Senior SharePoint Backend Administrator

Leidos; Alexandria (VA); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking a Senior SharePoint System Administrator to support a large enterprise IT contract for the DoD. The role includes deploying, operating, and maintaining SharePoint services, including load balancing, PKI authentication, and permissions management across multiple enclaves with remote administration for data centers.

The position requires strong technical and customer-oriented skills, experience with SharePoint 2013/2016/2019/SE/Online, and familiarity with M365/O365 cloud

Qualifications

• Bachelor's degree with 8 years of relevant experience; Master's with 6 years; Associate's with 10 years; or High School Diploma with 12 years.
• Experience with SharePoint 2013/2016/2019/SE and SharePoint Online.
• Experience configuring, installing, and securing SharePoint systems.
• Experience with SQL clusters in support of SharePoint farms.
• Experience with PKI authentication and claims-based authentication.
• Experience with ITSM ticketing systems such as ServiceNow.

Responsibilities

• Interact with site/collection owners to handle service inquiries and problems.
• Provide implementation, troubleshooting and maintenance of IT systems.
• Differentiate user problems from enterprise-wide issues quickly.
• Develop and update SOPs and knowledge articles.
• Oversee SharePoint projects including upgrades and expansions.
• Coordinate with ICAM technologies for integration.
• Assist users with migrations to SharePoint 2019, SE or Online.
• Manage permissions for site collections and related items.
• Manage access to O365/M365 apps like Teams, OneDrive, and SharePoint Online.
• Conduct data searches and purges for cyber security and compliance needs.
• Maintain asset library, risk database, and calendar for stakeholders.
• Coordinate with customers to collect data and implement solutions for tickets.
• Provide follow-up reports including AARs for RCA and process improvement.
• Support 24/7/365 operations with after-hours response.

Skills

SharePoint expertise

SQL coordination

PKI/authentication

Load balancers

M365/O365 experience

Team collaboration

Education

Bachelor's degree

Master's degree

Associate's degree

High School Diploma

Tools

F5 BigIP

Citrix NetScaler

Power BI

Nintex

InfoPath

SPPatchify

Job description

Looking for an opportunity to make an impact? At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

If this sounds like a mission you want to be a part of, keep reading! Leidos is seeking a Senior SharePoint System Administrator to support a large enterprise IT contract for the DOD. The SharePoint System Administrator will support infrastructure services, operations, and maintenance across multiple enclaves of different classifications with remote administration for server farms located in centralized data centers. The SharePoint Admin shall deploy, operate, and maintain SharePoint services, including load balancing, PKI authentication, and claims-based authentication as well as support site setup, permission management, troubleshooting, and service requests for customers as well as content and knowledge managers. This individual will work in a team environment to ensure mission needs are met and ensure functionality of capabilities of customers. This role requires an individual that is technical, customer oriented, and familiar with using SharePoint. This individual should be detail oriented in order to capture customer inquiries appropriately. Role requires excellent oral and written communication skills.

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.

Primary Tasks

• Interacting with site/collection owners to handle service inquiries and problems.
• Provide implementation, troubleshooting and maintenance of IT systems.
• Rapidly distinguish isolated user problems from enterprise-wide application/system problems.
• Develop solutions for complex problems, update Knowledge Articles and Standard Operating Procedures (SOPs) to reflect changes to the environment.
• Oversee SharePoint projects to include minor and major version upgrades, routine maintenance, and expansion of capabilities to meet emerging requirements.
• Identify methods for direct integration with Identity, Credential, and Access Management (ICAM) technologies.
• Assist users with manual migrations from older SharePoint versions to SharePoint 2019, SE or SharePoint Online.
• Manage permissions of new and existing site collections and their associated lists, items etc.
• Manage access to O365/M365 applications based on SharePoint technology such as Microsoft Teams, Microsoft OneDrive, and SharePoint Online.
• Conduct searches and purges of data from operational systems as required by cyber security, legal, compliance, FOIA, and other legitimate sources.
• Manage asset library, risk database, and business rhythm calendar (Leidos best practice) to enhance situational awareness for stakeholders.
• Coordinate with customers and stakeholders to collect data, conduct analysis, develop, and implement solutions associated with incident tickets and requirements.
• 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.
• Support customer requirements in a 24/7/365 mission environment with after‑hours outage response and support.
• Update operations and maintenance documentation for 24/7/365 IT Operations Center personnel to assist with after‑hours triage and troubleshooting of common SharePoint problems.

Basic Qualifications

• Strong experience with SharePoint technologies to include SharePoint 2013, 2016, 2019, SE and SharePoint Online.
• Strong experience with configuring, installing, and securing SharePoint systems.
• Experience with managing SQL clusters in support of SharePoint farms.
• Experience with patch maintenance for SQL clusters and SharePoint farms.
• Experience with PKI authentication and claims-based authentication.
• Experience with utilizing load balancers such as F5 BigIP Load Traffic Manager or Citrix NetScaler.
• Strong experience managing M365/O365 cloud offerings such as Microsoft Teams, Microsoft OneDrive, SharePoint Online.
• Strong experience with patch maintenance for SharePoint farms.
• Experience with routine maintenance processes and willingness to conduct scheduled maintenance during approved maintenance windows.
• Experience with Change Management fundamentals to ensure proper planning, execution, and documentation of changes to the environment.
• Experience with Tier 2 & Tier 3 system administration.
• Experience troubleshooting issues in a growing environment.
• Experience with reviews, incident analysis, and identification of issue trends.
• Time management skills.
• Strong oral and written communications skills.
• Track record of working effectively within a team, and support to peers toward improved processes and results.
• Experience with IT Service Management (ITSM) ticketing systems such as ServiceNow.

Education

Candidate must have a Bachelor's degree with 8 years of relevant experience, Masters degree with 6 years, Associate's with 10 years, or High School Diploma with 12 years.

Certifications

Candidate must, at a minimum, meet DoDM 8140.03 (previously DoD 8570) – IT System Admin Intermediate certification requirements (Cloud+, GICSP, SSCP, Security+ CE, GSEC, or higher) No industry certifications are required for this position, though a relevant certification in SharePoint, M365/O365 or similar technology is beneficial.

Clearance

Due to the nature of the government contracts, we support, US Citizenship is required. TS/SCI with specific polygraph required for Position or TS/SCI and willingness to complete a polygraph.

Preferred Qualifications

Familiarity with using Nintex, InfoPath, and/or PowerBI platforms for creating and managing workflows. Experience configuring and managing SPPatchify for patch maintenance of large SharePoint farms. Microsoft 365 Certified: Administrator Expert or equivalent certification related to SharePoint, Teams, OneDrive and their administration.

Pay Range

Pay Range $92,300.00 - $166,850.00

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Original Posting: October 26, 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.