**Description** SAIC is currently seeking an experienced Mid/Sr level System Administrator in support of 24/7/365 operations to support our team in Arlington, VA. Position Overview: + Manage and maintain currently supported and subsequent Microsoft (MS) Windows Server Operating Systems (OS) on physical and virtual operating environments + Assist with hardware and software technology refreshes, ensuring milestone compliance while coordinating with application owners to minimize disruptions. + Demonstrate day-to-day adherence with change management precepts and practices and is responsible for writing Change Requests and seeking approval. + Work Remedy tickets and provide initial triage of complex tickets. + Interface directly with parallel teams when necessary. + Apply DISA STIGs and resolve security vulnerabilities. + Support operational transition of enterprise solutions into production. Shift Schedule: Night Shift, Tues – Sat, 11:00PM-700AM **Qualifications** **Required Education and Experience:** + Bachelor's Degree in Computer Science, Information Systems, or other related field or equivalent work experience. + Possess DoD 8570.01-M/DoD 8140 Certification IAW established mandate prior to start of work - IAT Level II required (CCNA Security, CySA+, GICSP, GSEC, Security+ CE, SSCP); IAT Level III is desirable (CASP+ CE, CCNP Security, CISA, CISSP (or Associate), GCED, GCIH). Applicants not meeting this requirement will not be considered + Minimum of three years of relevant IT work experience. + Active DoD Secret clearance + Understanding of technology areas such as Active Directory, DHCP, DNS, Group Policy, DFS and the ability to maintain other Windows core services. + Basic knowledge of networking concepts and technologies.  Desired Education and Experience: + Bachelor's Degree in Computer Science, Information Systems, or other related field or at least five (5) years of equivalent work experience in lieu of degree. + Minimum of three years of relevant IT work experience. + Understanding of technology areas such as Active Directory, DHCP, DNS, Group Policy, DFS and the ability to maintain other Windows core services. + Basic knowledge of networking concepts and technologies. + Comprehension of NTFS file share permissions. + Knowledge of PowerShell scripting a plus. + Fundamental understanding of authentication mechanisms such as Kerberos, LDAP and NTLM and use of necessary tools to troubleshoot them. SAIC accepts applications on an ongoing basis and there is no deadline. Covid Policy: SAIC does not require COVID-19 vaccinations or boosters. Customer site vaccination requirements must be followed when work is performed at a customer site. REQNUMBER: 2500362 SAIC is a premier technology integrator, solving our nation's most complex modernization and systems engineering challenges across the defense, space, federal civilian, and intelligence markets. Our robust portfolio of offerings includes high-end solutions in systems engineering and integration; enterprise IT, including cloud services; cyber; software; advanced analytics and simulation; and training. We are a team of 23,000 strong driven by mission, united purpose, and inspired by opportunity. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $6.5 billion. For more information, visit saic.com. For information on the benefits SAIC offers, see Working at SAIC. EOE AA M/F/Vet/Disability