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.

Senior Network Engineer responsible for designing, configuring, securing, and automating data center and software-defined networks supporting DoD and Missile Defense Agency environments. The role focuses on Cisco Nexus EVPN-VXLAN fabrics, VMware NSX, F5 load balancing, Versa SD-WAN, Infoblox DDI, Zero Trust controls, infrastructure automation, compliance hardening, tier-3/4 troubleshooting, technical documentation, and integration with government and contractor teams.

Leads enterprise network engineering and infrastructure operations across routers, switches, firewalls, load balancers, VoIP, servers, virtualization, storage, and security technologies. Troubleshoots complex WAN and LAN environments, manages upgrades, disaster recovery, business continuity, security controls, vendor relationships, and infrastructure projects. Supports a 24x7 distributed mission-critical environment, documents systems, follows change management, and provides escalated technical support.

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.

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.

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.

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.

Designs, develops, and operates software-defined networking infrastructure for Azure datacenters using SONiC. Responsibilities include network and distributed-systems design, coding, debugging, performance optimization, telemetry, reliability engineering, production deployment, live-site accountability, incident response, and mentoring engineers. The role supports high-speed switches and routers, SDN technologies, containerized systems, and large-scale cloud network operations.

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.

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.

Provides advanced network engineering and firewall expertise in a managed services environment. Owns complex incident resolution, root cause analysis, network project delivery, solution design, implementation, change validation, Palo Alto configuration, network hardening, legacy environment optimization, documentation, and technical mentorship. The role is remote from Brazil and requires fluent English, extensive enterprise networking experience, and deep Palo Alto Networks expertise.

Designs, develops, tests, documents, and maintains moderate to complex business applications. Analyzes requirements, creates system designs, identifies dependencies, estimates development effort, and supports integration across applications, databases, and technology platforms. Provides technical guidance, leads development walkthroughs, ensures adherence to software quality and security standards, and recommends improvements to planning, design, development, and testing processes.

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.

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 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.

Designs, leads, and supports enterprise network security and infrastructure solutions. Responsibilities include network engineering, NAC, IAM, ZTNA, VPN, certificate and PKI management, secure connectivity, identity-driven access controls, segmentation, highly available distributed environments, platform upgrades, lifecycle management, and capacity planning. The role also evaluates technology solutions and leads cross-functional initiatives focused on performance, reliability, scalability, and capacity.

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.

Own portfolio-wide data center network architecture, structured cabling, security, OT segmentation, colocation connectivity, commissioning, and production operations. Design standards and construction specifications, review contractor work, manage monitoring, changes, capacity, incidents, and documentation, and serve as the escalation point for live-site network issues. The remote role requires heavy travel to active construction and commissioning sites.

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.