IT Systems Administrator Jobs in Tustin, CA

Join a team that's focused on optimizing enterprise systems through proactive administration and maintenance, ensuring high availability, security, and performance of critical IT infrastructure and se...

Manage the implementation and operation of IT systems supporting DOJ's complex litigation needs. Optimize performance and ensure security while leading a team in a fully remote environment dedicated t...

Elevate server performance by designing, implementing, and maintaining secure, enterprise-level server infrastructure, leveraging virtualization, automation tools, and best practices for efficiency an...

Design and enhance enterprise IT systems ensuring optimal performance and user support. Lead infrastructure architecture, endpoint management, and compliance across diverse environments, directly impa...

Zachary Piper Solutions is looking for a Mid-Level System and Network Administrator to support 24/7 test operations for a Space Systems Verification and Test team in El Segundo, CA. The role involves...

Unlock potential by providing senior technical leadership for Air Force IT systems. Manage infrastructure, coordinate delivery teams, and enhance system capabilities while ensuring operational stabili...

Take ownership of DLA's Okta environments, ensuring stable operation through planning, development, and optimization. Engage in end user support, conduct training, and guide on technology direction to...

Empower your career by designing and optimizing complex IT infrastructure solutions that support engineering and corporate operations, ensuring scalability, reliability, and compliance while leading a...

Architect robust network infrastructures, focusing on Cisco Meraki and cloud solutions. Own monitoring, troubleshooting, and security of systems across diverse environments while collaborating with cr...

Lead the charge in ensuring optimal system performance and reliability by administering enterprise systems, servers, and backup infrastructure, while adhering to IT security policies and service deliv...

Champion innovative IT solutions at the DOJ by analyzing requirements, designing systems, and leading technical teams to support complex litigation missions in a fully remote environment...

Support IT operations for distribution centers, coordinating helpdesk requests, managing hardware, and ensuring timely response for effective DC functioning while maintaining safety and compliance wit...

Deliver expert Tier II Linux support, ensuring system functionality and compliance. Collaborate with vendors and apply advanced troubleshooting skills in a dynamic environment to enhance the performan...

Transform systems administration for a critical DoD network, ensuring operational readiness and compliance while collaborating closely with diverse teams to enhance IT infrastructure and cybersecurity...

Contribute to ITOM excellence by managing ServiceNow platforms, ensuring data integrity, and optimizing integrations in compliance with federal standards. Collaborate with teams to enhance system perf...

Elevate system functionality by managing IT applications and enhancing project delivery through collaboration. Utilize your expertise in troubleshooting and maintenance while integrating AI solutions...

Join a team that ensures secure, compliant IT operations for mission-critical services. As a System Administrator, you'll manage server environments, support cybersecurity protocols, and collaborate w...

Join a team that enhances system performance by ensuring the reliability and security of RHEL Linux systems while automating processes with Ansible, contributing to operational efficiency and infrastr...

Unlock your potential by managing cloud computing security and implementing best practices under the NIST RMF standards. Collaborate with cross-functional teams to enhance Oracle Cloud Infrastructure...

Join a team that's dedicated to delivering frontline IT support and enhancing user experience. Ensure the seamless operation of computing systems, manage asset lifecycle, and assist with network infra...

Bring your expertise to ensure high availability and security of enterprise systems. Collaborate with IT teams to implement solutions that align with best practices and compliance, while mentoring jun...

Pioneer the future of litigation support as you manage IT systems for DOJ, optimizing automated resources for complex legal proceedings. Join our remote team to enhance system performance and ensure c...

Champion operational excellence by managing IT and enterprise software systems, driving tool consolidation, implementing automation, and ensuring reliable IT operations in a fast-paced, growing health...

Join a team that's integral to the DOJ's litigation mission, supporting complex applications as an E-Discovery Application Administrator. This fully remote role demands expert programming skills to en...

Manage day-to-day operations of secure classified networks, ensuring high performance and support for Special Access Programs. Collaborate with stakeholders to maintain system integrity and security w...