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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr Principal Network Engineer - **Company:** Northrop Grumman - **Location:** Roy, UT, United States - **Experience:** Expert - **Salary:** $111,700.0 - $167,500.0 - **Contract:** Permanent contract - **Skills:** Wireless LAN, Amazon Web Services, Systems Engineering, Automation of Tests, Microsoft Azure, Border Gateway Protocol, Cisco PIX, Cloud Computing, Complex Networks, Cyber Security, Enhanced Interior Gateway Routing Protocol, Trunking, Failover, Monitoring of Systems, Intrusion Detection Systems, Virtual Private Networks (VPN), Multi-protocol Systems, Python (Programming Language), Kernel-Based Virtual Machine, Network Security, Network Layer, Network Planning and Design, Packet Analyzer, Open Shortest Path First (OSPF), Overlay Transport Virtualization, Remote Access Technology, Ansible, Zero Trust Network Access, SAP (Applications), Virtual Local Area Networks, Virtualization Technology, Wide Area Networks, Computer Networking Systems, Postman, Firewalls (Computer Science), Juniper, Information Technology, SolarWinds (Software), Palo Alto Networks, Transport Protocols, Fortinet, Routing & Switching, Restful APIs, Terraform, Open Network Automation Platform, Splunk, Cisco, Network Optimization, Vmware - **Published:** May 16, 2026 - **Apply:** https://www.juju.com/job/00000000g0765j ## About the Role * Bachelor's degree in Computer Science, Information Technology, Engineering, or related discipline and 8+ years of network engineering experience; OR Master's degree and 4+ years of experience; 4 additional years of related experience may be used in lieu of a degree. * Expert-level experience with enterprise networking technologies including: * Routing & switching (Cisco/Juniper/Arista) * BGP, OSPF, MPLS, VPN, STP, VLANs, trunking * Layer 2-3 troubleshooting and packet analysis * Hands-on experience with firewalls and network security technologies (Palo Alto, Cisco ASA/FTD, Juniper SRX, etc.). * Experience designing and maintaining high-availability environments, redundant architectures, and failover systems. * Strong understanding of DoD/IC networking requirements, DISA STIGs, encryption devices, and secure transport protocols (modify if non-DoD). * Ability to develop and maintain detailed technical documentation and architectural artifacts. * Must be a US Citizen and have an active U.S. security clearance (minimum of [Secret / TS / TS/SCI]), must also have the ability to obtain Special Program Access (SAP) within a reasonable time period. * Excellent communication skills and the ability to brief senior leadership and technical stakeholders. Preferred Qualifications: * Cisco CCNP, CCIE, Juniper JNCIP/JNCIE, or similar expert-level certifications. * Experience with SD-WAN solutions, such as Cisco Viptela, Meraki, Fortinet, or Juniper. * Hands-on experience with network automation (Python, Ansible, Terraform, Postman, REST APIs). * Background in designing/implementing Zero Trust, microsegmentation, or identity-driven access architectures. * Experience supporting classified networks, cross-domain solutions, and NIST 800-171/53 compliance. * Familiarity with virtualization platforms (VMware, KVM), hyperconverged systems, and cloud networking (AWS, Azure GovCloud). * Experience with monitoring tools such as SolarWinds, Splunk, Elastic, Cisco DNA Center, or equivalent. * Demonstrated leadership experience in project management, engineering oversight, or technical authority roles. * Proven ability to architect scalable solutions for multi-site, distributed enterprise environments. ## Description We are seeking a highly experienced Senior Principal Network Engineer (T4) to join our advanced systems engineering and enterprise infrastructure team. In this role, you will function as a senior technical expert responsible for designing, implementing, securing, and optimizing complex network architectures that support mission-critical operations. You will support cross-functional engineering efforts, provide deep technical guidance, mentor junior engineers, and ensure our networked systems meet stringent performance, reliability, and cybersecurity requirements. This position requires strong analytical skills, technical leadership, and the ability to operate in a fast-paced, secure environment supporting key stakeholders and high-visibility programs. This position will be located in Roy, Utah and support the Sentinel Program. Your responsibilities will also include: + Lead the design, architecture, deployment, and sustainment of large-scale enterprise, tactical, and datacenter networks (LAN/WAN/WLAN). + Develop high-level and detailed network design documents, topology diagrams, and engineering implementation plans. + Configure, manage, and optimize technologies including BGP, OSPF, EIGRP, MPLS, VXLAN, EVPN, SD-WAN, and QoS mechanisms. + Oversee Layer 2/Layer 3 switching and routing infrastructure from vendors such as Cisco, Juniper, Palo Alto, Arista, etc. + Perform capacity planning, network performance analysis, and advanced troubleshooting for critical infrastructure. + Implement and validate network security mechanisms including firewalls, IPS/IDS, segmentation, VPN technologies, and compliance with NIST/DoD cybersecurity controls. + Conduct fault isolation, root-cause analysis, and develop corrective action plans for systemic issues. + Develop automation scripts and tools (Python, Ansible, Terraform) to improve operational efficiency. + Maintain configuration baselines, engineering documentation, and lifecycle roadmaps. + Lead technical reviews, risk assessments, and contribute to proposals, cost estimates, and engineering trade studies. + Collaborate with program leadership, cybersecurity, systems engineering, software, and operations teams to ensure cohesive network integration and alignment with mission requirements. + Provide technical mentorship to mid-level and junior engineers, fostering internal growth and knowledge sharing. + Support 24/7 operational environments as required, including on-call or after-hours support for critical changes or incidents. ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [Our journey with Spring Boot in a microservice architecture](https://www.wearedevelopers.com/videos/511-our-journey-with-spring-boot-in-a-microservice-architecture) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Generating code with Angular schematics](https://www.wearedevelopers.com/videos/129-generating-code-with-angular-schematics) ## Related Articles - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers)