About LeydenJar

LeydenJar Technologies aims to become world’s innovation leader in advanced battery anodes to energize batteries for progress. High energy density of battery cells is an urgent and unmet need for a wide range of industries from consumer electronics to electric vehicles. By addressing the bottleneck of the battery anode, LeydenJar can improve this by 70% in an industry that can only improve 3% per year. Our pure silicon anode is regarded as the holy grail to achieve in the battery industry. Progress is not only about enabling new products, it also means a more sustainable supply chain, resilience and access to battery technology in geopolitical context and enabling electrification.

Our business model is to provide pure silicon anode rolls that fit directly in the battery plants of cell partners, allowing our clients to make step change in their product performance, or to allow new product categories such as e-flight. Our immediate focus in on the consumer electronics industry, with first automotive application development starting in shortly. To produce pure silicon anodes, we have crossed over from semicon thin film technology (plasma deposition) to anode production. This has given us a unique product quality that can last long without the problems associated with silicon as a battery material. To produce this material at scale we have pioneered roll to roll production tools that we will deploy in PlantOne in Eindhoven, expected to open in 2026. We will produce rolls and validate the production tools, allowing us to ramp up to large commercial production in PlantTwo (location to be determined). Ramping up to become a leading player in the battery market is an enormous opportunity, but also daunting development that requires a team of energy dense professional leaders.

Are you excited to help shape the future of battery technology and consequently the future of consumer electronics and mobility? Are you all set to dive into a VC-backed deep tech scale-up with the ambition to change the world?

Then hurry up and join our multi-national team of ambitious, innovative and entrepreneurial colleagues!

We are looking for a dedicated QC Technician to support our production and pre-pilot operations, who enjoys working with high-tech equipment and can carry out repetitive tasks precisely.

You are eager to learn and excited to work with us to make better batteries. You will report to the QHSSE manager and will work within the QC team and close to engineers. You will be part of a young, international, ambitious and diverse organisation that is determined to make a better world with cleaner energy.

It is a full-time position /no shifts!/ and working from home is not possible. Your main working location will be in Eindhoven.

You will be responsible for:

• Quality control of the produced materials and raw materials
• Preparation of materials for testing at the various laboratories
• Maintaining of the equipment in close cooperation with the suppliers

Furthermore, you will assist with:

• Planning of testing and communication to engineers, production and laboratories
• Improvement of test methods and system set up
• Ordering of required QC materials