Internships

About Mafer

Mafer AI builds an AI data platform for R&D teams in formulation industries: flavors & fragrances, food & beverage, cosmetics, personal care, home care and specialty chemicals. We structure the molecular and formulation data that today lives across instruments, spreadsheets and lab notebooks, and turn it into systems that accelerate analysis, formulation and regulatory work.

We are a small, highly technical team of engineers and scientists based at Pier07 (Via Laietana 26, Barcelona), backed by tier-1 investors. Everyone here works close to customers: you are either building or selling.

The role

We are always open to giving opportunities to excellent young people who show real passion and drive, whatever their field. We don't wait for the perfect opening: if you stand out, we'll find a way to work together.

Internships at Mafer adapt to your profile — research, GTM, engineering, operations… You'll work side by side with the team on real projects, with real customers, from day one.

If that sounds like you, don't hesitate to write to us.

What we look for

• An outstanding academic record, or a credible self-taught one: projects, papers, open-source contributions, things you've built.
• Passion you can show, not just tell.
• High agency: autonomy, judgment and initiative.
• Curiosity to dive into complex technical problems and learn fast.

Hiring process

1. Apply below — we review every application and reply if there's a potential fit.
2. A 30-minute conversation with Fer (CEO) to get to know each other and align expectations.
3. A technical interview with Marc (CTO), around one hour.
4. A case study reviewed by the team — you'll have 48h to complete it.
5. We move fast: decisions typically take just a few days.