Material Scientist

Material Scientist – pure silicon anode

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 currently looking for an energetic  Material Scientist – pure silicon anode  to join our innovative and ambitious organization.

About Leyden Jar
At  Leyden Jar Technologies , we’re on a mission to redefine the future of energy storage. Our goal is to become the world’s innovation leader in advanced battery anodes, empowering the next generation of batteries that drive progress.

Why does this matter? Because the world needs higher energy density batteries not just for better consumer electronics, but for electric vehicles, e-flight, and beyond. While the battery industry typically advances by only 3% per year, our breakthrough pure silicon anode technology delivers an improvement of up to 70%, a true game changer. Often called the “holy grail” of the battery industry, our technology unlocks new possibilities for electrification, sustainability, and resilience in global supply chains.

What we do:

We produce pure silicon anode rolls that fit seamlessly into existing battery cell manufacturing lines, enabling customers to make a quantum leap in performance or create entirely new product categories.

Our initial focus is on consumer electronics, with automotive applications already in development.

By leveraging semiconductor thin-film technology (plasma deposition) and scaling it to battery anodes, we’ve overcome the long-standing challenges of silicon in batteries, delivering durability and efficiency at scale.

To meet global demand, we’re scaling up:

Plant One  in Eindhoven opened in 2026 and is now ramping up to produce anode rolls and validate our roll-to-roll production tools.

Plant Two , our large-scale production facility, will follow, establishing Leyden Jar as a key player in the global battery market.

This is an enormous opportunity and an ambitious journey. It requires bold, creative, and diverse minds who share our passion for innovation and sustainability. At Leyden Jar, we value different perspectives, inclusive collaboration, and gender equality because we know that diversity fuels breakthrough ideas.

Your mission
As a Material Scientist in Product Development Department, you play a key role in designing, synthesizing, characterizing and optimizing pure silicon anodes, and you take end-to-end ownership of the development topics that turn our technology into products. You own your topics from hypothesis to validated result: you design and run the experimental work, characterize the material, conduct the in-depth analysis, and drive the technical decision that follows.

You work with a high degree of autonomy: you are trusted to run complex development topics independently and to set their technical direction, in close coordination with the Product Technical Lead.

Your work sits at the heart of our technology: learning and establishing the relationship between PECVD process conditions, material properties and battery performance, planning and executing experiments to improve anode performance, and building the characterization methods that define the Si anode product. You do this in close coordination with the battery, process, equipment engineering and production teams, and with external partners, research institutes and universities.

You will be working on:

Owning development topics end to end — from problem definition and experimental design through execution, in-depth analysis, and a documented technical conclusion.

Establishing characterization methods and…