Staefa, Switzerland

R&D Intern Battery Engineer

We are looking for a motivated Battery Engineering Intern to join our R&D Power Management team. In this role, you will support the development, system integration, and verification of Lithium-ion (Li-ion) batteries for hearing instruments. You will work hands-on in the battery laboratory, conduct experiments, analyze test data, and contribute to advanced battery modeling and charging strategy optimization.

This internship provides a unique opportunity to work at the intersection of electrochemistry, modeling, power management, and hardware testing.

More about the role

• Assess different charging strategies, including ageing effects of Li-ion batteries used in hearing instruments applications
• Analyze test data and contribute to the development and refinement of battery lifetime prediction models
• Perform electrochemical characterization, and (optional) post-mortem analysis
• Prepare, execute, and analyze cell performance and verification tests (e.g. verification and validation test)
• Maintain, calibrate, and ensure stable operation of battery test systems and lab equipment
• Support and expand laboratory tools (e.g. impedance analyzer)
• Develop, debug, and improve MATLAB/Python scripts for data processing, automation, and reporting
• Maintain and calibrate battery test systems and ensure stable operation of lab equipment
• Document results, prepare reports, and support R&D activities

More about you

• Bachelor’s or Master’s degree in Electrical Engineering, Mechanical Engineering, Materials Science, Physics, Chemistry, or a related field
• Strong interest in Li-ion batteries, electrochemistry, and power management
• Basic proficiency in MATLAB and Python programming
• Practical, hands-on attitude and ability to work on-site in a laboratory setting
• Independent, structured, and reliable work style
• Strong communication skills and team orientation
• Good spoken and written English

What We Offer

• Real-world experience in advanced battery R&D
• Exposure to industry-grade test systems and analytical tools
• Opportunity to contribute to meaningful products improving people’s lives
• A collaborative environment with mentoring from skilled engineers

Magdalena Suszek, Talent Acquisition Partner, is looking forward to receiving your complete application (cover letter, CV, references and certificates) via our online job application platform.

For this vacancy only direct applications will be considered.