Senior Project & Equipment Mechanical Engineer

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 seeking a highly skilled Senior Project & Equipment Mechanical Engineer to take on a dual-role position, starting immediately and evolving through 2026 and beyond. You will support the successful delivery of the first silicon anode plant in Europe, to be situated in Eindhoven. You will lead the specification, design coordination, and installation oversight of all mechanical utility systems, such as HVAC, process cooling, dust management systems, gas distribution, and safety infrastructure and From 2027 onwards – You will transition into the Production Department, responsible for maintaining and improving equipment performance across the facility, with a strong focus on vacuum deposition systems and all ancillary equipment & utilities required to run these. You will ensure the reliability, maintainability, and safety of both equipment and infrastructure, while mentoring technical staff and driving continuous improvement.

What will be your responsibilities?

Phase 1: Project Phase (until end of 2026)

• Owner of process and tool utility requirements and technical specifications for mechanical systems (e.g. HVAC, process gases, cooling water, air, dust management).

• Produce plant-wide FMEA and HAZOP and manage the design and procurement of a factory safety system to mitigate all identified risks.

• Coordinate with design partners, contractors, and equipment vendors to ensure mechanical systems meet technical, functional, and safety requirements.

• Provide technical review of engineering drawings, installation plans, P&IDs, and equipment layouts.

• Oversee mechanical installation work on site; monitor progress, quality, and compliance with specifications.

• Act as first point of contact for utility system queries from suppliers, installers, and internal stakeholders.

• Support system commissioning and performance testing, including FAT/SAT coordination.

• Identify and resolve engineering conflicts or installation issues that may arise during fit-out.

• Ensure long-term maintainability is considered in all plant infrastructure designs.

• Document decisions, changes, and as-built conditions for future operations and maintenance.

Phase 2: Production Phase (from 2027)

• Ensure optimal performance of vacuum deposition equipment through preventive and corrective maintenance.

• Lead continuous improvement initiatives to increase uptime, reliability, and process performance.

• Maintain and improve technical documentation, procedures, and safety systems.