Chief of staff​/GTM to Raphaël Vullierme; Hexa Partner

About the company

the company (formerly eFounders) gives entrepreneurs the best chances to build outstanding companies.

We are a pioneering, world-leading startup studio born in Europe that designs, builds and launches category-defining startups. We are today recognized as one of the best venture studios in the world, with a track record comparable to tier-1 VC funds.

We have created 60+ companies (including 3 unicorns) with a combined valuation of over $5 billion, among them Aircall, Spendesk, Front, Swan and Yousign. We are passionate about B2B software, particularly AI-native and agentic SaaS, fintech, climate tech, etc.

the company is in full growth mode, with three early-stage activities: our Ventures programs the company Start and the company Sprint which help entrepreneurs go from zero to one, and a PE program, the company Scale, which takes majority stakes in existing startups and pushes them to new thresholds.

WTF (“Walk The Frontier”) is leading the company’s effort at the frontier of AI model and led by Raphaël Vullierme, a repeat founder who built Luko France #1 online home insurer now part of Allianz, previous CEO of Open Jet an uber for private aviation, and started out launching ventures at Rocket Internet. We build companies with Europe’s best founders, global from day zero, with offices in Paris and San Francisco.

• Physical AI / Defense / Infrastructure to answer European sovereignty need.

• AI is the buyer.

• Buying decision are being taken by Agent or from an AI analysis. AI process more data and is less irrational / emotional than human. Cost to compare, switch, quote is trending to 0. This will have an enormous impact on market, what get sold or buy way beyond retail and ecommerce. This will much more transformative to the economy than the efficiency gains most AI startup currently focus on.

• Financial Services & Regulated business.

Raphael was CEO of a full stack & regulated insurer. AI is eating the moat of large Financial institution and we are working to re-invent risk and capital is being moved and allocated.

We started in Jan 26 and so far WTF has had a very prolific year building 3 companies. The 2 first raised large seed 4 from Top Tier VC 4month after the inception in 2 very different vertical.

• Wani Wani Agentic Commerce Infrastructure for financial services. Leading Banks, Insurers such as Chubb, Satender, BPI, Axa, Generali runs their AI distribution (selling insurance/mortgage to AI agent - on chatGPT/Gemini…) on Waniwani platform. Several million in ARR reach on Year 1 with US being fastest growing market.

• Pelagon is building a foundational acoustic AI model for autonomous maritime protection, deployed across a distributed network of underwater and surface vectors to give European navies real-time understanding of underwater threats. Working with several EU navies and deployed commercially.

It is a rare role to build category-defining companies learn how they get built, from the inside, at the frontier of AI. High intensity team, high challenge, high worker and learned.

We’re looking for a Chief of Staff to be the execution backbone of WTF: right hand to Raphaël and to our founders, bringing an operator’s rigor to fast-moving, still-forming teams. The role splits into two:

80% - real company-building

Hands-on helping our founders operate their companies across the whole lifecycle, from early discovery and scoping a new idea, through founder search, to building and scaling once it’s live.

• Go-to-market, your main focus: you own GTM for each company: positioning, first customers, sales, pricing, go-to-market experiments, and the tools, automations and trackers needed to run them. the…