It Systems Engineer It Security Jobs in South San Francisco, CA

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Systems Engineer

Fremont, CA
onsite
Temporary / Contract
47.5 - 55 USD / Hourly
We are looking for a Systems Engineer to support and enhance core enterprise infrastructure in Fremont, California. This Contract position will focus on maintaining secure, reliable, and efficient environments across directory services, server platforms, messaging systems, and virtualized technologies. The ideal candidate brings strong technical depth in Microsoft-based infrastructure and a proactive approach to troubleshooting, administration, and continuous improvement. Responsibilities: • Administer and optimize Active Directory environments, including user access, group policies, and directory health. • Manage Microsoft Windows Server systems to ensure stability, performance, and ongoing operational readiness. • Support Azure Active Directory administration, including identity management and access control configuration. • Maintain and troubleshoot Citrix technologies to provide dependable application and desktop delivery services. • Oversee Microsoft Exchange administration, including mailbox management, system performance, and issue resolution. • Monitor infrastructure services and respond to incidents with timely diagnosis and corrective action. • Implement system updates, patches, and configuration changes while minimizing service disruption. • Document technical procedures, environment changes, and support activities to maintain operational visibility.
2026-10-28T00:00:00Z

Systems Engineer

San Jose, CA
onsite
Temporary / Contract
55.4135 - 64.163 USD / Hourly
We are looking for a Systems Engineer to support and enhance core enterprise infrastructure in San Jose, California. This Long-term Contract position is ideal for someone with strong experience administering Windows-based environments, identity platforms, and messaging systems. The role focuses on maintaining reliable system performance, strengthening access management, and helping teams resolve complex infrastructure issues across the organization. Responsibilities: • Administer and optimize Active Directory services to support secure user access, group policies, and directory health. • Maintain Microsoft Windows Server environments, including configuration, patching, performance monitoring, and issue resolution. • Support Azure Active Directory operations such as identity synchronization, access controls, and authentication management. • Manage Microsoft Exchange administration tasks to help ensure stable mail flow, mailbox availability, and system reliability. • Investigate infrastructure incidents and implement corrective actions to minimize downtime and recurring technical problems. • Collaborate with internal teams to plan, test, and deploy system improvements that strengthen platform stability and security. • Document system configurations, operational procedures, and technical changes to support maintainability and knowledge sharing.
2026-10-30T00:00:00Z

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

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.
2026-11-02T00:00:00Z

Engineering Technician

Fairfield, CA
onsite
Temporary / Contract
33 - 36 USD / Hourly
Robert Half is seeking an Engineering Technician to support municipal engineering, development review, permitting, and public works activities. This Engineering Technician position provides a combination of office and field technical engineering support, including reviewing construction and subdivision plans, assisting with development review, preparing engineering drawings, supporting field survey activities, and issuing encroachment permits.The ideal Engineering Technician candidate will have experience working with civil engineering plans, land development, public works projects, surveying, or municipal engineering and be comfortable working with engineers, contractors, developers, property owners, and the general public. Key Responsibilities<ul><li>Review subdivision final maps, parcel maps, and construction plans for compliance with City Planning and Engineering requirements and accepted construction practices.</li><li>Review and interpret civil engineering plans associated with streets, utilities, land development, and public infrastructure improvements.</li><li>Prepare engineering plans, specifications, profiles, cross-sections, and related technical drawings.</li><li>Perform horizontal and vertical alignment calculations and other engineering computations supporting:</li><li>Street improvements</li><li>Curb and gutter construction</li><li>Sewer systems</li><li>Water systems</li><li>Storm drainage</li><li>Parks and other public improvement projects</li><li>Assist with the development review process, including review and coordination of plans submitted for private and public improvement projects.</li><li>Process and issue encroachment permits in accordance with City requirements.</li><li>Provide flood zone determinations and respond to requests for general engineering and development information.</li><li>Participate as a member of a field survey crew, gathering and documenting field data for planning, engineering, and public works projects.</li><li>Assist with construction staking, improvement-site surveys, and property boundary surveys.</li><li>Use surveying equipment to obtain accurate field measurements and assist with survey calculations.</li><li>Reproduce, organize, and assemble engineering plans, specifications, maps, and related documents.</li><li>Maintain accurate records associated with engineering drawings, surveys, permits, and field activities.</li><li>Prepare technical documentation and reports as required.</li><li>Coordinate and communicate with City employees, engineers, contractors, developers, property owners, and members of the public.</li><li>Perform other related engineering support duties as assigned.</li></ul>
2026-10-28T00:00:00Z

5 results for It Systems Engineer It Security in South San Francisco, CA