Results for Systems Security Administrator Jobs in San Francisco, CA

Add your latest resume to match with open positions.

Security Analyst

Petaluma, CA
onsite
Temporary / Contract
50 - 55 USD / Hourly
We are looking for a Security Analyst to join our aviation client in a contract position based onsite in Petaluma, California. This role is ideal for an experienced security specialist who can strengthen daily security operations, investigate threats, and help protect cloud, identity, and endpoint environments. You will work closely with technical partners across IT and security to reduce risk, improve response readiness, and support compliance-focused initiatives. Responsibilities:• Lead the response to security events by containing threats, gathering evidence, escalating issues when needed, and documenting outcomes for follow-up review.• Oversee identity and access activities, including user access reviews, permission governance, and control validation across enterprise systems.• Analyze suspicious authentication activity, compromised accounts, phishing attempts, and other indicators of malicious behavior to determine impact and next steps.• Coordinate vulnerability follow-up efforts with IT teams to drive remediation progress and reduce exposure across the environment.• Track endpoint protection health, device compliance status, and broader security posture to identify gaps requiring attention.• Examine privileged account usage, network security logs, and web access controls to detect abnormal or unauthorized activity.• Maintain and enhance operational security documents such as incident procedures, playbooks, standard operating guidance, and response runbooks.• Prepare recurring security reports and metrics covering incidents, threat trends, vulnerabilities, and operational performance.• Support audit requests, compliance reviews, eDiscovery efforts, and third-party security assessments as part of ongoing governance activities.• Partner with security, infrastructure, and support teams on daily operations, tabletop exercises, and continuous improvements informed by incident findings.
2026-10-22T00:00:00Z

Systems/Infrastructure Engineer

Petaluma, CA
onsite
Permanent / Full Time
110000 - 135000 USD / Yearly
A growing private aviation services organization is seeking a Senior Systems / Infrastructure Engineer to support and secure its enterprise infrastructure, cloud platforms, and business-critical systems. This is a hands-on role responsible for administering Microsoft technologies, Azure cloud environments, virtualization platforms, networking, and security tools while driving infrastructure modernization and operational excellence.What You'll OwnMicrosoft 365, Azure administration and migrations, Active Directory, Entra ID, VMware/Hyper-V, infrastructure modernization, security tools, and identity management. Networking experience is important but serves as a supporting component of the role rather than the primary focus.Role FocusThis position is primarily centered on systems administration and infrastructure engineering, with significant responsibility for Azure administration, cloud implementations, migrations, and hybrid environments. You'll work across Microsoft technologies, virtualization, identity management, and security platforms while helping drive modernization initiatives throughout the organization. Security operations and network administration are important aspects of the role, but deep network architecture is not the primary focus.Key ResponsibilitiesInfrastructure & Cloud Administration<ul><li>Administer and support Microsoft 365, Entra ID (Azure AD), Active Directory, Windows Server, Group Policy, and hybrid cloud environments.</li><li>Lead and support Azure administration, implementation, migration, and optimization projects.</li><li>Design, deploy, and maintain Azure cloud services, hybrid identity solutions, and cloud-based infrastructure.</li><li>Manage VMware and Hyper-V environments, enterprise servers, storage, backups, and core infrastructure.</li><li>Implement patching, monitoring, system hardening, and infrastructure best practices.</li></ul>Network Administration<ul><li>Manage and troubleshoot enterprise LAN/WAN environments.</li><li>Support switches, routers, firewalls, VPNs, wireless infrastructure, and network segmentation.</li><li>Ensure high availability, performance, and reliability across on-premises and cloud environments.</li></ul>Security & Identity Management<ul><li>Administer Okta, MFA, identity governance, privileged access, and user lifecycle management.</li><li>Support SIEM, EDR, vulnerability management, endpoint security, IDS/IPS, and security monitoring platforms.</li><li>Perform vulnerability remediation, risk reduction, and security hardening initiatives.</li><li>Implement Zero Trust security principles and secure access controls.</li></ul>Incident Response & Compliance<ul><li>Participate in security incident response, investigation, root cause analysis, and remediation efforts.</li><li>Support compliance initiatives related to NIST, CIS, SOC 2, GDPR, and CCPA.</li><li>Maintain technical documentation, infrastructure diagrams, runbooks, and operational procedures.</li></ul>
2026-10-07T00:00:00Z

Network/Systems Manager

Livermore, CA
onsite
Temporary to Hire
65 - 70 USD / Hourly
We are looking for an experienced Network/Systems Manager to join our team in Livermore, California. This is Network/Systems Manager a Contract-to-Permanent position offering an opportunity to lead and oversee critical network operations while collaborating with management and technical teams. The ideal Network/Systems Manager will take ownership of network systems, provide strategic recommendations for improvements, and ensure seamless technology operations across multiple sites. This is an onsite position sitting in Livermore, Ca. The ideal Network/Systems Manager will have Palo Alto firewall experience, strong Cisco networking skills, and a background in Active Directory, VMware, and Google Workspace. The Network/Systems Manager will also help manage security in collaboration with our managed security provider, including patch management, configurations, and oversight of new firewall deployment. Experience with Cisco VoIP systems—particularly in design and configuration—is preferred. When the current manager is out, this Network/Systems Manager role will act as the primary liaison to upper management, requiring excellent communication skills and the ability to present clearly to executives. You will also be the go-to person for staff when issues arise, ensuring problems are addressed quickly and effectively. Responsibilities:•Key Responsibilities<ul><li>Oversee the network and virtual server environments, ensuring reliable and secure operations across all sites.</li><li>Administer LAN/WAN infrastructure including Cisco network equipment, virtualization platforms (VMware), Active Directory, user accounts, and network services.</li><li>Manage and configure firewalls (Palo Alto) and coordinate with security providers for patching, monitoring, and threat mitigation.</li><li>Oversee deployment of new network and security hardware, including upcoming firewall projects.</li><li>Configure and support Cisco VoIP systems, including design and implementation.</li><li>Troubleshoot and resolve hardware, software, and network issues to minimize downtime.</li><li>Evaluate requests for technical assistance, determine appropriate actions, and assign resources accordingly.</li><li>Collaborate with leadership to plan short- and long-term technology upgrades, replacements, and system improvements.</li><li>Design and optimize network architectures (e.g., VLAN, VPN, routing, content filtering, QoS, IDS/IPS, etc.) for high performance and security.</li><li>Install and update network software, service packs, and security patches across multiple platforms.</li><li>Monitor servers, appliances, and network devices to ensure proper performance and availability.</li><li>Lead technology projects, including migrations, new implementations, and product evaluations, ensuring they meet deadlines and quality standards.</li><li>Coordinate with internal teams, vendors, and contractors to complete projects and resolve issues efficiently.</li><li>Prepare documentation including network maps, technical reports, procedures, and recommendations for improvements.</li><li>Stay informed on industry trends, tools, and best practices to inform purchasing and operational strategies.</li><li>Act as a primary contact for management, providing updates, reports, and recommendations.</li></ul>
2026-10-08T00:00:00Z

3 results for Systems Security Administrator in San Francisco, CA