Founders Associate – Internship or Apprenticeship
Alternance Paris (Paris)
Job description
About
Estuaire is a Paris-based startup aiming to reduce the climate impact of aviation.
Estuaire develops a data platform and climate impact reduction technologies.
The company specializes in non-CO₂ effects, such as aircraft contrails. The startup was founded by two former Airbus employees and collaborates with companies such as Safran, Vueling, or Vinci Airports
Job Description
As a Founders Associate, you will work directly with Estuaire’s two co-founders and play a central role in building the company. You will contribute to strategic, operational and growth topics, and gain a 360 view of how a climate-tech startup scales.
Your Missions
Business & Strategy
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Identify and reach out to potential customers
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Pitch our solution and gather product feedback
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Support fundraising: investor outreach, pitch decks, follow-ups
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Contribute to certifications, partnerships, and ecosystem positioning
Marketing & Communication
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Write articles, posts and newsletters on aviation sustainability
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Manage communication channels (LinkedIn, newsletter, X)
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Monitor performance metrics and suggest improvements
Operations & Internal Work
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Draft and review contracts, procurement items and legal documents
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Support hiring: screening, interviews, coordination
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Contribute to team organization as we grow
Preferred Experience
We are looking for a motivated, curious and impact-driven candidate.
Must-haves
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Strong interest in climate, sustainability or aviation
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Currently studying business, economics, or a related field
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Excellent written English
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Autonomy, reliability and the ability to get things done
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A creative, problem-solving mindset
Nice-to-haves
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Prior experience in startups, consulting or BD
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Interest in tech, regulation or environmental policy
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French is a plus but not required
We hire for potential, not for perfection!
Recruitment Process
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15-minute interview with our current Founders Associate
Motivation, background, expectations
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30-minute interview with the co-founders
Conversation about interests and alignment
A short “day-at-work” case to understand your approach to real situations
Additional Information
· Contract Type: Internship (Between 6 and 12 months)
· Start Date: 01 September 2026
· Location: Paris
· Occasional remote authorized