Areté is seeking an experienced IT Systems Administrator III to join our team in Northridge, CA. This position is crucial for supporting the day-to-day administrative operations of the IT department. The selected candidate will report directly to the regional IT Manager and will be responsible for a variety of tasks that ensure the smooth functioning of our IT systems. This role requires a candidate who is eligible to obtain a Top Secret security clearance with SCI access and may involve passing a CI Polygraph. The IT Systems Administrator III will collaborate with other Cyber Security and IT staff members, travel occasionally, and provide after-hours support as needed. The position is exempt and non-supervisory, offering a full-time commitment to our mission of addressing complex security challenges. In this role, the IT Systems Administrator III will integrate, upgrade, and manage domain services and infrastructure systems within a Microsoft Windows Server environment. The candidate will also be responsible for configuring and administering various line of business applications, IT/Cyber Tools, and other software solutions. A key aspect of this position involves recommending improvements to the company's IT services and contributing to computer and network security through the use of various security-based products. Additionally, the administrator will manage data backup and restoration systems for the local facility, provide end-user support, maintain software licensing records, and assist in IT budget planning sessions. Mentoring other IT staff and leading technical projects will also be part of the responsibilities, along with other duties as assigned.