Founder Associate internship
Stage FRANCE
Job description
Description
Who Are We?
Syntetica is an early-stage chemical startup on a mission to decarbonize the textile industry through textile-to-textile recycling — starting with nylon.
Today, most synthetic textiles are made from crude oil, and less than 1% are recycled back into new fibers. We're here to change that. At Syntetica, we’ve developed a patented depolymerization process that breaks down nylon-rich textile waste into virgin-equivalent nylon monomers — while separating materials like elastane, polyester, and cotton for further recycling.
Backed by Entrepreneur First, we’ve raised €4.2M from leading investors including EQT Ventures , the family offices of Peugeot and Etam , as well as high-profile athletes like Paul-Henri Mathieu and Jean-Éric Vergne .
We’ve already forged key partnerships with major textile players like Victoria’s Secret and ETAM — as well as leading fast fashion and sportswear brands — and have assembled a core team of 12 experts .
If you want to help bring truly circular materials to global scale — and solve one of the textile industry’s biggest sustainability challenges — come build with us.
Syntetica raises €4.2M to close the loop in nylon recycling
Victoria’s Secret, Etam Nylon Recycling Specialist Syntetica Raises 4.2 Million Euros
Mission and Key Responsibilities
As a Founder’s Associate Intern, you will be the right hand to our CEO and a key player in driving strategic initiatives across production, commercial development, fundraising, and project management.
You will also work closely with Operations and R&D teams to accelerate Syntetica’s growth in green chemistry.
Your key responsibilities will include:
Commercial & Fundraising support
· Participate in preparing investor materials (pitch decks, updates, data rooms)
· Commercial development incl. new customer acquisition and monthly touchpoints with the world’s biggest brands
· Support market research and business development initiatives
Product & Project Delivery
· Help coordinate timelines and deliverables with internal teams and external partners
· Track and support the execution of action items related to production deliverables
· Assist in liaising with suppliers, technicians, and manufacturing partners
· Help maintain and enforce quality control processes
R&D operational support
· Support the planning of R&D goals, resources, and equipment allocation
· Participate in performance tracking and reporting of R&D progress
· Help standardise workflows and contribute to internal documentation and training
Required background and skills
· Final-year student from a top engineering school (gap year or end-of-studies internship)
· Hands-on, structured, and rigorous with excellent analytical skills
· Comfortable with project management tools (e.g. Notion, Excel/Sheets)
· First experience in a startup, consulting, VC, or similar environment is a plus
· Full professional proficiency in English; French is a plus
· Excellent interpersonal and communication skills
You are:
· Highly motivated, proactive and a quick learner
· Able to manage multiple workstreams in a fast-paced environment
· Excited by building solutions with impact and ready to work hard to build something enormous
Recruitment Process
· 30-min introductory call with People Lead
· Case study/Practical exercise with Marco
· Final conversation with Florian, COO
· Offer!
Interesting infos
Location: Paris and Villejuif
Start date: July or September 2025
Duration: 6 months
Contract type: Full-time internship
Benefits : 50% of transport costs covered and 50% of health insurance covered (as per legal requirements), 70% of a Gymlib subscription covered by Syntetica