{"id":193734,"url":"https://alion.io/job/c12-thermal-systems-engineer","title":"Thermal Systems Engineer","company":{"id":1905,"name":"C12","domain":"c12qe.com","url":"https://alion.io/company/c12qe","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":95,"open_postings":8,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":67,"computed_at":"2026-11-07T05:47:08Z"}},"role":"Hardware","role_family":"Hardware","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":["Paris, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":59000,"max_usd":109000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":16},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"MATLAB","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-07-07T16:59:09Z","employer_posted_date":"2026-07-07","last_verified_at":"2026-11-07T09:55:33Z","board_verified":true,"closed_at":null,"days_open":122,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":122},"description":"Your role at C12 Quantum Electronics:\nAs Thermal Modeling & Cryogenic Systems Engineer (Quantum Hardware), you will play a central role in enabling the next generation of our quantum computers. You will own the thermal architecture and thermal models of complex cryogenic quantum systems that combine a growing number of qubits with increasingly sophisticated cryo-electronics.\nYour work will be critical to ensuring system scalability, thermal stability and quantum performance.\nYou will operate at the intersection of cryogenics, thermal physics, electronics and quantum hardware whilst working closely with quantum physicists and engineers.\nKey responsibilities:\nDevelop and maintain system-level thermal models of quantum hardware systems, including qubits, wiring, passive components, and cryo-electronics across all cryogenic stages\n\nWork closely with system engineers and physicists to identify thermal constraints and scaling bottlenecks, evaluate architecture options and guide system design decisions.\n\nOwn the thermal budget, including trade-off analysis of different technological options (qubit architectures, wiring schemes, cryo-electronics integration levels, materials)\n\nOwn the thermal performance of cryogenic quantum hardware platforms by defining and executing validation experiments, correlating predictions with measurements, investigating discrepancies and implementing solutions to inform thermal and system architecture decisions\n\nDesign and evaluate thermalization strategies for signals, wiring, and cryo-electronics, including materials and interfaces, to minimize heat loads while preserving signal integrity.\n\nParticipate in the integration and operation of cryogenic test platforms, including instrumentation, thermal characterization and investigation of unexpected system behavior\n\nDocument thermal assumptions models, and design rules to support product development\n\nAbout you:\nYou have a PhD in Mechanical Engineering, Physics, Cryogenics or a closely related field with industry experience or a Masters with at least 5 years of experience in industry\n\nYou have a strong background in thermal engineering and cryogenics\n\nYou have proven experience building and maintaining thermal models to guide design decisions\n\nYou are comfortable working across disciplines with quantum hardware, electronics, and systems teams\n\nYou are hands-on with dilution refrigerators and multi-stage cryogenic platforms\n\nYou have demonstrated expertise in thermal modeling and simulation using analytical and numerical methods.\n\nYou have experience defining and managing thermal budgets in systems with dense wiring and/or cryo-electronics\n\nYou are familiar with RF and DC wiring, signal thermalization and heat sinking at cryogenic temperatures\n\nYou have experience validating thermal models through experimental measurements and data analysis\n\nYou have programming or scripting experience for data analysis and model automation (e.g. Python, Matlab)\n\nPrior experience in quantum hardware, superconducting systems, or other ultra-low-temperature technologies is a strong plus","description_format":"text","description_chars":3090,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Quantum Science & Computing","Quantum Computing Hardware"],"lifecycle":[{"event":"open","at":"2026-09-03T04:44:51Z"}],"visa":[],"liveness":{"score":22,"band":"cold","label":"Long shot","p_open":1,"p_active":0.618,"p_room":0.36,"age_days":122,"expected_fill_days":67,"reasons":["conf:4","win:tail","crowd:"],"computed_at":"2026-11-07T05:47:08Z"},"pay":null,"html_url":"https://alion.io/job/c12-thermal-systems-engineer","json_url":"https://alion.io/job/c12-thermal-systems-engineer.json","meta":{"generated_at":"2026-11-07T12:34:20Z","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":14224,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-08T00:00:00Z"}},"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":1905},"rest":"https://alion.io/mcp/rest/get_company?id=1905"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fc12-thermal-systems-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%2Fc12-thermal-systems-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%2Fc12-thermal-systems-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/c12-thermal-systems-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fc12-thermal-systems-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":193734}},{"tool":"search_jobs","arguments":{"company":"c12qe.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":193734},"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. Docs: https://alion.io/developers"}}