network-administration jobs in San Diego

As a Network Engineer supporting Navy installations, you will engineer, configure, and sustain advanced networking equipment (Juniper, Aruba, Cisco) across NIWC Pacific and shore facilities. You'll manage the complete system lifecycle from staging through sustainment, implement secure network architectures aligned with RMF and STIGs, and support both lab and field deployments with 50%+ travel.…See more The role requires hands-on expertise with routing protocols, VLANs, VPNs, firewalls, and wireless deployments, along with DoD 8570 baseline certification and an active Secret clearance.

This is an Enterprise Architect role within Naval Information Warfare Systems Command responsible for designing, evaluating, and securing enterprise network architectures at an advanced proficiency level. The incumbent will conduct vulnerability scans and configuration analyses, integrate cybersecurity requirements across acquisition lifecycle phases, and oversee the security posture of large-scale DoD information systems.…See more The role requires a minimum of one year of specialized experience at the GS-12 equivalent level and mandates obtaining and maintaining DoDM 8140.03 Cyber Workforce qualifications.

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 Antaira networking equipment; deploy and troubleshoot networks in labs, shore facilities, and data centers; implement secure network architectures aligned with RMF and STIGs; and conduct site surveys and operational verification testing during 50%+ travel.…See more Requires active interim Secret clearance with ability to obtain fully adjudicated Secret clearance, bachelor's degree plus 5 years experience (or HS diploma plus 8 years), DoD 8570/8140 baseline certification (Security+ CE or higher), and hands-on experience with Juniper, Aruba, and Cisco platforms.

Hands-on technical lead role managing data center operations at Naval Base Point Loma, supporting mission-critical infrastructure. Responsibilities include coordinating rack and stack activities, hardware installations and decommissioning, structured cabling, LAN/WAN/BAN infrastructure projects, and troubleshooting operational issues.…See more Requires active Secret clearance, IAT Level II certification, and 5+ years of data center operations or network infrastructure experience. Preferred experience with Cisco and Juniper equipment, VMware/vSphere, and Windows-based environments.

The Communications Specialist II provides technical and operational support for Advanced Tactical Data Link (ATDL) systems, with expertise in cryptographic integration, Communications Security (COMSEC), and network interoperability. Responsibilities include configuring and fielding secure communication systems, troubleshooting system issues, evaluating network architectures, and delivering training to operators and maintainers.…See more The role requires minimum 2 years of experience with Tactical Data Links and COMSEC systems, an active Top Secret clearance with SCI eligibility, and familiarity with systems such as Link 16 and MIDS JTRS. Travel to both CONUS and OCONUS locations is required.

Senior Network Specialist will install, configure, and support LAN/WAN and Internet systems for a large DOD program. Responsibilities include routine testing and analysis of network facilities, monitoring network availability, troubleshooting performance issues, and performing maintenance.…See more Requires 6+ years of experience with Cisco networking equipment (routers and switches), IPv6 protocol expertise, and level 3 network protocol knowledge.

Senior Linux System Administrator role supporting a large DOD program, responsible for installing, configuring, and maintaining LAN/WAN and Internet systems. Will monitor network availability, perform maintenance, assist in network modeling and analysis, and administer network security measures.…See more Requires 4+ years of experience with a Bachelor's degree (or equivalent), strong Linux expertise, and Security+ certification.

Network Engineer responsible for engineering, configuring, and sustaining mission-critical networked systems including Cisco, Aruba, Juniper, and Cambium equipment. The role spans the full system lifecycle—staging, integration, testing, fielding, and sustainment—with emphasis on secure network architectures aligned with RMF and STIGs, vulnerability remediation, and compliance validation.…See more You will deploy and troubleshoot networks in NIWC labs, shore facilities, and data centers, conduct site surveys and installations, and interface with government customers, program managers, and cybersecurity teams. Minimum 8 years of DoD or enterprise network engineering experience, hands-on expertise with Juniper (Junos OS, EX/QFX/SRX), Aruba (ArubaOS, Instant AP, Aruba Central), and Cisco (Catalyst, ISR, ASA, Firepower) required; DoD 8570/8140 certification (Security+, CISSP, CASP+, or higher) and relevant vendor certifications (JNCIA/CCNA or higher) mandatory.

SAIC seeks a Network Engineer to provide break/fix IT support and cybersecurity patching for U.S. Navy afloat networks in a shipboard environment.…See more The role involves troubleshooting LAN/server/network issues, performing root-cause analysis, administering Cisco switches/routers and Windows/Linux systems, and delivering technical briefs to Active Duty and government personnel. Requires 1+ years supporting military networks, active Secret clearance, DoD IAT Level II certification, and ability to obtain TS/SCI.

As a Network Engineer supporting Navy AT/FP systems at NIWC Pacific, you will engineer, configure, and sustain Juniper, Aruba, and Cisco networking equipment across CONUS and OCONUS installations. You'll design and implement secure network architectures compliant with RMF and STIGs, perform system hardening and vulnerability remediation, and support end-to-end lifecycle activities from staging through fielding.…See more The role requires hands-on expertise in switching, routing, wireless, VPNs, and firewalls, with 50%+ travel to shore facilities and data centers. You must hold an active interim Secret clearance with ability to obtain a fully adjudicated Secret clearance, plus DoD 8570/8140 baseline certification (Security+ CE or higher, and Juniper JNCIA or Cisco CCNA or higher).

Senior Network Engineer supporting U.S. Navy afloat (shipboard) networks, providing break/fix IT support, cybersecurity patching, and technical troubleshooting in a fast-paced military environment.…See more Requires hands-on administration of Cisco switching/routing, Windows Server, and Linux systems; root-cause analysis; and coordination with Active Duty personnel and government staff. Must hold an active Secret clearance, be able to obtain TS/SCI, and meet DoD IAT Level II certification requirements. Role includes 25% travel, frequent onsite shipboard support, and occasional after-hours availability.

SAIC seeks a senior network engineer to provide break/fix IT support and cybersecurity patching for U.S. Navy afloat networks aboard ships in a hybrid/remote role based in San Diego.…See more The role requires hands-on administration of Cisco switches/routers, Windows Server, and Linux systems; root-cause analysis and troubleshooting of LAN issues; and delivery of server and network support in a fast-paced shipboard environment. Requires an active Secret clearance and ability to obtain TS/SCI, DoD IAT Level II certification, and 5+ years of experience with military network environments. Travel up to 25% and occasional after-hours support are expected.

Senior IT Specialist supporting USSOCOM enterprise operations, providing Tier 1–2 network and systems administration across 70,000+ global users. Responsibilities include installation, configuration, troubleshooting, and lifecycle management of LAN/WAN routing, switching, and systems infrastructure (routers, switches, encryption devices, PCs, phones, VTCs).…See more Must demonstrate strong technical troubleshooting and diagnostic skills, comprehensive knowledge of government hardware/software/network components, and ability to prepare technical implementation plans and coordinate with networking and systems teams.

Network Engineer supporting Department of War enterprise missions will design, deploy, integrate, and troubleshoot complex network infrastructures across data centers, campuses, tactical environments, and remote locations. The role requires hands-on experience with enterprise routing, switching, VLANs, routing protocols (OSPF, BGP), network security (firewalls, ACLs, AAA), and integration testing in cross-functional environments.…See more Must hold or obtain Secret clearance and possess CompTIA Security+ and Cisco CCNA certifications. The position involves configuring multi-vendor systems, developing technical documentation, and modernizing resilient, secure enterprise networks supporting critical national security missions.

This Systems Network Engineer II/III role focuses on designing, implementing, and sustaining network systems across shipboard, enterprise, and tactical environments while ensuring cybersecurity compliance and resilience. The engineer will assess vulnerabilities and risks, propose remediation and mitigation strategies, document configuration and architecture changes, and coordinate engineering change and security authorization processes.…See more The role requires coordinating across cloud, computer engineering, cybersecurity, and operational stakeholders to support production and operational events, including on-ship testing and implementation. Candidates must have a Bachelor's degree plus 9+ years of experience (or equivalent with advanced degree) and an active Secret clearance with ability to obtain TS/SCI.

Design, configure, troubleshoot, and optimize enterprise network infrastructure for Department of Warfare missions. Deploy switching, routing (OSPF, BGP), VLANs, VPNs, firewalls, and security technologies in multi-vendor environments.…See more Develop technical artifacts including network diagrams, implementation guides, and standard operating procedures. Requires 3+ years of hands-on network engineering, Secret clearance, and CCNA certification.

The Network Engineer IV delivers advanced tactical network engineering, integration, and sustainment for the Navy's carrier training system (CANES architecture), ensuring reliable data transport, system interoperability, and secure performance. The role maintains, configures, and troubleshoots shipboard and afloat network hardware and software, supports Fleet training readiness exercises, and provides hands-on technical leadership across NIWC Pacific and shipboard IT teams.…See more Responsibilities include system updates, patching, virtualization management, cybersecurity compliance (RMF, STIG, HBSS/ACAS), and functional/performance testing with occasional underway periods. The engineer must hold or obtain an active Secret clearance (TS/SCI preferred), possess DoD 8570 IAT Level II and CCNA/CCNP certifications, and demonstrate expertise in Linux, Windows Server, Cisco IOS/NX-OS, Juniper JUNOS, and infrastructure automation.

The Data Center Lead coordinates daily on-site data center operations for a Navy customer, serving as the primary point of contact between engineering teams and management. Responsibilities include rack and stack installations, hardware deployments, equipment relocations, structured cabling, and supporting network, server, and virtualization infrastructure deployments.…See more The role requires 5+ years of data center operations experience, hands-on knowledge of Cisco and Juniper networking, VMware vSphere, physical servers, LAN/SAN, and security-focused environments. An active DoD IAT Level II Certification and an operating-system certification (MTA, MCSA, MCTS, or equivalent) are required.

Design, configure, and sustain mission-critical networked systems using Cisco, Aruba, Juniper, and specialized hardware. Support end-to-end lifecycle activities including staging, integration, testing, fielding, and sustainment of DoD networks.…See more Implement secure architectures aligned with RMF and STIGs, perform system hardening and vulnerability remediation, and troubleshoot networks in labs, shore facilities, and deployed environments. Requires 8+ years of hands-on network engineering experience, DoD Secret clearance, and a DoD 8570/8140 baseline certification (Security+ CE minimum).

Lead IT operations and infrastructure for a mid-sized organization, managing a small IT team while maintaining hands-on involvement in day-to-day support. Oversee Microsoft 365, Azure, Entra ID, Intune, and Fortinet firewalls; administer LAN/WAN/VPN networks; ensure security, compliance, and business continuity; and partner with leadership on technology strategy and vendor management.…See more Requires 5+ years in systems and network administration in a Microsoft environment, 2+ years in a supervisory role, and expertise in endpoint management, disaster recovery, and troubleshooting.

Lead Network Engineer supporting U.S. Navy enterprise network modernization with 10+ years of Cisco infrastructure experience.…See more You'll serve as on-site technical advisor to government clients, guiding system architecture, solution design, and implementation for Software-Defined Access, SDN, Zero Trust, and enterprise network modernization. Responsibilities include developing technical briefs, solution recommendations, and implementation planning while leading cross-functional engineering teams to solve complex network challenges and support Navy mission-critical infrastructure security and modernization.

Design and evolve enterprise network architectures for a large university, including wired, wireless, core, WAN/Internet, data center, and cloud-connected networks. Lead complex infrastructure projects from requirements through deployment, serve as technical escalation resource for routing, switching, and connectivity issues, and develop network standards and runbooks.…See more Mentor junior engineers and evaluate emerging networking, cloud, wireless, automation, and security technologies. Required expertise in large-scale enterprise networks, advanced routing/switching (BGP, OSPF, IPv4/IPv6), enterprise platforms (Aruba, Palo Alto Networks, Infoblox, ClearPass), network observability, and project leadership.

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.