Executive Assistant

Responsibilities

• Perform an array of administrative tasks (e.g., manage CEO’s correspondence / calendars, book meetings/travel, plan events, etc.) as needed
• Operational Support: Support with ongoing company operations while improving efficiency and responsiveness. Help identify new operational weaknesses with CEO and team. Maintain office space and supplies
• HR Assistance: Support recruiting and retention activities. Help onboard new hires and offboard outgoing employees. Contribute to a positive and welcoming company culture
• Financial Support: Expense report, invoice processing, payroll coordination, PO management, and additional financial housekeeping
• Legal and Compliance Support: Contract management, tracking of relevant NDAs and IP filings
• Vendor Management: Liaise with external partners, companies, and guests on behalf of Oso Semiconductor for scheduling of engagements, appointments, and any special requests

Requirements

• 5+ years as an executive assistant, office manager, or operations/admin support, ideally supporting a founder or C-suite leader
• Exceptional organization and attention to detail, with a track record of managing complex calendars, travel, and competing priorities
• Strong written and verbal communication
• Proven discretion handling confidential and sensitive information
• Comfort with ambiguity and shifting priorities in a startup environment
• Proficiency with Google Workspace and the ability to quickly learn new tools

Preferred Qualifications

• Experience at a startup, deep-tech, or semiconductor company
• Exposure to HR, recruiting, finance ops, or bookkeeping
• Familiarity with tools like Gusto, Brex, QuickBooks, Carta, DocuSign, HubSpot, or Breezy
• Event planning experience