IT Systems Administrator I
Team: Information Technology
Location: Irvine, California
Commitment: Full Time
Workplace Type: onsite
What You Will Do
- Take ownership of key IT systems, infrastructure, and enterprise applications from planning through long-term support
- Design, implement, and maintain secure network, cloud, and identity systems
- Administer and support Windows, macOS, Microsoft 365, and related platforms
- Automate system and support processes using tools like PowerShell
- Deploy and manage VMs, service accounts, monitoring tools, and cloud resources
- Lead major IT projects, including technical design, documentation, risk planning, and rollout
- Evaluate new technologies and recommend solutions that improve performance, scalability, and security
- Troubleshoot complex technical issues and perform root-cause analysis
- Support end users when needed and partner with engineering resources for escalations
- Work with vendors and contractors on implementations and system improvements
- Help maintain strong cybersecurity practices and protect sensitive data
- Manage IT inventory, hardware/software provisioning, and licensing
- Support physical infrastructure such as server racks, network cabling, and power systems
- Operate within ITIL processes and ticketing systems to ensure reliable service delivery
- Provide technical leadership during incidents and mentor Level 1–3 support staff
- Contribute to IT standards, policies, and best practices
- Stay current on emerging technologies and cybersecurity threats
What You'll Need to Have
- 7 + years of experience in IT support, systems engineering, or system administration
- Strong knowledge of networking, cloud infrastructure, virtualization, and security
- Hands-on experience with Windows, macOS, Microsoft 365, and identity/access systems
- Experience with IT automation (PowerShell or similar tools)
- Background implementing and supporting enterprise applications
- Familiarity with cloud platforms such as AWS, Azure, or Google Cloud
- Understanding of cybersecurity best practices and working with sensitive information
- Experience working within ITIL processes and ticketing systems
- Strong troubleshooting skills and ability to solve complex problems
- Experience leading technical projects and coordinating across teams
- Ability to explain technical concepts in a clear, business-friendly way
- Comfort working with vendors and cross-functional stakeholders
- Willingness to work with physical IT infrastructure when needed
- Linux administration experience
- Advanced certifications (CCNP, AWS/Azure Professional, Security+, CASP, etc.)
- Experience in regulated environments (ISO27001, HIPAA, GDPR, CA privacy laws)
- Experience supporting IT in manufacturing or laboratory environments
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