network-administration jobs in San Diego

Design, assess, and troubleshoot enterprise network security environments using Cisco security technologies, with expertise in Firepower Threat Defense (FTD), Firepower Management Center (FMC), and Identity Services Engine (ISE). Implement network access control, TrustSec segmentation, threat prevention controls, and secure deployments across on-premises, campus, data center, and cloud environments.…See more Develop client-facing security architectures integrating Cisco platforms with SIEM tools and automation solutions, delivering technical assessments, target-state architectures, and implementation roadmaps. Lead projects and workstreams while managing multiple priorities in a fast-paced consulting environment.

ManTech seeks a Systems Administrator to support national security infrastructure in San Diego, maintaining Windows servers, domain controllers, cloud resources, and VMware environments. The role combines network and systems administration, including configuring cryptographic network encryptors (TACLANE), troubleshooting site outages, performing vulnerability remediation with ACAS/Nessus, and managing user accounts.…See more Requires a Bachelor's degree with 4+ years of IT experience (or equivalent), DoD 8570 IAT Level II compliance, and 2+ years as a Network or Systems Administrator with enterprise Windows infrastructure expertise. Travel up to 25% and an active Top Secret/SCI clearance with polygraph eligibility are required.

A senior engineer responsible for designing, implementing, and managing Zscaler zero-trust security solutions across the organization's network infrastructure. The role involves monitoring security configurations, conducting risk assessments, responding to security incidents, ensuring compliance with standards like GDPR and HIPAA, and providing guidance to internal teams.…See more Requires 3+ years of network security experience, deep knowledge of Zscaler (ZIA and ZPA), network security best practices, and familiarity with compliance frameworks and cloud platforms.

The Network Administrator will operate, maintain, and troubleshoot network connectivity and infrastructure on the Navy Enterprise Tactical Training Network (NETTN), supporting multiple networks across different classification levels. Responsibilities include managing routers, switches, firewalls, WAN circuits, VoIP devices, and cryptographic configurations; coordinating with Navy, DISA, and commercial providers; maintaining Information Assurance compliance; and providing helpdesk support from the Network Operations and Security Center (NOSC).…See more The role requires hands-on expertise in network hardware, software interconnection, and troubleshooting of network failures at remote sites.

Senior Network Engineer with 8+ years of experience designing, implementing, and managing cloud networking solutions across AWS and Azure, alongside enterprise network infrastructure (WAN/LAN/WLAN, Cisco, Meraki, Palo Alto). The role spans hybrid connectivity, network security controls, performance monitoring, and basic automation using Python and Ansible to improve operational efficiency.…See more Requires hands-on expertise in cloud platforms, routing/switching, firewalls, and observability tools like ThousandEyes and Splunk.

Senior Network Engineer/Architect responsible for designing, engineering, and modernizing large-scale enterprise wired, wireless, core, WAN, data center, and research network architectures at a major university. Lead complex infrastructure projects from requirements through deployment, serve as senior escalation for advanced routing, switching, wireless, and performance issues, and provide technical direction to engineering teams.…See more Develop architecture standards, reference designs, and technical runbooks while evaluating emerging networking, cloud, wireless, automation, and security technologies. Requires deep expertise in enterprise routing/switching (BGP, OSPF, IPv4/IPv6, segmentation, high availability), hands-on network observability and packet analysis, and proven success leading large-scale network modernization and lifecycle initiatives.

Design, implement, and sustain Cisco ISE/NAC solutions for Navy shipboard networks, including 802.1X authentication, policy enforcement, and endpoint profiling. Develop automation tooling using Ansible and Powershell to support network sustainment and upgrades across multiple CANES-based configurations.…See more Evaluate and implement security hardening (STIGs) on network appliances, troubleshoot Cisco platforms (routers, switches, firewalls, wireless), and support Engineering Change Requests within Agile/DevOps practices. Requires 3+ years of network/systems engineering experience, preferably with DoD or Navy program support, and an active Secret clearance.

Design and engineer Navy networks by developing network topologies, templates, and IP plans from system requirements. Configure and document software-defined WAN solutions using technologies like SDN/SD-WAN (VMware NSX-T, Cisco, Juniper).…See more Troubleshoot network outages, manage L2/L3 switching and routing, and create comprehensive technical documentation. The role requires a CCNP certification, six years of DoD/federal IT systems engineering experience, and an active Secret clearance.

This role provides engineering sustainment support for shipboard networks, including troubleshooting, configuration management, and security hardening across Cisco ISE/NAC platforms in Navy environments (CANES). The engineer will develop automation tooling using Ansible and PowerShell, implement STIGs and security policies, lead network baseline upgrades, and manage Engineering Change Requests within DevOps and Agile workflows.…See more Requires 3–5 years of network/systems engineering experience with DoD or Navy programs, active Secret clearance (TS/SCI preferred), Security+ or CCNA certification, and hands-on expertise in Cisco routers, switches, firewalls, and wireless infrastructure.

Network Automation Engineer supporting DoD/Navy shipboard network deployments. Implement and sustain Cisco ISE/NAC solutions with 802.1X, MAB, AAA, RADIUS, TACACS+, and TrustSec policies.…See more Develop automation tooling via Ansible playbooks and PowerShell scripts for network sustainment. Troubleshoot Cisco platforms (routers, switches, firewalls, wireless, AnyConnect) within CANES environments, evaluate and mitigate STIGs, process ECRs, and collaborate on change management within Agile/DevOps practices.

ManTech seeks a Systems Administrator to maintain critical national security enterprise infrastructure in San Diego, working a 0100–0900 morning shift with on-call support. Responsibilities include administering Windows servers, domain controllers, cloud resources, and VMware environments; configuring and troubleshooting TACLANE cryptographic network encryptors; performing patch management, vulnerability remediation (ACAS/Nessus), and system hardening; and managing user accounts and ticketing incidents.…See more Requires a bachelor's degree with 4+ years of IT experience (or equivalent substitution), DoD 8570 IAT Level II compliance (Security+ CE or equivalent), 4+ years of enterprise Windows infrastructure design/deployment, and hands-on TACLANE encryptor experience. Up to 25% travel (CONUS and OCONUS) is required.

This role provides engineering sustainment and support for fielded shipboard networks, with a focus on Cisco ISE/NAC solutions, network security (STIGs), and automation. The engineer will troubleshoot and maintain multiple Cisco platforms (routers, switches, firewalls, wireless), develop Ansible playbooks and PowerShell scripts for network automation, and support Navy CANES and related environments.…See more The position requires hands-on experience with Cisco ISE, network security fundamentals, automation tooling, and familiarity with Agile/DevOps practices and change management workflows.

Network engineer responsible for designing, configuring, and sustaining mission-critical networked systems for DoD/government customers. Will engineer Cisco, Aruba, Juniper, and other switching/routing/firewall platforms; support full system lifecycle from staging through fielding and sustainment; implement secure architectures aligned with RMF and STIGs; and conduct site surveys, deployments, and troubleshooting in labs, shore facilities, and deployed environments.…See more Requires minimum 8 years of hands-on network engineering experience, DoD Secret clearance, relevant vendor certifications (CCNA/JNCIA or higher), and DoD 8570/8140 baseline security certification (Security+ CE minimum).

Sr. Network Engineer responsible for designing, implementing, managing, and troubleshooting UC San Diego Health's computer networks.…See more Role requires expert-level experience with Cisco wireless platforms (C9800 Controllers), routing and switching protocols, Cisco Security tools (ISE - Trustsec/NAC), Palo Alto firewalls, and network diagnostic tools. Responsibilities include configuring routers, switches, and firewalls; monitoring network traffic; diagnosing outages; and ensuring reliable connectivity and security across campus and medical center infrastructure.

Network engineer providing advanced engineering, integration, and sustainment support for Navy AT/FP systems across global installations. You will engineer, configure, and sustain Juniper, Aruba, Cisco, and Cambium networking equipment; support end-to-end system lifecycle from staging through fielding; implement secure architectures aligned with RMF and STIGs; and conduct site surveys, installations, and operational verification during 50%+ travel.…See more Requires active interim Secret clearance with ability to obtain fully adjudicated clearance, Bachelor's degree with 5 years' experience (or HS/GED with 8 years), DoD 8570/8140 baseline certification, and hands-on experience with Juniper Junos, Aruba, and Cisco platforms.

Network Engineer (Level II) supporting U.S. Navy lab development efforts in San Diego, designing, installing, maintaining, and managing complex network systems that integrate multiple computing platforms and topologies.…See more Responsibilities include infrastructure planning and upgrades, lab testing coordination, data collection using specialized equipment (oscilloscopes, BERTs, network analyzers), troubleshooting, and cross-functional collaboration with systems engineering, cyber security, and program teams. Requires a Bachelor's degree in Engineering, Computer Science, Physics, or Mathematics; excellent problem-solving and communication skills; and experience with network integration, ADNS systems, and mission-critical application support.

Senior Linux administrator responsible for managing UNIX-based physical and virtual infrastructure across complex heterogeneous environments at Qualcomm's San Diego headquarters. The role requires hands-on expertise in Red Hat Enterprise Linux, Ubuntu, and SUSE, with demonstrated proficiency in deploying and configuring enterprise hardware (HP, Dell, Super Micro servers), storage technologies (SAN, RAID), and containerization platforms.…See more Key responsibilities include datacenter operations, server patching and package management, clustering (Veritas, Pacemaker), infrastructure automation via Ansible, and serving as an escalation point for technical issues affecting production systems. This is a full-time onsite position (5 days/week) requiring 3+ years of IT experience with a Bachelor's degree, or 5+ years without one.

SAIC seeks a Network Engineer to support U.S. Navy cyber operations, providing engineering and technical support for the CND Deployer Toolkit and Defensive Cyber Operations Infrastructure.…See more Responsibilities include production integration, system design and architecture, DCO enclave technology implementation, interoperability testing, RMF compliance, site surveys, and Sensor2 system installations at Navy facilities. The role requires hands-on experience with Juniper SRX firewalls, Cisco routers/switches, IPsec/VPN tunnels, network design, and cybersecurity standards (STIGs, Security Controls); a Secret clearance, IAT Level II certification (Security+), and CCNA/CCNP/Network+ are mandatory.

A Systems Network Engineer II/III role supporting naval and operational network environments, responsible for designing, implementing, and troubleshooting resilient network architectures while ensuring cybersecurity compliance and risk mitigation. The engineer will assess vulnerabilities, document configuration and design changes at line-level detail, coordinate engineering change and cyber authorization processes, and provide both on-site shipboard support and remote technical guidance.…See more The role requires expertise in network architecture, tactical data links, WAN design, cybersecurity policy, and Assessment & Authorization practices, with coordination across cloud, computer engineering, cybersecurity, and operational teams.

Senior systems administrator responsible for managing installation, configuration, updates, monitoring, and troubleshooting of enterprise and tactical IT infrastructure. Lead security hardening efforts aligned with CMMC and DISA STIG standards, vulnerability remediation, backup/recovery procedures, and network infrastructure including routers, firewalls, and VPNs.…See more Provide technical leadership to teams of administrators and coordinate across cybersecurity, engineering, and program stakeholders. Support tactical data pipelines, containerized workloads, and edge server environments.

This role supports the U.S. Navy's Cyber Defensive Operations by installing, configuring, troubleshooting, and maintaining network infrastructure equipment and cabling.…See more Responsibilities include layer-one site surveys, fiber optic cabling installations, hardware assembly and integration, production system support, and on-site technical assistance for servers, storage, and network equipment. The position requires hands-on network engineering experience, familiarity with Linux/RHEL, and relevant security certifications (Security+, Network+). Travel up to 50% (CONUS and OCONUS) and on-site work at NAVWAR Old Town Campus in San Diego are required.

A senior network systems engineer responsible for designing, implementing, and maintaining enterprise network infrastructure including routing, switching, firewalls, and wireless systems. The role involves configuring and securing HPE Aruba and Palo Alto solutions, managing routing protocols (OSPF, BGP), implementing NAC and Zero-Trust architectures, and conducting network validation testing.…See more Requires 10+ years of network engineering experience, a bachelor's degree in a technical discipline, and an active Secret clearance with one of six specified IAT Level II certifications (Security+, CySA+, CCNA Security, GICSP, GSEC, or SSCP).

The Cryptographic Test Engineer & Network Engineer will perform configuration, functional, and performance testing of cryptographic devices in military network systems, determine operational suitability, and develop test reports. The role requires hands-on experience with networking fundamentals (routing, Cisco IOS, VPNs), Linux/CentOS administration, cryptographic device management, PKI/key management systems, VPN tunneling, SSH, and security monitoring tools like Snort.…See more This is a 100% onsite, full-time position in San Diego supporting Navy operations.

Design, architect, and evolve highly available enterprise network infrastructure across wired, wireless, core, WAN, data center, and cloud environments. Lead complex Layer 2/3 engineering including routing, switching, segmentation, and high-availability systems; serve as technical escalation for advanced troubleshooting and root-cause analysis.…See more Direct university-wide network modernization projects from requirements through deployment and operational transition, coordinating across IT teams, campus partners, vendors, and service providers. Develop network architecture strategies, multi-year roadmaps, standards, and provide technical mentorship to junior engineers.

Senior network architect and engineer responsible for designing, evolving, and modernizing SDSU's enterprise wired, wireless, core, WAN, data center, and research networks. Lead complex infrastructure projects from architectural design through deployment and operational transition, serve as technical escalation resource for advanced routing, switching, and wireless issues, and mentor network engineering staff.…See more Required skills include large-scale enterprise network architecture, advanced routing/switching (BGP, OSPF, IPv4/IPv6, segmentation, high availability), hands-on packet/protocol analysis, RF engineering, and vendor platform expertise (Aruba, Palo Alto Networks, Infoblox, ClearPass). Develop architecture standards, technical documentation, and evaluate emerging networking technologies.