patch-management jobs in San Diego

Lead vulnerability and patch management operations across infrastructure, middleware, and applications for Deloitte's Cyber Defense & Resilience team. Prioritize remediation activities using threat intelligence, exploitability data, and attack paths; manage remediation workflows and patch deployment at scale.…See more Mentor junior practitioners, develop client deliverables, and drive process improvements that reduce cyber risk. Requires 10+ years in IT/information security with hands-on experience in vulnerability management tools, remediation automation, and ITSM platforms.

Senior security engineer responsible for conducting comprehensive vulnerability assessments across OT/IT infrastructure at a water utility, including PLCs, SCADA systems, HMIs, network devices, and remote telemetry sites. Will evaluate architecture, network segmentation, boundary security, remote/vendor access controls, patch management, and governance practices against industry standards (IEC 62443, NIST SP 800-82).…See more Deliverables include risk-rated findings, prioritized remediation roadmaps, and executive-level reporting. Requires 6+ years cybersecurity experience with at least 3 years hands-on OT/ICS work and completion of at least two end-to-end OT security assessments.

This Senior Systems Administrator role supports U.S. National Security by maintaining critical enterprise infrastructure, including Windows servers, domain controllers, cloud resources, and VMware environments.…See more The position requires hands-on administration of secure networks, troubleshooting of cryptographic encryptors (TACLANE/KG-175), performing vulnerability remediation with ACAS/Nessus, and executing rapid incident response for site outages. The role demands an active Top Secret clearance with SCI eligibility, 2+ years of direct systems/network administration experience, and 4+ years managing enterprise Windows infrastructure (AD, DHCP, DNS, GPO, WSUS).

Senior IT Cyber Security Specialist responsible for enterprise vulnerability scanning, system hardening, and patch management using tools like Nessus and HBSS. Administers security technologies including SIEM platforms, firewalls, endpoint protection, and VPNs while investigating security incidents and performing root cause analysis.…See more Requires 7+ years of progressive IT/cybersecurity experience in DoD or defense contractor environments, with strong Linux administration and Bash scripting skills. Must hold DoD 8570.1-M IAM Level III certification (CISSP, CISM, or GSLC) and maintain compliance with NIST SP 800-171, CMMC Level 2, and DISA STIGs.

The Cybersecurity Engineer II will perform system hardening, vulnerability assessments, and remediation on Windows and Linux systems in accordance with DoD standards. Responsibilities include STIG implementation, vulnerability scanning using ACAS, patch management, compliance support, and documentation.…See more The role requires 5 years of hands-on experience with system hardening, vulnerability assessment tools, and both Linux and Windows remediation, plus a relevant Bachelor's degree and one of several security certifications (CCNA, CySA+, GICSP, GSEC, Security+, or SSCP).

Seeking an experienced Systems Administrator to maintain critical defense enterprise infrastructure in San Diego, including Windows servers, domain controllers, cloud resources, and VMware environments. The role requires dual network and systems administration responsibilities, including TACLANE cryptographic encryptor configuration, troubleshooting site outages, vulnerability remediation (ACAS/Nessus), system hardening, and user account management.…See more Requires 4+ years designing and deploying enterprise Windows infrastructure (AD, DHCP, DNS, GPO, WSUS) and 2+ years in a Network or Systems Administrator role, plus DoD 8570 IAT Level II compliance (Security+ or equivalent).

IT Manager responsible for end-to-end IT operations at a mid-sized organization, including infrastructure administration, security, incident response, and disaster recovery. Oversees Windows Server, Active Directory, Microsoft Exchange DAG, virtualization, SAN storage, and Azure hybrid environments.…See more Leads IT projects from scoping to delivery, manages vendor relationships, owns cost optimization, and supervises IT team members while ensuring business continuity and SOC 2 compliance.

The Windows Platform Engineer will administer, secure, and maintain enterprise Windows Server environments (2016, 2019, 2022) across a large-scale Department of Defense network. Responsibilities include patching, vulnerability remediation, STIG compliance, IAVA remediation, and full infrastructure lifecycle management (installation, configuration, monitoring, upgrades, decommissioning).…See more The role requires 2–5 years of Windows Server and enterprise systems administration experience, an active Secret clearance, and current Security+ certification.

This role designs, implements, and optimizes enterprise security systems including firewalls, VPNs, and segmentation controls while developing automation scripts to streamline deployments and enhance threat detection. The architect will leverage network observability and security telemetry to validate policies, identify vulnerabilities, manage patch compliance, and produce metrics for operational visibility.…See more Responsibilities include mentoring security teams, advising on security best practices aligned with business needs, and collaborating on process improvements and incident response workflows. Required: 5+ years progressive cybersecurity experience (3+ with master's degree); preferred: hands-on NGFW expertise, intermediate certifications (GSEC, CEH, CySA+), and scripting proficiency in Python, PowerShell, Bash, or Java.

ManTech seeks a Systems Administrator to maintain critical enterprise infrastructure for national security operations in San Diego, supporting the 0100–0900 morning shift. The role requires administering Windows servers, domain controllers, cloud resources, and VMware environments; configuring and troubleshooting KG-175 (TACLANE) cryptographic network encryptors; performing vulnerability remediation with ACAS/Nessus; and executing rapid incident response and site outage troubleshooting.…See more Candidates must have 4+ years of enterprise Windows infrastructure experience (AD, DHCP, DNS, GPO, WSUS), hands-on TACLANE configuration expertise, and DoD 8570 IAT Level II compliance (Security+ CE or equivalent). The position includes up to 25% travel (CONUS/OCONUS) and requires an active Top Secret clearance with SCI eligibility.

ManTech seeks an Information System Security Officer to maintain Assessment & Authorization (A&A) documentation per NIST and DoD standards, track compliance deficiencies via Plans of Action and Milestones, implement continuous monitoring strategies, and oversee audit log systems and patch management. The role requires managing security tools, evaluating system configuration changes, and supporting an Information System Security Manager (ISSM) with compliance and incident response procedures.…See more Candidates must hold Security+ certification, have 2+ years of RMF and NIST SP 800-53 experience, and possess an active Top Secret clearance with SCI eligibility.

A Senior Endpoint Engineer will stand up and manage Microsoft 365 (Exchange Online, SharePoint, Teams, Entra ID) and endpoint management platforms (Intune, Jamf) from scratch in a startup environment. Responsibilities include designing IT onboarding/offboarding workflows, implementing endpoint security policies (EDR, disk encryption, patch management, conditional access), managing vendor relationships and budgets, and providing Tier 1/2 technical support.…See more The role requires 4+ years of hands-on IT operations or systems administration experience, deep proficiency with Microsoft 365 and MDM/UEM platforms, strong networking fundamentals, and scripting ability (PowerShell, Bash, or Python); must support SOC 2 and ISO 27001 compliance.

This role supports maintenance, security, and configuration of Windows and Linux environments for a DoD tactical shipboard system (CANES). Responsibilities include maintaining system software and firmware, developing automation scripts for patch deployments, implementing DISA STIG compliance and security hardening, performing vulnerability remediation, and managing software version control and configuration management.…See more The candidate must hold an active Secret clearance, have 5–7 years of systems administration experience, and demonstrate proficiency in PowerShell, Bash, or Python scripting alongside hands-on Windows/Linux administration.

As a Security Engineer II on Deloitte's Cyber Defense & Resilience CTEM team, you'll support clients in identifying, prioritizing, and remediating security exposures across complex infrastructure, middleware, and applications. You'll execute vulnerability and patch management tasks, analyze exposure data and attack paths to guide remediation priorities, and prepare client-facing dashboards and status reports.…See more The role requires 3+ years in IT security or vulnerability/patch management, hands-on experience remediating vulnerabilities across Linux, Windows, and applications, and proficiency with patch management tools (BigFix, MECM, Red Hat Satellite, WSUS, Tenable, Rapid7, Qualys) and scripting/automation languages (PowerShell, Bash, Python, Ansible, Terraform, JSON). You'll also coordinate remediation activities via ServiceNow or similar ITSM platforms and travel up to 50%.

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.

This role combines systems engineering with DevOps and cybersecurity responsibilities. The engineer will develop requirements traceability, support system integration across applications and infrastructure, and provide continuous software sustainment for production systems.…See more Key duties include administering Linux and Windows servers, deploying and maintaining virtualized environments (VMware vSphere, AWS), managing vulnerabilities and DISA STIG compliance, executing zero-downtime deployments, and coordinating incident response. The role requires 3+ years of systems engineering experience in Agile defense environments and 2+ years of recent enterprise server administration.

Sr. Software Product Security role focused on monitoring, assessing, and responding to product and application security risks, vulnerabilities, and emerging cybersecurity threats.…See more Responsibilities include conducting security assessments, automating vulnerability testing, partnering with engineering teams to define security requirements, troubleshooting security issues across systems and applications, and providing technical guidance on cybersecurity best practices. Requires 4-15+ years of cybersecurity/product security experience, strong knowledge of vulnerability management and risk assessment, hands-on experience with security testing and application validation, and familiarity with secure software development practices. Security certifications (CISSP, Security+) preferred; experience in regulated industries or healthcare a plus.

This onsite role administers and secures Windows 11 and Red Hat Enterprise Linux (RHEL) systems supporting NIWC Pacific's mission-critical RDT&E networks and secure enclaves. The administrator will develop PowerShell and Bash automation scripts, implement Ansible playbooks, harden systems to DISA STIGs and DoD cybersecurity standards, manage vulnerability remediation and patching, and support infrastructure design and modernization.…See more The position requires 3+ years each of Windows and RHEL administration experience, strong scripting and troubleshooting skills, and an active Secret clearance with a DoD 8570/8140 IAT Level II certification (Security+, GSEC, SCNP, or SSCP).

Senior IT Systems Administrator responsible for implementing, maintaining, and supporting enterprise IT infrastructure across Windows Server and Linux environments. Key duties include administering Active Directory, managing virtualization platforms (VMware vSphere/Horizon), supporting hybrid cloud and Microsoft Entra ID deployments, and developing automation scripts in PowerShell, Bash, or Python.…See more The role requires strong troubleshooting skills, security best practices implementation, and collaboration with IT teams on infrastructure, compliance, and incident response.

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.

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.

SAIC seeks an IT Systems 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, interoperability testing, RMF compliance, Sensor2 system installation and site surveys, patch management, and sustainment troubleshooting. The role requires hands-on experience with Linux, Splunk, VMware, Kubernetes, vulnerability scanning (ACAS, STIG), Windows OS, and network infrastructure, with DoD 8570 IAT Level II certification and an active Secret clearance required.

Software Engineer II supporting Navy METOC systems, responsible for maintaining and developing fielded software systems, firmware, and engineering development models. Duties include software maintenance, patch deployment automation, security compliance (DISA STIGs, C&A processes), vulnerability management, and system hardening.…See more Requires 3+ years software engineering experience, Navy tactical systems familiarity (preferably CANES), Windows/Linux administration, scripting (PowerShell, Bash, Python), and DoD 8570 IAT Level II or Security+ CE certification.

Software Engineer II supporting Navy METOC fielded systems, lab assets, and EDMs under a DoD in-service engineering program. Responsibilities include maintaining system software and firmware, developing automation scripts for patch deployments, performing software testing and validation, and assisting with security hardening, STIG compliance, and certification & accreditation (C&A) processes.…See more Requires 3+ years of software engineering experience, hands-on Windows/Linux system administration and scripting, familiarity with DISA STIGs and vulnerability scanning tools, and preferably prior Navy Tactical Systems or CANES environment experience.

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.