lan-wan jobs in San Diego

Director-level role managing data center operations, infrastructure, and associated teams at a healthcare organization. Responsible for on-premises and hybrid infrastructure environments, network architecture, disaster recovery, business continuity, compliance with healthcare/security regulations, and supervising assigned staff.…See more Requires 10+ years of data center/infrastructure experience, 8+ years in supervisory roles, and demonstrated expertise in enterprise networking, cloud platforms, virtualization, and IT service management.

This Level 2 Network Engineer role involves answering client support calls, owning technical issues end-to-end from initial contact through resolution, and performing structured troubleshooting across Windows, Active Directory, Microsoft 365, networking (LAN/WAN, VLANs, routing, switching, firewalls, VPNs, wireless), and cloud infrastructure. The engineer coordinates with SMEs and vendors while maintaining client communication, escalates intelligently without relinquishing ownership, and documents findings to build institutional knowledge.…See more Key expectations include first-contact resolution, root-cause analysis, mentoring Level 1 engineers, and participation in infrastructure projects.

Network Engineer responsible for supporting and maintaining enterprise Cisco routing, switching, and firewall infrastructure, with hands-on duties including firewall administration, load balancing support, network performance monitoring, and participation in infrastructure upgrades and migrations. The role requires experience in complex enterprise network environments, incident troubleshooting, and escalation support, balancing day-to-day operational responsibilities with project-based modernization initiatives.See more

Director-level role managing infrastructure and operations for a healthcare systems company. Responsible for leading on-premises data center and enterprise facilities infrastructure, overseeing Windows/Linux servers, virtualization (VMware), SAN/NAS storage, disaster recovery, cloud platforms (Azure, AWS, GCP), networking (LAN/WAN, SD-WAN, firewalls, DNS, DHCP), identity and access management, and infrastructure monitoring.…See more Requires 10 years of subject-matter expertise, 8 years supervisory experience, and deep knowledge of IT service management, infrastructure automation, and compliance.

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 IT operations and infrastructure for RIVO Holdings as a hands-on IT Manager, overseeing a small team while maintaining active involvement in day-to-day support. Manage company hardware, software, network infrastructure, cloud platforms (Microsoft 365, Azure, Entra ID, Intune), and security systems including Fortinet firewalls.…See more Responsibilities include team leadership and development, infrastructure administration, security and compliance, cloud and network administration, and vendor management. Requires 5+ years of systems and network administration in a Microsoft environment, 2+ years of supervisory experience, and expertise in endpoint management, disaster recovery, and troubleshooting.

The Systems Administrator / IT Systems Specialist will provide hands-on support for IT infrastructure including servers, networks, business applications, and end-user devices. Key responsibilities include managing support tickets, performing system maintenance and patching, administering Microsoft technologies (Windows Server, Active Directory, Microsoft 365, Azure AD), supporting VMware virtualization and backup/restore operations, and troubleshooting network connectivity issues.…See more The role requires 4+ years of IT support or systems administration experience, working knowledge of Microsoft infrastructure and virtualization platforms, and strong troubleshooting skills. This is an on-site position in San Diego, CA requiring travel to Mexico approximately once monthly.

This role supports cybersecurity engineering and infrastructure security for enterprise, cloud, and classified environments. The engineer will manage vulnerability assessment, system hardening, patching, secure configuration, and DevSecOps pipeline integration across Linux and Windows Server platforms.…See more Responsibilities include compliance support (RMF, ATO, NIST SP 800-53, DISA STIGs), CI/CD security automation, containerized environment hardening, and infrastructure-as-code implementation. Strong technical depth in cloud platforms (AWS/AWS GovCloud), container orchestration, security tooling, and the ability to communicate complex technical and compliance issues to engineering and mission stakeholders are required.

The Senior Systems Administrator designs, implements, and maintains enterprise IT infrastructure across cloud, endpoint, identity, server, and collaboration platforms. Responsibilities include administering Windows, Linux, and macOS systems; managing Active Directory, Azure AD/Entra ID, and endpoint platforms like Intune and JAMF; optimizing system performance and reliability; and developing automation scripts.…See more This role requires 5+ years of enterprise infrastructure experience, advanced knowledge of Microsoft identity and collaboration services, and acts as a technical lead for infrastructure projects while mentoring junior administrators.

Systems Engineer supporting U.S. Navy command and control programs under Naval Information Warfare Systems Command (NAVWAR), responsible for maritime surveillance and C2 capability integration for partner nations.…See more Core duties include requirements definition and traceability, system-of-systems architecture across dissimilar systems, interface definition and control, test/verification/validation planning, technical trade studies, and coordination across multiple program offices. The role demands hands-on systems engineering discipline: turning partner-nation requirements into defined interfaces, integrating capabilities never designed to interoperate, and verifying results meet specifications. Must be comfortable with computing and network environments (LAN/WAN, TCP/IP, routing, switching, Windows/Linux servers, virtualization) sufficient to troubleshoot credibly alongside network engineers.

The Network Specialist provides operational support for DoD Defense Health Agency LAN/WAN infrastructure at Naval Medical Center San Diego, including daily troubleshooting of core and edge switches, resolving network and routing protocol issues across all OSI layers, and supporting routing, switching, firewall, and cabling equipment. The role requires expertise in TCP/IP, routing protocols, firewall/VPN technologies, and hands-on maintenance of LAN/WAN systems.…See more Candidates must hold a Bachelor's degree in a technical discipline plus 3 years of experience (or equivalent vocational certification plus 8 years), an active Secret clearance or higher, and Security+ CE certification with current CCNA or equivalent.