Senior SharePoint Developer (Remote/On-Site Pentagon)

F2 Systems, LLC. seeks a Senior SharePoint Developer to support the USMC MCTSSA Program at the Pentagon in Washington, DC. The role requires DoD clearance and 1–2 days on-site per week, with potential for remote support arrangements. You will manage SharePoint 2010/2013 environments, implement CSOM-based features, handle migrations to 2016, and ensure secure, scalable information sharing across sites and teams.