Harmattan Ai
Executive Assistant
Lausanne
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hirly's read of this role
- Seniority
- Mid level
- Work mode
- On-site / unstated
- First seen by hirly
- 10 Sept 2026
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the posting
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.
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