Executive Assistant

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About Us Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M Series B, valuing the company at $1.4 billion, we are expanding our teams and capabilities to deliver mission-critical systems to allied forces. Our work is guided by clear values: building technologies with real-world impact, pursuing excellence in everything we do, setting ambitious goals, and taking on the hardest technical challenges.

We operate in a demanding environment where rigor, ownership, and execution are expected. About the Role As Executive Assistant at Harmattan AI, you will serve as a trusted right-hand partner to our founders, ensuring seamless coordination across his priorities, stakeholders, and strategic initiatives. You will be embedded at the heart of a founder-led environment operating at the intersection of advanced technology and national security — where the pace is relentless, discretion is paramount, and your impact is direct.

The C-Suite operates across multiple time zones, engaging daily with government officials, investors, and senior defense stakeholders. This role demands a resilient, solutions-oriented individual who can anticipate needs, act with precision, and communicate with confidence at the highest levels. Responsibilities Executive Support Provide senior-level, strategic EA support across all business and personal priorities Manage a highly complex and evolving international calendar with strong prioritisation and proactive anticipation Act as a professional gatekeeper and communication filter, managing inbound requests with sound judgment Prepare briefing materials and ensure preparedness for all engagements Track actions and ensure consistent follow-through across key initiatives Stakeholder & Communications Management Coordinate interactions with senior stakeholders, including government, investors, and strategic partners Draft and manage high-quality communications in both Swiss German and English Build and maintain strong relationships across internal and external networks Operations & Logistics Manage complex international travel planning and logistics Act as a central point of coordination across business and leadership activities Support ad hoc projects linked to strategic and operational priorities Maintain organisation, structure, and efficiency within a fast-moving environment Candidate Requirements At least 5–10 years of proven experience supporting in a high-performan