Battery R&D Engineer (m/f)

• 22 July 2026 • 100% • Indefinite duration • Staefa Staefa, Switzerland Battery R&D Engineer (m/f) At Sonova, we believe that revolutionary products start with revolutionary technologies. As a Battery R&D Engineer, you will drive innovation in the field of batteries for our hearing devices and charging systems, taking next-generation energy solutions from technology scouting to product integration. This is a unique opportunity to combine deep battery expertise with innovation, engineering, and data-driven development. Working in a highly collaborative and regulated medical environment, you will contribute to shaping the battery technologies that will power the next generation of hearing solutions and chargers, thereby improving the lives of millions of people around the world. More about the position • Identify, evaluate, and qualify next-generation battery technologies, chemistries, packaging concepts, and manufacturing innovations • Collaborate with key battery suppliers to evaluate new technologies and successfully integrate them into Sonova hearing devices and chargers • Lead the characterization, verification, validation, reliability assessment, and battery life assessment throughout product development • Ensure battery integration into hearing devices and charging systems, working closely with electrical, mechanical, software, system, manufacturing, and quality engineers • Contribute to Battery Management System (BMS) concepts, including charging strategies, battery modeling, and State of Charge (SoC) and State of Health (SoH) estimation • Develop Python tools to automate testing, data analysis, and engineering workflows • Apply statistical methods and use Design of Experiments (DoE) to analyze complex engineering data, optimize battery performance, and support robust, data-driven decision-making • Stay at the forefront of battery innovation and translate emerging technologies into competitive product solutions More about you • Master's or PhD in electrical engineering, mechanical engineering, materials science, physics, chemistry, or a related field • Proven experience in developing battery technologies in medical devices, consumer electronics, IoT, automotive, or another high-tech industry • Experience working with battery suppliers and introducing new battery technologies into products • Good understanding of Battery Management Systems (BMS), battery modeling, charging strategies, and estimation algorithms such as State of Charge (SoC) and State of Health (SoH) • Deep understanding of battery technologies, electrochemistry, manufacturing processes, reliability, aging mechanisms, and verification methodologies • Strong Python programming skills for engineering automation and data analysis • Experience with JMP, statistical analysis, and Design of Experiments (DoE) • Collaborative mindset, strong analytical skills, and a passion for innovation • Hands-on attitude, ability to work on-site in a laboratory • Independent, structured, and reliable working style • Excellent communication skills and team orientation • Proficiency in spoken and written English More about what we offer As one of the leading global hearing care providers based in Switzerland, we are 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, thanks to our flexible hybrid work model. We offer a wide range of training opportunities for your professional and personal development, as well as exceptional growth prospects with individual development plans. • Hands-on experience in advanced battery R&D • Access to industry-level testing systems and analytical tools • Opportunity to contribute to meaningful products that improve people's lives • Collaborative environment with mentorship from experienced engineers Application process The talent acquisition partner looks forward to receiving your complete application (cover letter, CV, references, and certificates) via our online application platform. For this position, only direct applications will be considered.