IT Systems Administrator Jobs in Tustin, CA

Champion secure digital access by designing and maintaining IAM solutions that empower organizational efficiency while ensuring compliance with industry standards and best security practices in a hybr...

Lead the charge in architecture design and integration of enterprise systems while delivering custom software solutions and guiding a team to enhance NIAID's clinical information capabilities and supp...

Shape the future of our AI Advisory Services by managing diverse projects, ensuring timely delivery, and fostering client relationships. Your leadership will drive operational excellence and financial...

Champion security operations by ensuring compliance and integrity of classified information systems, monitoring vulnerabilities, managing incidents, and training personnel in security protocols while...

Analyze and enhance system reliability through data integration and modeling, collaborating with cross-functional teams to ensure optimal performance of Navy systems and supporting mission-critical as...

Join us in transforming critical infrastructure! Lead the modernization of telecom systems, ensuring zero downtime while adhering to safety and compliance standards in a fast-paced, regulated environm...

Drive innovation by architecting scalable systems that enable rapid growth while optimizing service delivery. Collaborate with engineering teams to enhance system design and integration, ensuring effi...

Drive the development and maintenance of data systems that support environmental and multi-omics research. Collaborate with interdisciplinary teams to create robust analytical pipelines and ensure dat...

Deliver comprehensive site acquisition expertise for innovative 5G projects, focusing on regulatory compliance, budget management, and vendor performance to drive successful network expansion across m...

Join a dynamic logistics team to ensure seamless material deliveries, utilizing advanced systems and collaborating with multiple stakeholders to meet critical deadlines and execute delivery requiremen...

Unlock potential by leading complex enterprise system transformations, guiding teams, and building strong client relationships to deliver high-quality BPMN process architectures for large-scale digita...

Drive the evolution of backend systems for a leading cloud platform, enhancing API design and technical integrity while navigating a mature PHP architecture. Collaborate with engineering peers to opti...

Lead the charge in secure identity management by developing a high-performing IAM team and overseeing critical identity services while collaborating on enterprise security initiatives and driving oper...

Shape secure systems for critical Defense and Intelligence missions by applying risk management frameworks and ensuring compliance with DoD and NIST standards. Work collaboratively with teams to maint...

Advance progress at the forefront of national security applications by developing, deploying, and supporting mission-critical software solutions in an Agile environment while leveraging modern cloud a...

Help us drive revenue growth and retention in K-12 accounts through strategic planning, executive engagement, and seamless deal execution across multiple stakeholders in the public sector...

Drive the design and implementation of an integrated intelligence layer, enhancing operations through AI and strategic platform development across engineering, manufacturing, and business functions...

Elevate IT service delivery through innovation and automation. In this senior role, you will resolve complex escalations, mentor analysts, and collaborate cross-functionally to enhance efficiencies an...

Drive platform reliability as a Site Reliability Engineer, optimizing and managing our cloud infrastructure to ensure performance, availability, and innovative solutions across AWS and Kubernetes...

Accelerate progress at the intersection of software engineering and data science. Leverage your backend expertise, working closely with data scientists on robust API development and production systems...

Drive organizational cybersecurity by enhancing security governance, managing risks, and ensuring compliance. Collaborate with internal teams and external partners to elevate security practices and de...

Join a team that's shaping the future of data center infrastructure. Drive innovative designs and collaborate cross-functionally to deliver reliable and scalable network solutions that support global...

Unlock potential by providing top-tier technology support, ensuring seamless operations and high customer satisfaction through expert assistance with hardware, software, and infrastructure. Collaborat...

Optimize IT operations by leading a skilled team to ensure infrastructure reliability, security, and superior service delivery while managing projects, incidents, and compliance with industry standard...

Champion a culture of growth by leading and mentoring support engineers while ensuring client satisfaction and operational goals are met through effective project management and engagement strategies...