Senior SharePoint Administrator at Leidos in Fort Belvoir, VA

Senior SharePoint Administrator Location: Fort Belvoir, VA Leidos is seeking a Senior SharePoint Administrator to partner on a large enterprise IT contract for the Department of War (DoW) to support SharePoint operations across multiple geographic locations. The ideal candidate will be a technical expert responsible for installation, configuration, security, operation, and maintenance of servers, equipment, and software related to the SharePoint infrastructure. The candidate will ensure solutions meet business needs and involves tasks such as managing permissions, migrating content, troubleshooting issues, training users, and integrating SharePoint with Microsoft and custom applications. The Senior SharePoint Administrator will provide systems and software operations and maintenance support in a large network enterprise, multi-enclave environment.  This individual will work in a team environment to ensure mission needs are met and ensure functionality of capabilities of customers. Primary Responsibilities: Maintenance and Administration: Maintain and administer Microsoft SharePoint 2016/2019 Servers, including daily monitoring, troubleshooting and performance analysis. Installation and Configuration: Install and configure SharePoint software and related components at the server level, including SQL Server, web server and application server. Customization: Customize the platform to meet specific business requirements. Migration and implementation: Execute the migration of content from the existing SharePoint Infrastructure running on Windows Server 2016 to the new Infrastructure that will run on Windows Server 2019, ensuring data integrity and minimal disruption. Support the migration of legacy SharePoint solutions from on-premises environments to SharePoint Online. Oversee SharePoint projects to include minor and major version upgrades, routine maintenance, and expansion of capabilities to meet emerging requirements. Troubleshooting and support: Log, analyze, and resolve technical issues, escalating to vendors or other teams as needed. Integration: Integrate SharePoint with other Microsoft 365 applications and the Power BI Platform. Compliance and Governance: Understanding of National Institute of Standards and Technology frameworks for cybersecurity and privacy. Ensure that SharePoint solutions comply with DISA Security Technical Implementation Guides (STIG) and complete STIG checklists as required. Provide follow-up reports (technical findings, feedback, resolution steps taken, After Action Report (AAR) etc.) for Root Cause Analysis, engineering technical assessment, and process improvement initiatives. Security Best Practices: Configure the SharePoint Infrastructure to comply with Microsoft Security, Performance and Operations Best practices. Security Least Privilege: Configure the SharePoint Infrastructure Administrative Accounts to comply with the Principal of Least Privilege. Security RBAC: Configure the SharePoint Infrastructure Administrative Accounts to utilize Role-Based Access Control (RBAC). Security Zero Trust: Configure the SharePoint Infrastructure Administrative Accounts to Zero Trust Architecture. Rapidly distinguish and resolve isolated user problems from enterprise-wide application/system problems. Implement Identity and Access Management (IdAM) policies and tools. Examine highly complex customer problems in Windows, Macintosh, and UNIX desktop operating systems (think of virtualized clients) imaging, desktop applications, user profiles, and general system problems. Support customer requirements in a 24/7/365 environment and schedule. Basic Qualifications: The candidate must have bachelor’s degree with 8+ years of prior relevant experience or a Master’s Degree with 6-10 years of prior relevant experience.  Additional experience may be taken into consideration in lieu of a degree. Strong knowledge of SharePoint's functional capabilities, including site, page, list creation, and permission management. Familiarity with SharePoint 2016, SharePoint 2019, and SharePoint Online. Experience with InfoPath, Microsoft 365 and the Power BI Platform. Understanding of authentication protocols like Kerberos, NTLM, and claims-based authentication. Knowledge of related technologies like Active Directory, Azure Active Directory, and Internet Information Services (IIS). Client-side development skills using JavaScript frameworks like TypeScript, as well as server-side development skills for creating web parts. Experience with business intelligence and dashboard development. Experience with interacting with DoW customers to handle service, inquiries, and problems. Experience working independently, without supervision, analyzing a situation, designing, and communicating solutions to senior management and customers at multiple worldwide locations. In-depth understanding of SharePoint administration. In-depth understanding of customer IdAM policies and tools. Experience with Tier 2 system administration. Experience with Scripting/Automation. Experience troubleshooting issues in a growing environment. Experience with log reviews, incident analysis, and identification of issue trends. Experience with SharePoint server patch management methodologies. Time management skills. Ability to work independently. Excellent oral and written communications skills. Track record of working effectively within a team, and support to peers toward improved processes and results. Experience with support ticket management systems. Candidate must, at a minimum, meet DoD 8570.11- IAT Level II certification requirements (currently Security+ CE, CCNA-Security, GSEC, or SSCP). Ability to commute to the office on the approved schedule. Preferred Qualifications: MS-102 Microsoft 365 Administrator Expert. AZ-800/801 Windows Server Hybrid Administrator Associate. AZ-104 Azure Administrator Associate or AZ-305 Azure Solutions Architect Expert. Clearance: An active TS/SCI clearance is required for this position. Due to the nature of the government contracts we support, US Citizenship is required. If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: June 2, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $92,300.00 - $166,850.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.