Executive Assistant to the CEO

RheactionSan Francisco, CA
Onsite

About The Position

We're looking for an exceptional Executive Assistant to the CEO to help a fast-growing startup operate with greater focus, speed, and efficiency. You'll work closely with the CEO across scheduling, communication, travel, meetings, priorities, and day-to-day operations. This role goes beyond traditional executive support: you'll act as a trusted partner who anticipates needs, removes friction, and helps ensure the CEO's time is focused on the highest-impact priorities. The ideal candidate is highly organized, resourceful, discreet, and proactive, with experience supporting founders or senior executives in a fast-moving startup environment.

Requirements

  • 3–7+ years of experience supporting a CEO, founder, or senior executive, ideally at a startup or high-growth company.
  • Exceptional organizational and time-management skills.
  • Strong written and verbal communication.
  • Excellent judgment, discretion, and attention to detail.
  • Ability to manage competing priorities in a fast-changing environment.
  • Highly proactive—you identify what needs to happen without waiting to be asked.
  • Comfortable interacting with executives, investors, customers, candidates, and other senior stakeholders.
  • Strong proficiency with modern productivity and collaboration tools.
  • Willingness to operate beyond a traditional EA job description when the business needs it.

Nice To Haves

  • Experience supporting a founder at an early-stage or venture-backed startup.
  • Experience during periods of rapid company growth.
  • Recruiting, people operations, event planning, or business operations exposure.
  • Experience coordinating board or investor meetings.
  • Familiarity with AI and automation tools for executive productivity.
  • Experience building systems and processes rather than simply maintaining them.

Responsibilities

  • Own complex calendar management, scheduling, and prioritization.
  • Coordinate domestic and international travel, itineraries, and logistics.
  • Manage meeting preparation, agendas, notes, and follow-ups.
  • Help prioritize inbound requests and protect the CEO's time.
  • Draft and coordinate communications with employees, investors, customers, candidates, and external partners.
  • Track important decisions, commitments, and action items to ensure follow-through.
  • Organize leadership meetings, company events, offsites, and other executive activities.
  • Handle confidential and sensitive information with excellent judgment.
  • Take ownership of special projects and operational tasks as needed.
  • Anticipate problems before they arise and proactively find solutions.
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