Laboratory Technician (battery R&D) Leiden

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. 

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.

What we expect from you:

• You are detailed and thorough;

• You like being hands-on and don’t enjoy sitting behind a desk all day;

• You have a positive attitude and are full of energy. You are a driving part of our Lab in Leiden, and you want to make it run even better and safer;

• You carry out plans as agreed, but you are flexible to change as required

• Applied science/College (MBO/HBO) degree in a technical discipline;

• Good communication skills in English;

• Experience in a chemical / mechanical and / or electrical lab is a plus;

• Experience with some coding (Python) is a plus;

• Experience with HSE implementation in a lab/workshop environment;

• Capability of CAD drawing is a plus;

• Good skills in MS Excel / Word / PowerPoint, and fine with learning new IT apps;

• Must be an EU citizen (so you can freely work in The Netherlands) or be in possession of a valid residence permit to work in The Netherlands.

Why LeydenJar?

🌟 Unleash your potential: Dive into a realm where personal growth meets ownership, with the backing to achieve your career aspirations.

💼 Benefits beyond the basics: Enjoy a treasure trove of perks, from a comprehensive pension plan to travel reimbursement, insurance coverage, and even a mental health platform. And yes, there's fresh fruit every Monday because why not?

🍹 Thirsty for Fun: Join us every first Thursday for 'Thirsty Thursday,' where we unwind and share good vibes in a laid-back setting!

🎉 Fun with a purpose: Dive into our calendar of internal events, mixing business with pleasure, and fuel your personal development with exclusive trainings and courses.

Are you ready to take on the challenge as a Laboratory Technician?

We are looking forward to your application!

If you'd like to learn more about LeydenJar's amazing team, see below:

At LeydenJar we value diversity, and we provide equal opportunities to all applicants without regard to race, color, ethnicity, religion, gender, pregnancy/childbirth, age, national origin, sexual orientation, disability, etc. If there are two or more applicants of equal suitability for a certain position, LeydenJar can under circumstances decide to select applicants based on positive discrimination in full compliance with all relevant and applicable law.