Executive Assistant to the Chief Scientific Officer (Co-op)

Location: Remote (CA, IL, MA, & NY preferred)
Schedule: Full-time Co-op (JanJun)
Reports to: Chief Scientific Officer
Works closely with: the Operations & Engineering teams

AboutAnadyrHorizon

We create decision infrastructure for the age of strategic surprise. Our Agentic Systems Intelligence (ASI) runs millions of highfidelity simulations to surface hidden escalation pathways, giving nationalsecurity, finance, and insurance leaders time to act when minutes matter. Fresh off our AI+Expo debut, backed by the strongest mission-driven VCs, and featured by Business Insider and NDTV, were scaling fast to meet growing demand. Anadyr Horizon Business Insider (link removed)

About the role

The Executive Assistant serves as a partner to the leadership team at Anadyr Horizon, providing high-level administrative and operational support that ensures the smooth functioning of the Chief Scientific Officers executive activities. This role requires strategic communication skills and a proactive mindset to anticipate needs, as well as manage complex priorities. It is helpful if the Executive Assistant has prior work experience in an office or startup environment. This position is especially important because the CSO moves quickly, juggles a heavy volume of communication, and relies on a structured, detail-oriented partner to keep workflow, scheduling, and follow-through running smoothly.

What youll do

• Calendar & logistics: Manage CSOs schedule, coordinate travel, and handle sensitive logistics with discretion.
• Operational support: Take notes, and track follow-ups for leadership meetings, helping us move forward as a company
• Communication: Draft professional correspondence, manage email inboxes, and serve as a trusted point of contact internally and externally
• Materials & prep: Support the creation of presentations, memos, and briefing documents; proofread and format for clarity as well as style
• Confidential support: Handle sensitive information under NDA conditions with the highest standards of professionalism.
• Special projects: Jump in on various initiativesfrom event coordination to researchensuring priorities are executed on time
• Workflow management: Help the CSO stay on top of commitments, deadlines, and priorities by organizing tasks, prompting timely responses, and ensuring nothing falls through the cracks.
• Structure & accountability: Provide gentle, consistent systems that keep calendars updated, communications clear, and workstreams organized so the CSO can stay focused on scientific and strategic leadership.
  

What youll bring

• Ideally, prior experience as an executive assistant, chief of staff assistant, or in operations/administrative support.
• Exceptional organizational and time-management skills; proven ability to juggle multiple priorities.
• Excellent written and verbal communication skills; sharp note-taking and summarization ability.
• Comfort operating in high-intensity, technical, or confidential environments.
• Proactive mindset, attention to detail, and commitment to discretion.
• A steady, calm, and structured working style that complements a fast-moving executive with a high cognitive load and limited bandwidth for administrative tasks.

Impact

This role gives you direct access to the Chief Scientific Officerone of Anadyr Horizons three co-foundersworking side by side on high-stakes priorities at the heart of the company. Youll give leadership back their most valuable resourcetimeand ensure Anadyr Horizon executes with precision as we scale. Your support will directly improve coordination across the leadership track, strengthening communication flow and reducing friction created by competing priorities or delayed responses.