasional on-site work.

Lead design, implementation, optimization, and troubleshooting of enterprise networks and hybrid infrastructure. Apply systems engineering and cybersecurity principles, mentor junior staff, evaluate solutions, and support secure facilities and client engagements with ~15-25% travel.

The Sr. Network Engineer designs, implements, and operates cloud and hybrid network infrastructure, emphasizing automation and customer-centric solutions while supporting 24x7 operations.

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.

Support and engineer customer networks for government clients: troubleshoot escalated incidents, configure and maintain switches, routers, firewalls, and wireless infrastructure, analyze recurring issues, implement changes and optimizations, investigate performance/routing/VLAN/subnet problems, monitor network metrics, mentor Tier 1 staff, maintain documentation, and collaborate on projects and migrations.

Design, implement, and maintain services that store and deploy Fastly's network configuration. Build features for infrastructure provisioning and fleet scaling, improve CI/CD and testing, write performant maintainable code, and mentor other engineers while collaborating with operations and infrastructure teams.

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.

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.

Technical lead to design and build an eBPF-based kernel-level internet simulation and control plane. Own XDP/TC hooks, BPF maps, topology database, and lightweight in-range agents. Mentor engineers, set architecture, and productionize a proof-of-concept for multi-tenant cyber range network simulation with realistic ASN routing and traceroute fidelity.