Top Senior Network Engineer Jobs in Denver & Boulder, CO

Own end-to-end network reliability across data centers, AWS, and GCP, including routing, switching, DNS, load balancing, service mesh, VPNs, circuits, and cross-connects. Automate network configuration with Ansible, Terraform, GitOps, CI validation, and IPAM. Engineer failover, observability, security hardening, client connectivity, and Kubernetes ingress while participating in an interrupt-contained on-call rotation.

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.

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.

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.

Develop and maintain scalable control-plane software for DigitalOcean’s Network Products team. Build APIs, optimize distributed services, troubleshoot customer-impacting issues, improve monitoring and reliability, and collaborate across networking teams on product development. Contribute to architecture, testing, CI/CD, tooling, best practices, and end-to-end ownership of cloud networking offerings such as LBaaS.

Manage and optimize secure network infrastructure supporting a central service node and remote sites. Configure VPNs, routers, switches, firewalls, encryption devices, and network access systems; administer Cisco Call Manager, SolarWinds, and Microsoft NPS; troubleshoot connectivity issues; support capacity planning, documentation, compliance, and high availability. Provide on-call support and collaborate with IT stakeholders to maintain reliable mission-critical communications.

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.

Maintain, upgrade, integrate, and sustain complex radar network infrastructure supporting Space Force missile surveillance and warning missions. Responsibilities include network and systems design, device and telecom configuration, testing, connectivity, backup and recovery, requirements translation, and technical integration. The role supports PARCS and UEWR systems, national security mission networks, distributed and virtual environments, and engineering change requests. It also may involve Agile or SecDevOps project support, risk management, scheduling, and performance reporting.

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.

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.

Supports USSPACECOM through network planning, architecture, implementation, integration, risk assessment, cybersecurity engineering, technical security assessments, and infrastructure accreditation. Develops communication requirements, technical solutions, architecture drawings, maintenance records, and continuity procedures. Assesses multi-level classification networks, identifies infrastructure gaps, fortifies fiber and Ethernet networks, and advises customers on communication systems and procurement. Maintains security, backup, redundancy, and preventive maintenance strategies while supporting interoperability and compliance with government standards.

Designs, implements, and maintains multi-vendor DoD networks while ensuring system security and regulatory compliance. Responsibilities include network configuration, vulnerability scanning with HBSS and ACAS, RMF compliance, security violation investigation, policy recommendations, patch and upgrade recommendations, COMSEC material tracking, and customer reporting. The role requires collaboration with end users, strong communication, independent judgment, and an active DoD Secret clearance.

Designs, develops, tests, secures, monitors, and optimizes enterprise network solutions. Responsibilities include creating network architectures and schematics, evaluating hardware and software, validating designs, monitoring performance, executing upgrades, advising users, and assessing emerging communications technologies. The role supports mission-critical Defense Intelligence Agency operations and requires extensive experience, advanced network certifications, U.S. citizenship, and an active TS/SCI with polygraph clearance.

The Senior Network Engineer will design, deploy, and troubleshoot advanced network systems, mentor team members, and improve network performance and security.

Designs, implements, maintains, and troubleshoots enterprise network infrastructure across distributed sites. Configures Cisco routers, switches, wireless systems, VoIP, Palo Alto firewalls, VPNs, and related security appliances. Leads complex routing, switching, wireless, and multi-server network projects; supports installations, upgrades, documentation, service restoration, and long-range network planning. Collaborates with IT teams, service providers, and business users while ensuring network security, standards adherence, and successful project delivery.

Designs, implements, maintains, and optimizes scalable FTTH broadband network infrastructure. Configures core network equipment, monitors performance, troubleshoots complex issues, leads root cause analyses, and improves network automation and observability. Implements security and disaster recovery measures, maintains technical documentation, mentors engineering and NOC teams, supports vendor escalations, and contributes to long-term network strategy and technology roadmaps. Participates in an occasional travel schedule and after-hours on-call rotation.

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.

Provide Tier 3 network engineering and operations support across enterprise locations. Responsibilities include network design, implementation, installation, troubleshooting, optimization, documentation, technology testing, incident analysis, and complex problem resolution. Support geographically dispersed sites, network upgrades, routers, switches, cryptographic devices, and DoD STIG implementation. The role requires physical equipment handling, collaboration, independent problem solving, and up to 25% CONUS travel.

Performs Tier 3 network operations engineering for intelligence customers, including network design, implementation, installation, troubleshooting, configuration, documentation, and operational improvements. Leads technical research and testing of hardware and software, develops implementation solutions, and coordinates engineering design activities. Requires travel to operational sites, occasional physical handling of network components, CCNA certification, IAT II certification, and TS/SCI clearance with polygraph eligibility.

Designs, deploys, secures, automates, monitors, and maintains multi-vendor network infrastructure supporting Blue Origin mission operations across multiple sites. Responsibilities include establishing standardized network designs, developing automation frameworks, configuring network devices, resolving performance issues through root-cause analysis, and managing capacity and infrastructure lifecycles across enterprise and industrial environments.

Drives adoption of network automation capabilities through technical workflows, integrations, lab environments, content, demos, training, and thought leadership. Partners with Product, Sales, Solutions, and Marketing teams to shape use cases, enable field teams, support customers and events, and influence product roadmap and market positioning.

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.

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.