Hiring: Senior IT System Administrator Company: Vast Location: Long Beach, CA Job Posted Time: 2026-09-12 13:50:51 Employment Type: Full-time Target Skills & Keywords : Bash, FedRAMP, Linux, PowerShell, Python, RBAC, SaaS, Spring, Windows Server, macOS About the job Experience: •Proficiency in administering and managing endpoint and server automation systems. •Applied hands-on capability in enterprise-grade patch management tools (e.g., WSUS, Ivanti, or Automox). •In-depth knowledge of SaaS solutions and their integration into existing IT infrastructure. •Proven ability to independently manage complex IT projects with cross-functional impact. Required Skills: •Enterprise Infrastructure Architecture & Design •Design, architect, and implement enterprise-scale Windows Server infrastructure (2016/2019/2022) supporting 500+ endpoints and mission-critical operations. •Lead the architecture and optimization of Active Directory Domain Services, including multi-forest/multi-domain design, trust relationships, site topology, and replication strategies. •Design and implement Group Policy architecture at scale, including inheritance models, WMI filtering, security filtering, and loopback processing. •Advanced Identity & Access Management •Architect and maintain complex Active Directory environments, including forest/domain design, schema modifications, FSMO role management, and disaster recovery strategies. •Design and enforce role-based access control (RBAC), privileged access management (PAM), and least-privilege security models. •Optimize Active Directory performance including replication monitoring, database maintenance, and tombstone management. Qualifications: •4+ years of experience in IT system administration in an enterprise environment. •4+ years of experience with endpoint management tools (e.g., JAMF, Intune, GPO). •Demonstrable experience in patch management across diverse environments. •Solid understanding of server operating systems (Windows Server, Linux) and virtualization platforms (e.g., VMware, Hyper-V). •Solid functional working knowledge of networking fundamentals (subnets, VLANs, routing). •Willingness to work evenings and/or weekends to support critical mission milestones •Demonstrated capacity to lift up to 25lbs unassisted •We calibrate level and compensation to the selected candidate's experience and demonstrated capability. We welcome applicants across a range of experience levels to apply. Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!