Junior Chief of Staff (Paris)

About the role

Lucis is looking for a proactive Junior Chief of Staff to support its founders and ensure smooth operations at the Paris headquarters. You will act as the operational backbone, handling logistics, communication, and administrative tasks that enable the team to scale quickly.

Key responsibilities

• Manage multi‑time‑zone calendars and travel arrangements for the founders, ensuring they are prepared for board meetings, client engagements, and other critical events.
• Triaging high‑volume inboxes and maintaining accountability on follow‑ups with partners, investors, and ecosystem stakeholders.
• Oversee the Paris HQ, from vendor relationships to hosting VIP visitors.
• Handle invoice payments, accounting workflows, and HR administration such as employee requests and office onboarding.
• Design and execute logistics for team events and marketing pop‑ups across Europe.
• Serve as the first point of contact for internal and external stakeholders, protecting founders’ deep‑work time while meeting team needs.

Required profile

• 1‑3+ years experience in a fast‑growing environment (Series A/B) or a rigorous professional services setting (law, finance, consulting).
• Fluent in English and French.
• Strong ownership mindset, able to anticipate needs and close loops without supervision.
• Comfortable with rapid context‑switching and using AI tools to increase efficiency.
• Passionate about preventive health and human longevity.

Required skills

What we offer

• Opportunity to work directly with founders in a mission‑driven health tech startup.
• Dynamic, fast‑moving environment with high impact on European health outcomes.