Executive Assistant

Full Job Description

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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