
Location: Stäfa, Switzerland
Fulltime, 6–9 Months
Our team develops and optimizes manufacturing processes, defines production parameters, supports ongoing products in production, and collaborates closely with manufacturing sites around the world. To strengthen our team, we are looking for a motivated Practical Trainee who is eager to apply scientific knowledge to real-world engineering challenges.
In this role, you will support our team in investigating and understanding complex material systems used in hearing aid manufacturing. A particular focus will be on the protection of solder joints against corrosion through specialized coating technologies.
Your Responsibilities
Your Profile
What We Offer
As one of the world’s leading hearing care providers headquartered in Switzerland, we’re committed to building an inclusive culture. We want to create an environment where you can balance a successful career with your commitments and interests outside of work, through our flexible hybrid working model.
We can offer you a new challenge, with interesting tasks and much more – including an open corporate culture, flat hierarchies, support for further training and development, opportunities to take on responsibility, and an excellent range of foods, sports and cultural facilities.

Around 25% of the world’s population is living with hearing loss. At Sonova, we envision a world where everyone enjoys the delight of hearing and lives a life without limitations. From personal audio devices and wireless communication systems to audiological care services, hearing aids, and cochlear implants. Our product brands – Phonak, Unitron, Sennheiser (under license), and Advanced Bionics – create compelling new products to offer the optimal solution for an ever growing consumer base through our globally diversified sales and distribution channels, including our well established global audiological care business. With a presence in over 100 countries and more than 19,000 employees, we leverage our global infrastructure and local roots. We aim for an inclusive work environment and culture that fosters a good balance of family and work-life for everyone. Our workforce is made up of 110 nationalities across 4 generations.
In 2006, Sonova founded the non-profit Hear the World Foundation, which seeks to give children living with hearing loss access to audiological care in low- to middle-income countries.