{"id":3283178,"url":"https://alion.io/job/eh-group-engineering-senior-stack-scientist","title":"Senior Stack Scientist","company":{"id":3829118,"name":"EH Group Engineering","domain":"eh.energy","url":"https://alion.io/company/eh-4","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Science & Research","role_family":"Science & Research","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Nyon, Switzerland"],"countries":["CH"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":83000,"max_usd":187000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":1296},"experience_years_min":12,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"MATLAB","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-10-26T14:58:51Z","employer_posted_date":"2026-10-26","last_verified_at":"2026-10-27T11:32:07Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Senior Stack Scientist\nAbout EH Energy Engineering\nEH 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.\nAs 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.\nKey Responsibilities\nLead stack-level performance and durability investigations, from short stacks to full-size stacks.\n\nDefine and run stack test campaigns: polarisation, EIS, cell voltage monitoring, durability and accelerated stress tests under realistic duty cycles.\n\nAnalyse water management, thermal behaviour, gas distribution and cell-to-cell uniformity, and identify what limits performance.\n\nInvestigate stack degradation and failure modes, including post-mortem analysis, and lead root-cause work with the materials, process and design teams.\n\nDevelop and validate stack models (electrochemical, thermal, fluidic) to guide design choices and operating strategies.\n\nSet the operating windows, conditioning and break-in procedures, and the diagnostic methods used in development and production.\n\nTranslate results into clear requirements for flow fields, bipolar plates, MEAs, sealing and compression.\n\nMentor junior scientists and engineers, and present results to internal stakeholders and partners.\n\nSkills and Experience Required\nPhD or MSc in electrochemistry, chemical engineering, mechanical engineering, materials science, physics or a related field.\n\n12+ years of experience in fuel cell stack development or testing (PEM preferred).\n\nStrong grasp of stack physics: water and heat management, reactant distribution, contact resistance and compression.\n\nHands-on experience with stack test benches, cell voltage monitoring, EIS and durability/AST protocols.\n\nSolid understanding of MEA, GDL and bipolar plate degradation mechanisms.\n\nExperience with modelling and data analysis tools (e.g. Python, MATLAB, COMSOL or similar).\n\nAbility to turn complex data into clear, actionable recommendations.\n\nTeam player who can also work autonomously in a fast-moving environment.\n\nManagement experience\n\nEnglish is mandatory; French or German is a plus.\n\nStart date: Immediately","description_format":"text","description_chars":2584,"description_truncated":false,"requirements":{"experience_years_min":12,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Hydrogen Energy"],"lifecycle":[{"event":"open","at":"2026-10-26T17:29:54Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":6,"reasons":["conf:3","win:early"],"computed_at":"2026-10-27T05:46:45Z"},"pay":null,"html_url":"https://alion.io/job/eh-group-engineering-senior-stack-scientist","json_url":"https://alion.io/job/eh-group-engineering-senior-stack-scientist.json","meta":{"generated_at":"2026-10-27T11:32:58Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":13691,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-28T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3829118},"rest":"https://alion.io/mcp/rest/get_company?id=3829118"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Feh-group-engineering-senior-stack-scientist"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Feh-group-engineering-senior-stack-scientist"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Feh-group-engineering-senior-stack-scientist"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/eh-group-engineering-senior-stack-scientist\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Feh-group-engineering-senior-stack-scientist"}]}