About LeydenJar
At LeydenJar 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.
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Our initial focus is on consumer electronics, with automotive applications already in development.
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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:
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PlantOne in Eindhoven opens in 2026, producing anode rolls and validating our roll-to-roll production tools.
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PlantTwo, our large-scale production facility, will follow, establishing LeydenJar 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 LeydenJar, we value different perspectives, inclusive collaboration, and gender equality because we know that diversity fuels breakthrough ideas.
We are looking for a dedicated Production Technician to support our 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. Your work will be supervised by senior process engineers, and you will report to product line Manager. 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 (40 hours a week) position and working from home is not possible. Your main working location will be in Eindhoven.
You will be responsible for:
Production Process Management:
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Oversee the day-to-day production operations, ensuring compliance with quality standards, safety regulations, and production schedules.
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Efficient production
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Preparation PECVD production and R&D machines
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implement corrective actions as necessary.
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Collaborate with other departments Technical Expertise:
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Troubleshoot equipment malfunctions and technical issues, coordinating repairs and maintenance activities as needed.
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Implement best equipment operation, maintenance, and calibration practices to maximize efficiency and minimize downtime.
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Support maintaining of the machines in close cooperation our partners Quality Assurance:
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Work closely with the quality assurance team and implement improvements to the production process. Documentation and Reporting:
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Maintain accurate records of production activities Continuous Improvement:
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Identify opportunities for process optimization, cost reduction, and waste minimization within the production process.
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Propose and implement initiatives to improve efficiency, productivity, and overall performance.
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Process improvements to achieve a constant quality of our innovative products
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Initiatives to improve the machine, the maintenance, and the expanding production location.
About you:
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You have completed intermediate vocational education MBO/equal level of education in mechanical engineering, mechatronics or similar.
- Working experience in production environment/ working with production inspection vacuum equipment, and/or roll-to-roll equipment is a plus.
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One year related experience in maintenance of facilities & equipment demonstrating strong communication skills and tact.
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You possess affinity to large, high-tech machines and you are comfortable in taking responsibility to finish the job on your own, once it is well explained.
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You understand that working in a scale-up means working in an environment where many things happen and where plans change.
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You find it easy to listen and talk to people and bring a smile to work.
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You have good command of computers, e.g. MS 365 and ability to communicate in English or Dutch.
Competences:
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Thorough, independent, proactive and do not mind doing repetitive work
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Enjoy following rules and standard operating procedures
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Teamwork-Facilitates cooperation between different teams or functions.
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Flexibility- Handles a range of tasks and shifts; adjusts quickly to operational priorities.
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Problem Analysis- Uses manuals and standard procedures to diagnose common equipment failures.
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Technical Skills and competences- Executes preventive and corrective maintenance independently on common equipment.
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Initiative- Suggests small improvements to procedures; volunteers to assist teammates.
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Quality awareness -Strives for accuracy in production records and documentation.
Why LeydenJar?
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Unleash Your Potential: Step into a workplace where growth and ownership go hand in hand. We empower every individual regardless of background, gender, or identity to thrive and achieve their career aspirations.
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Pension & Insurance Security: We care about your future. LeydenJar contributes 10% on top of your monthly gross salary toward your pension and life insurance, ensuring long-term security for you and your loved ones.
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Recharge & Refresh: Enjoy 25 vacation days per year (based on full-time hours) because work-life balance is essential for everyone.
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Travel Made Easy: We cover your home-to-work travel costs with €0.25 per kilometer or provide an NS Business Card for hassle-free public transportation.
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Continuous Learning: Access our online learning platform (Udemy) to develop your skills and unlock new opportunities for personal and professional growth.
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Diverse, Inclusive & Equal: Be part of an international team of 20+ nationalities, where everyone’s voice matters, and where diversity, equity, and inclusion are more than values they’re actions.
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Community & Connection: From team-building events and monthly lunches to year-end celebrations and inclusive gatherings, we create spaces where everyone feels welcome and engaged.
Are you ready to take on the challenge as a Production technician?
We are looking forward to your application!
We aim to make our recruitment process as transparent and enjoyable as possible. Depending on the role, the process may include interviews, assessments, reference checks, and pre-employment screening.
If you'd like to learn more about LeydenJar 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.
