Executive Assistant

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-performance environment (private equity, private office, or equivalent) Fully bilingual in Swiss German and English, with exceptional written and verbal communication skills Strong track record of operating in fast-paced, international, high-pressure settings Outstanding technical capability and confidence using modern productivity tools, including AI Demonstrable ability to manage complexity with precision and sound judgment High levels of discretion, professionalism, and emotional intelligence Highly organised, detail-oriented, and naturally proactive Calm, solutions-driven mindset with the ability to anticipate needs before they arise Excellent, verifiable references We look forward to hearing how you can help shape the future of autonomous defense systems at Harmattan AI. Find more English Speaking Jobs in Switzerland on Arbeitnow