Senior Product Development Engineer – Mechanical

Innovating at the edge of what is possible


The position requires you to work on both technical details and their integration to come to a feasible product, while cooperating with other colleagues and partners in- and outside the Netherlands. You constantly balance the technical possibilities with the customer’s quality and time requirements.

Your tasks and responsibilities

You work in project teams and are involved in a large part of the process, from concept design to production. As you are working with leading experts and Lean techniques are consistently applied in the projects, you catch on and learn fast! Responsibilities will include:

  • Generate multiple concepts for which you do feasibility studies, develop relevant measurement setups using theoretical models, simulations and prototype verification;
  • Define or derive criteria to judge and rank a design’s suitability for high volume production at acceptable cost
  • Advise on design related boundaries and impact on product level, while performing research on technologies, materials and external developments;
  • Interact with quality colleagues to define test plans and consult on acoustical process and design related potential failure modes;

Your profile

The high level of uncertainty in the early phases of the R&D cycle does not scare you off, but spices your energy to tackle the challenge. Your hands-on and result driven mentality shows with initiative, and taking the lead. Your enthusiasm makes you a great team member, so you can interact and communicate effectively with a wide variety of people with different backgrounds. Other qualities we ask for are:

  • A Master degree or PhD in Mechanical Engineering, or related technical fields;
  • At least 5-7 years of working experience that gave you thorough understanding of the correlation between mechanical design and functionality of a transducer;
  • Knowledge and/or experience in miniature assembly, tolerance analysis etc.;
  • Thorough Knowledge and/or experience in DFA & DFM for high-volume production (Design For Assembly & Design For Manufacturing);
  • Affinity with adjacent areas of expertise of transducers (transducer physics and simple acoustics)
  • Work independently on relatively complex assignments with multidisciplinary project teams;
  • Independently performing feasibility and/or achievability studies using simulation tools, experiments, literature etc.
  • Independently performing and assessing risk analyses of the product that is to be manufactured;
  • Knowledge of characterization of electrical bench testing on product level, instrumentation, measurement setups and acoustics;
  • Familiar with numerical and analytical modelling (e.g. Matlab, Pspice, Comsol or ANSYS).

Equally important to your knowledge and experience is the personality you bring. Your enthusiasm makes you a great team member; you are supportive, proactive and result-driven. You interact and communicate effectively with a wide variety of people with different backgrounds.


Sonion improves the quality of life of people using hearing products. We are striving and committed to be the preferred partner in the development and manufacturing of transducers and electromechanical solutions designed for (professional) use in hearing instruments, in-ear earphones and hearables. Size matters, and we constantly challenge the laws of physics for making small and reliable products. Our outstanding competences within customer focused innovation and development, and our lengthy experience in efficient manufacturing make us successful.

Sonion has facilities in Denmark, the Netherlands, Vietnam, the Philippines, Poland, USA and China, wherefrom our (more than 6000) colleagues work together across all locations.

Our offer

We offer a compensation package that matches your qualifications, including a competitive salary, 27 vacation days, 13 rota free days and 8% holiday allowance. But more importantly, Sonion is a working environment that provides you with the opportunity to steadily further develop. As we are the leading innovators in our field, you will work in different projects for different high-end customers. Along with your manager you will regularly reflect on and make plans for your development and interests. We are an international and inclusive organization where it is easy to connect with colleagues.

Further information and application

Ready to make a difference?

Please submit your application in English to

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