Applications Administrator V. Poway Move Collective

Sr. SharePoint Architect & Administrator Job Summary

General Atomics (GA), and its affiliated companies, is one of the world's leading resources for high-technology systems development ranging from the nuclear fuel cycle to remotely piloted aircraft, airborne sensors, and advanced electric, electronic, wireless and laser technologies. We have an exciting new opportunity within the GA ITS Solutions Enterprise Applications organization for a Senior SharePoint Architect & Administrator with deep expertise across SharePoint Online, on-premises SharePoint Server environments, and the Microsoft 365 Power Platform.

In this senior-level role, you will serve as the technical authority for GA's SharePoint ecosystem - architecting solutions, driving governance, and leading the continued evolution of our collaboration platforms. You will play a pivotal role in advancing our transformation strategy, supporting both a Microsoft 365 GCC High tenant and on-premises SharePoint Server environments that serve the unique requirements of our defense and government programs.

You will be part of a learning culture, where teamwork and collaboration are encouraged, excellence is rewarded, and diversity is respected and valued.

• Architect, deploy, and administer enterprise SharePoint environments encompassing both SharePoint Online (M365 GCC High tenant) and on-premises SharePoint Server, ensuring high availability, performance, and security across all environments.
• Lead the design and implementation of site architecture, information architecture, and governance frameworks that scale to enterprise needs while aligning with business objectives and compliance requirements.
• Manage site collections, web applications, content databases, and service applications across GA's SPOL tenants and SharePoint SE farm, proactively monitoring and tuning for optimal performance.
• Administer and support Microsoft Project Server / Project Online, including configuration, permissions, project site provisioning, and ongoing operational support for enterprise project management capabilities.
• Plan and execute SharePoint migrations, upgrades, and environment consolidations, leveraging tools such as the SharePoint Migration Tool (SPMT) and Share Gate.
• Maintain and optimize Search service applications, managed metadata / term store, content types, site columns, and taxonomy to ensure consistent, enterprise-wide findability.
• Configure and maintain SharePoint hybrid scenarios, including hybrid search, hybrid sites, and One Drive for Business hybrid, bridging on-premises and cloud environments.

• Serve as the resident subject matter expert on Microsoft 365 GCC High, maintaining deep familiarity with its unique compliance posture (FedRAMP High, CMMC, DFARS, ITAR/EAR) and the architectural constraints that distinguish it from commercial M365 tenants.
• Navigate and communicate GCC High limitations to stakeholders, including restricted external sharing (GCC High and DoD tenants only), reduced third-party app catalog availability, delayed feature rollout relative to commercial M365, and the absence of certain Graph API capabilities.
• Evaluate third-party add-ins, connectors, and Power Platform integrations for GCC High compatibility before deployment, understanding that not all commercial solutions are certified for the government cloud.
• Maintain compliance with data handling standards applicable to Controlled Unclassified Information (CUI), ensuring SharePoint configurations align with organizational CMMC and NIST 800-171 obligations.
• Partner with the security team to implement and manage sensitivity labels, Microsoft Purview Information Protection policies, and Data Loss Prevention (DLP) configurations within the GCC High environment.

• Develop and maintain advanced Power Shell scripts using the PnP Power Shell framework, SharePoint Online Management Shell, and the Microsoft Graph Power Shell SDK to automate provisioning, configuration, reporting, and lifecycle management tasks at scale.
• Author robust, reusable, and…