Senior Stack Scientist

<p style="min-height:1.5em"><strong>Senior Stack Scientist</strong></p><p style="min-height:1.5em"><strong>About EH Energy Engineering</strong></p><p style="min-height:1.5em">EH Energy develops fuel cell technology for heavy-duty mobility and large-scale stationary power. Our redesigned fuel cell is more compact, has higher power density and costs less to produce. We build high-performance, cost-effective fuel cell solutions to help address climate change and the move toward decentralised energy.</p><p style="min-height:1.5em">As Senior Stack Scientist, you will own the scientific understanding of how our stacks perform and age. You will connect cell-level electrochemistry with stack-level design, operating conditions and manufacturing, and turn that understanding into stacks with higher power density, longer life and repeatable performance.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>Key Responsibilities</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Lead stack-level performance and durability investigations, from short stacks to full-size stacks.</p></li><li><p style="min-height:1.5em">Define and run stack test campaigns: polarisation, EIS, cell voltage monitoring, durability and accelerated stress tests under realistic duty cycles.</p></li><li><p style="min-height:1.5em">Analyse water management, thermal behaviour, gas distribution and cell-to-cell uniformity, and identify what limits performance.</p></li><li><p style="min-height:1.5em">Investigate stack degradation and failure modes, including post-mortem analysis, and lead root-cause work with the materials, process and design teams.</p></li><li><p style="min-height:1.5em">Develop and validate stack models (electrochemical, thermal, fluidic) to guide design choices and operating strategies.</p></li><li><p style="min-height:1.5em">Set the operating windows, conditioning and break-in procedures, and the diagnostic methods used in development and production.</p></li><li><p style="min-height:1.5em">Translate results into clear requirements for flow fields, bipolar plates, MEAs, sealing and compression.</p></li><li><p style="min-height:1.5em">Mentor junior scientists and engineers, and present results to internal stakeholders and partners.</p></li></ul><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>Skills and Experience Required</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">PhD or MSc in electrochemistry, chemical engineering, mechanical engineering, materials science, physics or a related field.</p></li><li><p style="min-height:1.5em">12+ years of experience in fuel cell stack development or testing (PEM preferred).</p></li><li><p style="min-height:1.5em">Strong grasp of stack physics: water and heat management, reactant distribution, contact resistance and compression.</p></li><li><p style="min-height:1.5em">Hands-on experience with stack test benches, cell voltage monitoring, EIS and durability/AST protocols.</p></li><li><p style="min-height:1.5em">Solid understanding of MEA, GDL and bipolar plate degradation mechanisms.</p></li><li><p style="min-height:1.5em">Experience with modelling and data analysis tools (e.g. Python, MATLAB, COMSOL or similar).</p></li><li><p style="min-height:1.5em">Ability to turn complex data into clear, actionable recommendations.</p></li><li><p style="min-height:1.5em">Team player who can also work autonomously in a fast-moving environment.</p></li><li><p style="min-height:1.5em">Management experience</p></li><li><p style="min-height:1.5em">English is mandatory; French or German is a plus.</p></li></ul><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>Start date: Immediately</strong></p><p>Find more <a href="https://www.arbeitnow.ch/english-speaking-jobs">English Speaking Jobs in Switzerland</a> on Arbeitnow</a>