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 On-call Laboratory Technician to join our innovative and ambitious organization.

About LeydenJar

LeydenJar is a high-tech company, developing pure silicon anodes for a lithium-ion battery that will change the world. We are proud that, here at LeydenJar, we:

• Boost lithium-ion battery energy density by 70% by using 10x thinner anodes
• Improved cycle life of cells >450 cycles
• Achieved fast charging to 60% in under 10 min!

We are currently exiting R&D phase, and are moving towards commercial production of anode foil. LeydenJar Plant One will open in 2026.

We are looking for a dedicated Laboratory Technician to support our pre-pilot battery cell manufacturing operations, someone who enjoys working with high-tech equipment and working with their hands, and can ensure that manufacturing processes are carried out precisely and efficiently. You will be part of a young, international and ambitious team that is determined to make an impact towards a better world with cleaner energy.

You will be responsible for:

• Production of battery cells in the lab;
• Logging/processing data from the production builds;
• Executing tests of battery cells using electrical equipment;
• Working according to lab planning and carrying out tasks to remain on schedule;
• Maintenance of assigned machinery;
• Ensuring that the lab is a clean and safe environment, by adhering to all Health, Safety and Security guidelines and procedures;
• Stock-taking and ordering materials;
• Continuous improvement of procedures and safety in the lab.