{"id":746920,"url":"https://alion.io/job/fluxmobility-thermal-systems-mechanical-engineer","title":"Thermal Systems & Mechanical Engineer","company":{"id":673917,"name":"Flux Mobility","domain":"fluxmobility.ch","url":"https://alion.io/company/fluxmobility","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","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":["Winterthur, Switzerland"],"countries":["CH"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":110000,"max_usd":185000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":9},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Verification & Validation","optional":false}],"status":"live","first_seen_at":"2026-09-02T07:13:50Z","employer_posted_date":"2026-09-02","last_verified_at":"2026-11-02T17:55:29Z","board_verified":true,"closed_at":null,"days_open":61,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":61},"description":"Your role.\nWe are looking for an experienced Thermal Systems & Mechanical Engineer to take technical ownership of the thermal management of our electric light commercial vehicles and the mechanical design that goes with it.\nIn this role, you own the thermal architecture of the vehicle: battery cooling and heating, power electronics and e-motor cooling, cabin climate, and the coolant and refrigerant circuits that connect them. You size these systems, design and integrate the mechanical hardware (pumps, valves, heat exchangers, lines and mounts) and make sure they work together across the full operating range, from alpine winters to fully loaded summer duty cycles.\nYou work closely with our mechanical, electrical and software teams. You define the thermal requirements and operating strategy together with software, and support development from concept through simulation and calculation to verification in the vehicle and in the field.\nAt Flux, you will work in a small team with short decision-making paths. You take ownership of technical decisions early and directly shape the architecture of our vehicles.\nWhat you can contribute.\nTake technical ownership of the vehicle's thermal architecture: battery thermal management, power electronics and e-motor cooling, cabin HVAC, and the associated coolant and refrigerant circuits.\n\nSize and design cooling and heating systems, including pumps, valves, radiators, chillers, heat exchangers, expansion tanks, lines and heat pump and refrigerant circuits.\n\nCarry out thermal sizing and simulation (1D system simulation and, where needed, CFD) and correlate models against component and vehicle test data.\n\nDesign and integrate the mechanical hardware of the thermal system into the vehicle (packaging, mounting, routing and interfaces to the vehicle structure) together with the design team.\n\nDefine the thermal requirements and thermal operating strategy together with the software team.\n\nPlan and lead thermal verification and validation: component tests, climatic-chamber testing and on-vehicle testing in hot and cold conditions, in collaboration with external partners.\n\nWork with suppliers of thermal components (compressors, pumps, heat exchangers, HVAC units) on selection, specification and validation.\n\nSupport aftersales and the field team with thermal-related field issues and root-cause analysis.\n\nAnalyse test and field data to continuously improve the thermal and mechanical design.\n\nHow you will succeed in this role.\nDegree in mechanical engineering, automotive engineering, mechatronics, process/energy engineering or a comparable discipline.\n\nAt least 5 years of industry experience in thermal systems or thermal management, ideally in automotive or a comparably demanding industry.\n\nPractical experience with vehicle thermal management topics such as battery cooling, HVAC/climate, refrigerant circuits or heat pump systems.\n\nExperience with thermal and 1D system simulation tools (e.g. GT-SUITE, KULI, Simcenter Amesim or Simscape) and with correlating models to test data.\n\nSolid mechanical design skills and a good understanding of fluid systems e.g. pumps, valves, heat exchangers and coolant/refrigerant circuits.\n\nExperience working with suppliers and development partners.\n\nAbility to take technical ownership and systematically develop complex systems.\n\nEnjoy working across disciplines in a pragmatic, fast-moving team.\n\nYour environment.\nAt Flux, we develop electric commercial vehicles in small, highly responsible teams. Our vehicles are already operating in the real world, on construction sites, in cities and in the daily operations of our customers.\nThat means decisions are made close to the product. Engineers take responsibility for their systems throughout the entire development cycle, from concept and testing through to issues seen in the field.\nIf you enjoy developing robust thermal and mechanical solutions, taking ownership and working in an environment where execution matters more than hierarchy, this role is a good fit for you.","description_format":"text","description_chars":4034,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Automotive Manufacturing"],"lifecycle":[{"event":"open","at":"2026-09-11T14:26:56Z"}],"visa":[],"liveness":{"score":14,"band":"cold","label":"Long shot","p_open":1,"p_active":0.5,"p_room":0.28,"age_days":60,"expected_fill_days":30,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-11-02T06:13:15Z"},"pay":null,"html_url":"https://alion.io/job/fluxmobility-thermal-systems-mechanical-engineer","json_url":"https://alion.io/job/fluxmobility-thermal-systems-mechanical-engineer.json","meta":{"generated_at":"2026-11-02T18:57:27Z","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":26438,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-03T00:00:00Z"}},"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":673917},"rest":"https://alion.io/mcp/rest/get_company?id=673917"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffluxmobility-thermal-systems-mechanical-engineer"},{"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%2Ffluxmobility-thermal-systems-mechanical-engineer"},{"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%2Ffluxmobility-thermal-systems-mechanical-engineer"},{"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/fluxmobility-thermal-systems-mechanical-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffluxmobility-thermal-systems-mechanical-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":746920}},{"tool":"search_jobs","arguments":{"company":"fluxmobility.ch","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":746920},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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