Mechanical Engineering / Industrial Product Design Internship


This internship will take place in Hoofddorp, where you will join over a 100 of our colleagues as we design new products for the hearing health and pro audio market. Whether you prefer doing CAD work for injection molded parts, designing tools for new problems that arise during development or helping further our inhouse 3D printing capabilities, Sonion can find a fit for your skillset. We offer internship positions every semester and are always on the lookout for new talent to join our team.


Who are we?

Sonion is a global supplier within the Hearing Aid Industry. The Sonion Group develops, manufactures, and sells product solutions to customers who manufacture hearing instruments and other acoustic solutions. Sonion Nederland B.V (Sonion NL) is the main R&D centre within transducers and modules, but Sonion NL also has sales supportive activities such as Application Engineering, CQS and administrative support functions. Sonion has facilities in Denmark, the Netherlands, Vietnam, the Philippines, USA and China, wherefrom our (more than 6000) colleagues work together across all locations.



Sonion NL serves as the primary research and development hub within the Sonion Group, spearheading technological and design advancements for products within the hearing health and professional audio sectors. Through collaboration with various departments, including Research and Development, New Systems, and Quality Assurance, we strive to enhance our current reliability testing capabilities.

The project’s scope is flexible and can be tailored to the student’s background and expertise, potential areas of focus may include:

Job Duties

  • Designing housings and other plastic components in CAD
  • Testing and developing tooling
  • 3D printing prototypes and tooling
  • Designing new injection molds 

Required technical competences

  • Currently studying for an engineering degree, Industrial Product Design, Mechanical Engineering or similar.
  • Fluent in English, written and spoken. Sonion is an international company and with the Hoofddorp office we have colleagues from all over the world. Basic/fluent Dutch is a plus.
  • Decent CAD skills. The main CAD package withing Sonion is Solidworks. Knowledge of Autodesk fusion360 and Autodesk Meshmixer are a plus.
  • Basic knowledge of injection molding and 3D printing rules.
  • Proactive and willing to take ownership of responsibilities.

Who are you?

  • You are a quick learner who is able to take on challenges and develop new skills.
  • You are result-driven and focused on achieving project goals efficiently and effectively.
  • You pride yourself in being proactive in identifying potential issues and in finding solutions.
  • You feel comfortable thinking outside of the box and exploring innovative approaches to problem-solving.
  • You are able to demonstrate a hands-on approach to work and enjoy collaborative environments with a diverse team of people with varying backgrounds.


Our offer

Of course, we offer an internship allowance of EUR 500,- per month. Besides this, you will get:

  • Your own workspace with all the hardware you will need
  • Compensated travel expenses
  • Flexible working hours
  • Free parking
  • An office located a 5 minute walk away from Hoofddorp train station

More importantly, we offer you a work environment that gives you the opportunity to steadily further develop. In this project, you will get a lot of responsibility and chances to use your knowledge in the field. You and your supervisor will regularly reflect on your work. Sonion is an international and inclusive organization where it is easy to connect with colleagues. So, where are you waiting for? Apply now!


Further information and application

You are welcome to contact The People & Culture department at for further information about the position. Please send your application in English to

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