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Internship at R&D Department

Sion - Lab, Sion - Office, Sion - Plant
Full or part-time
Intern / Student

Your mission

As an intern in DePoly’s R&D Department, you will support ongoing activities in our PET plastic recycling laboratory. You will work alongside chemists and engineers to help design, develop, and optimise processes and equipment for scale-up to our commercial plant.


Responsibilities you'll be handling:
  • Work as a part of a multidisciplinary team of chemists and chemical engineers in a laboratory environment
  • Execute daily laboratory experiments and tasks under the guidance of lab supervisors
  • Support R&D and quality control projects, collaborating closely with scientists and engineers
  • Contribute to the optimisation of processes and unit operations for DePoly’s commercial PET recycling plant
  • Accurately document experimental procedures, results, and observations
  • Assist in data analysis and reporting to support decision-making and process improvements

Your profile

We expect you to have these skills:

  • Enrolled in a degree program in Chemistry, Materials Science, or Chemical Engineering
  • Hands-on experience in a wet chemistry laboratory
  • Proven ability to multitask by managing concurrent experiments while maintaining accuracy and efficiency in a fast-paced lab environment
  • Demonstrated strong sense of responsibility by strictly following laboratory protocols, accurate record-keeping, and safe chemical handling
  • Able to manage your own work and stay organised, while asking for guidance when needed
  • Curious and willing to learn, with a hands-on approach to picking up new responsibilities
  • Strong team player with good communication skills
  • Fluent in English; knowledge of French is a plus
  • Eligible to work in Switzerland (Swiss work permit or equivalent)
  • Nice to have: Familiarity with different analytical techniques such as UV-Vis, FTIR and NMR

Why us?

Here's what we can offer:

  • 6 months internship in a stimulating working environment
  • Being part of an international team in the heart of the Swiss Alps
  • Learning practical, on-the-job, chemical & process engineering skills 
  • Become involved in the scaling up of new recycling technologies
  • Making the first steps in the cleantech & sustainability industry

About us

DePoly is a Swiss cleantech company, specializing in advanced recycling of PET and Polyester plastics. Recognized as 2024 Technology Pioneer by the World Economic Forum and winner of the Top 100 Swiss Startup Award in 2024, second place in 2025, we challenge the status quo and strive for excellence, with a shared passion for making a positive impact by tackling the global plastic problem. Founded in 2020, we are a team of young, dynamic dedicated entrepreneurs, scientists and operators who are committed to solving the plastic problem.