firewall-administration jobs in San Diego

This role administers Microsoft 365 cloud services (Entra ID, Intune, Exchange Online, Teams, SharePoint) and manages core infrastructure including firewalls, VPNs, Active Directory, and Windows Server environments. The Systems Administrator will handle identity and access management, endpoint security, device compliance, and network troubleshooting while automating administrative tasks with PowerShell.…See more Responsibilities include Tier 2/3 technical support, system monitoring, and participation in infrastructure projects. The ideal candidate has 3+ years of systems administration experience with strong Microsoft 365 and networking foundations.

As a Managed Services Engineer II (L1 SOC Analyst) on Deloitte's Cyber Operate team, you will monitor security alerts from SIEM and other security tools, validate and escalate incidents within SLA timeframes, investigate suspected threats, and perform IOC searches. You will respond to security events using documented procedures, distinguish false positives from genuine incidents, coordinate with escalation paths, and maintain runbooks and shift handover documentation.…See more The role requires a Bachelor's degree in IT/Computer Science plus 1+ years of security operations or cybersecurity experience, hands-on familiarity with SIEM platforms, IDS/IPS, EDR, DLP, WAF, firewalls, and threat intelligence, and the ability to work rotating 24/7 shifts from a Deloitte office 50% of the time.

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

Senior Network Administrator with 10+ years of enterprise network engineering experience to design, deploy, and maintain complex routing, switching, and firewall infrastructure in multi-cloud DoD/government environments. Responsibilities include managing IP address space, VLANs, VPCs, and routing protocols (OSPF, BGP); implementing secure tunneling (IPsec) and Network Access Control solutions; supporting Zero Trust architectures; and coordinating with engineering and cybersecurity teams on network modernization.…See more Must hold an Active Secret clearance and DoD 8570/8140 IAT Level II certification plus a relevant Cisco or security certification (Security+, CySA+, GSEC, SCNP, or SSCP).

This role supports mission-critical network operations for U.S. Navy RDT&E infrastructure, requiring 10+ years of enterprise network engineering experience.…See more The Network Engineer will design, configure, and maintain complex routing, switching, and firewall solutions across on-premises and cloud environments (AWS/Azure), implement Zero Trust and network security architectures, and ensure STIG compliance and high-performance connectivity. Hands-on expertise with BGP, OSPF, IPsec, VLANs, HPE Aruba, Palo Alto firewalls, and enterprise monitoring tools (Traffic Sentinel, Zabbix) is essential. An active Secret clearance and IAT II certification (Security+, CCNA Security, or equivalent) are required.

Serve as a primary administrator for core security technologies including Microsoft Defender Suite, Entra ID, Conditional Access, and endpoint protection, while also administering enterprise infrastructure across Microsoft 365, Azure, AWS, VMware, and hybrid platforms. Troubleshoot complex infrastructure and security issues, manage cloud backup and disaster recovery, monitor alerts through LogicMonitor and SIEM/MDR/SOCaaS services, and coordinate with security operations teams on investigations and remediation.…See more Requires 8+ years of hands-on experience in cybersecurity and infrastructure engineering in business-critical environments, with deep expertise in Microsoft identity and security technologies, cloud platforms, vulnerability management, and enterprise backup solutions. Participate in after-hours support and escalation activities as needed.

Network Engineer responsible for deploying, configuring, troubleshooting, and optimizing enterprise network infrastructure supporting Department of War missions across data centers, campuses, and tactical environments. Will work with routing, switching, security technologies, and systems integration to deliver resilient, secure, and high-performing network solutions.…See more Requires 3+ years of hands-on network infrastructure experience, knowledge of enterprise networking protocols and security technologies, and ability to develop technical documentation and artifacts. Requires Secret clearance and CompTIA Security+ and Cisco CCNA certifications.

The Network Engineer, Systems will provide engineering, administration, and operational support for complex RDT&E and secure network environments supporting U.S. Navy initiatives.…See more Responsibilities include configuring and maintaining routing, switching, firewall, and boundary protection solutions (HPE Aruba, Palo Alto); monitoring network performance with enterprise tools (Traffic Sentinel, Zabbix); implementing network security solutions (NAC, ClearPass, 802.1X, Zero Trust, IPsec); and managing cloud connectivity across AWS and Azure. The role requires 10+ years of enterprise network engineering experience, hands-on expertise with OSPF, BGP, IPsec, VLANs, cloud networking, STIG compliance, and firmware lifecycle management. Required qualifications include a Master's degree in Computer Science or related field, active Secret Clearance, and IAT II Certification (Security+, CySA+, CCNA Security, GSEC, GICSP, or SSCP).