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.

Do you want to contribute to a more sustainable world? Are you excited to help shape the future of battery technology and consequently the future of consumer electronics and mobility? Can you not wait to dive into a VC-backed deep tech scale-up with the ambition to change the world?

We are looking for an enthusiastic B2B Product Marketing Internship to join our innovative and ambitious organization.

You are eager to learn and excited to work with us to make better batteries. You will work close together with technicians, battery engineers, production process engineers and other departments . You will report to Business Developer. You will be part of a young, international, ambitious and diverse team that is determined to make a better world with cleaner energy.

It is a full-time position. You will mainly be working in Leiden, and may occasionally work in Eindhoven.

You will be responsible for:

• Conduct market research to identify trends, competitive landscape, and customer needs in the battery industry.
• Analyze data to provide insights for product development and marketing strategies.
• Assist in the development of new battery products by collaborating with cross-functional teams including engineering, manufacturing, and sales. Provide input on product features, specifications, and pricing based on market research and customer feedback.
• Support the creation and execution of marketing campaigns to promote our battery products. This includes content creation for social media, website, and marketing materials
• Assist in managing digital marketing channels such as email marketing, advertising, and social media ads
• Engage with customers through various channels to gather feedback, address inquiries, and build relationships.
• If necessary, we may require you to perform activities normally undertaken by others or to take on additional activities.