Lawrence Berkeley National Laboratory is hiring an Administrative Assistant III for the NERSC division. In this role, you will provide comprehensive administrative support for approximately 100 staff, affiliates, students, vendors, and support personnel. You will handle complex assignments requiring sound judgment, initiative, and the ability to anticipate and resolve issues while independently planning, organizing, prioritizing, and executing the Center’s administrative workload in collaboration with the team. You will: Coordinate complex domestic and international travel in compliance with DOE policies, manage conference reporting, and maintain monthly reconciliation reports. Track conference and travel requests in Smartsheet, submit approval packets, communicate outcomes, and process travel accordingly. Plan and manage NERSC events, ensuring DOE/LBNL compliance; coordinate room setup, A/V needs, catering, and post-event cleanup, while communicating requirements to the team for effective planning. Submit procurement orders and reimbursements, maintain tracking systems for outstanding requests, and collaborate with procurement staff to support project and financial needs. Collaborate with the administrative team to share best practices, ensure coverage, and provide backup support as needed. Serve as the administrative point of contact for staff, students, affiliates, and visitors by responding to inquiries, providing information, and coordinating meetings with internal and external stakeholders. Maintain electronic files in Smartsheet and other project management tools; produce and manage documents, presentations, and reports using Google Workspace and Microsoft Office on a Mac.