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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Engineer - **Company:** Leidos, Inc. - **Location:** San Diego, CA, United States (Remote available) - **Experience:** Expert - **Salary:** $92,000.0 - $167,000.0 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Amazon Web Services, Apple IOS, Apple Mac Systems, Border Gateway Protocol, Spanning Tree Protocols, Cisco Unified Communications Manager, Catalyst (Software), Cloud Computing, Complex Networks, Cyber Security, Computer Networks, Failover, Virtual Private Networks (VPN), Internet Service Provider, Junos, Network Troubleshooting, Network Architecture, Network Diagrams, Network Connections, Network Planning and Design, Routing, Open Shortest Path First (OSPF), Remote Access Technology, Web Application Security, Virtual Local Area Networks, Virtualization Technology, VMware VSphere, Wide Area Networks, Wireless Networks, Cisco Anyconnect, Wi-Fi Technology, Computer Networking Systems, Identity Services Engine, Network Access Control, Load Balancing, Cloud Platform System, Computer Network Technologies, Reliability of Systems, HybridCloud, Firewalls (Computer Science), Amazon Virtual Private Cloud (VPC), Juniper, Virtual Computing, Information Technology, Hardware Infrastructure, Firepower, Firewall Services Module, Open Network Automation Platform, Cisco, Servicenow, Vmware - **Published:** October 16, 2026 - **Apply:** https://www.builtincolorado.com/job/senior-network-engineer/11713449?handler=ApplyRedirect ## About the Role * Must have or able to obtain a Public Trust clearance; Must be a US Citizen., * Bachelor's degree in Information Technology, Computer Science, Engineering, or a related technical field with 8+ years of relevant network engineering experience; additional education and experience equivalencies may be considered. * Advanced hands-on experience designing, implementing, administering, and troubleshooting complex enterprise network infrastructure in production environments. * Expert-level knowledge of enterprise routing and switching technologies, including BGP, OSPF, VLANs, VRFs, and network redundancy and failover. * Demonstrated experience developing and implementing technical solutions to complex network problems involving multiple systems, technologies, or engineering disciplines. * Hands-on experience configuring, maintaining, and troubleshooting enterprise network security infrastructure, including firewalls, access control policies, and VPN connectivity. * Experience supporting Cisco and/or Juniper enterprise networking platforms in complex, multi-vendor environments. * Experience designing, implementing, or supporting hybrid cloud network connectivity between on-premises infrastructure and AWS environments. * Demonstrated experience independently leading complex network troubleshooting, root cause analysis, and corrective action efforts. * Experience planning and executing network infrastructure changes, upgrades, and security remediation activities in production environments. * Demonstrated ability to develop technical recommendations, communicate complex technical information, and collaborate with customer stakeholders, engineering teams, vendors, and service providers. * Experience producing and maintaining network diagrams, technical documentation, configuration standards, and implementation procedures. * Strong communication skills, with experience collaborating directly with customers, vendors, and ISPs to support network design, troubleshooting, and issue resolution. * Hands-on experience with Juniper EX/QFX & Junos OS, Cisco ISR & IOS devices, ASA, Firepower & FMC. * Demonstrated experience with routing/switching protocols (e.g., BGP, `OSPF, VRF) and core infrastructure services. * Hands-on experience managing AWS network infrastructure and hybrid cloud connectivity (e.g., VPC, direct-connect, transit gateways, load balancers) between on-prem and cloud environments. * Experience with remote access VPN solutions, including Cisco AnyConnect/Secure Client configuration and support. * Experience with virtual computing/virtualization platforms (e.g., VMware/vSphere) as they relate to network design and connectivity. * Experience with wireless infrastructure and NAC solutions (e.g., Cisco ISE). * Experience with Cisco CUCM/UC voice solutions. * * Able to obtain a baseline 8140 certification [(IAT Level II) CCNA-Security, CySA+, GICSP, GSEC, Security+ CE, CND, SSCP] within 90 days. PREFERRED QUALIFICATIONS: * Cisco Certified CCNA * Cisco Certified CCNP or Juniper JNCIP-ENT. * Experience with Cisco Meraki wireless solutions. * Experience with Cisco ISE. * Experience with Dell switches and OS10. * Experience with ServiceNow. * Security+ CE certification. ## Description The Senior Network Engineer will serve as a senior technical contributor responsible for designing, implementing, optimizing, and sustaining complex network solutions spanning on-premises infrastructure and hybrid cloud environments. The position requires technical expertise, independent problem-solving, and the ability to develop effective solutions to complex network challenges involving multiple technologies and technical disciplines. The successful candidate will collaborate with customer stakeholders, engineering teams, cybersecurity professionals, and program leadership to maintain network availability, performance, and security while supporting infrastructure modernization and evolving mission requirements. This role also provides technical guidance to other engineers and contributes to network architecture, engineering standards, and continuous operational improvement., * Serve as a Senior technical and escalation resource for complex network engineering and operational issues affecting mission-critical enterprise infrastructure. * Lead the planning, design, implementation, and optimization of complex network infrastructure solutions across geographically distributed, multi-vendor environments. * Independently analyze complex technical challenges involving multiple systems and disciplines, develop engineering solutions, and implement corrective actions that improve network reliability, performance, and security. * Design, configure, maintain, and troubleshoot enterprise routing and switching infrastructure, including BGP, OSPF, VLANs, VRFs, routing redundancy, and network failover. * Engineer and support enterprise network security solutions, including Cisco Firepower, Firepower Management Center (FMC), ASA, firewall policies, access controls, and security hardening. * Design, implement, and sustain secure site-to-site and remote-access VPN solutions, including Cisco Secure Client/AnyConnect and connectivity with external partners and vendors. * Engineer and maintain hybrid cloud network connectivity integrating on-premises infrastructure with AWS networking services, including VPCs, Direct Connect, Transit Gateway, and load balancing. * Support enterprise wireless networking and network access control technologies, including Cisco Identity Services Engine (ISE). * Lead technical planning and execution of network infrastructure upgrades, modernization initiatives, lifecycle replacements, and security remediation activities. * Evaluate network performance, availability, capacity, and emerging technical requirements; recommend and implement improvements to strengthen service delivery and operational resilience. * Lead complex incident investigations and root cause analysis, identifying systemic issues and developing sustainable corrective and preventive solutions. * Collaborate with customer representatives, program leadership, cybersecurity teams, vendors, and service providers to assess requirements, develop technical solutions, and influence network engineering decisions. * Develop and maintain network architecture documentation, configuration standards, technical implementation plans, and operational procedures. * Support incident, problem, change, and service request management processes while ensuring technical accuracy, documentation, and operational accountability. * Provide technical mentorship, peer review, and engineering guidance to junior and mid-level network engineers. * Identify opportunities for network automation, standardization, and process improvement to increase operational efficiency, reliability, and security., Designs, implements, and operates multi-region cloud and hybrid networking infrastructure. Develops Terraform modules and infrastructure standards, supports AWS architectures, cloud migrations, and data center exits, and contributes to architecture reviews, compliance-aware delivery, CI/CD enablement, documentation, and observability. Collaborates with platform, security, architecture, compliance, and engineering teams to improve scalability, automation, reliability, and operational efficiency. Top Skills: AIArgocdAWSAws Network FirewallCi/CdCisco CcnaCisco CcnpDatadogGitlab Ci/CdGitopsHelmIamKubernetesLlmNetwork MonitoringObservabilityOctopus DeployTerraformTransit GatewayVpc Spectrum San Diego Senior Network Engineer Yesterday Remote Pearl Harbor, HI, USA Senior level Senior level Security Designs, deploys, configures, tests, monitors, and maintains Air Force and Department of War network systems, including secure and exercise networks. Implements upgrades, patching, and security compliance; troubleshoots network issues; coordinates with USAF planners and external organizations; and reports project status to government officials. Supports enterprise Cisco networking, routing, VTC, virtualization, and encryption technologies. Top Skills: BgpBroadcastCcnaCcnpCisco Call ManagerCisco Dna CenterCisco FirewallsCisco Identity Service EngineCisco Meeting ServersCisco NexusCisco Web Security ApplicationsEigrpEsxiKg-175MS OfficeMulticastNatNiprnetOspfSharepointSiprnetTeamsUnicastVcenterVisioVrfVsphereVtc Copeland Senior Network Engineer 4 Days Ago In-Office or Remote Senior level Senior level Greentech Leads global wireless network architecture, design, implementation, and Level IV operational support. Provides technical leadership for Wi-Fi, LAN, WAN, SD-WAN, firewalls, routing, and switching environments; mentors operations teams; evaluates network technologies; automates administrative tasks; manages vendors; monitors performance; performs root-cause analysis; supports installations and service restoration; and develops technical documentation and training. Top Skills: BgpCiscoCisco Catalyst CenterCisco Cloud CenterCisco DnacCisco IqCisco IseCisco PrimeDhcpDnsEigrpFirewallsLanOspfRfSd-WanSolarwindsVisioVlanWanWi-Fi What you need to know about the Colorado Tech Scene With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation. Key Facts About Colorado Tech * Number of Tech Workers: 260,000; 8.5% of overall workforce (2024 CompTIA survey) * Major Tech Employers: Lockheed Martin, Century Link, Comcast, BAE Systems, Level 3 * Key Industries: Software, artificial intelligence, aerospace, e-commerce, fintech, healthtech * Funding Landscape: $4.9 billion in VC funding in 2024 (Pitchbook) * Notable Investors: Access Venture Partners, Ridgeline Ventures, Techstars, Blackhorn Ventures * Research Centers and Universities: Colorado School of Mines, University of Colorado Boulder, University of Denver, Colorado State University, Mesa Laboratory, Space Science Institute, National Center for Atmospheric Research, National Renewable Energy Laboratory, Gottlieb Institute