{"id":45761,"url":"https://alion.io/job/rigetti-computing-senior-mechanical-cryogenic-engineer","title":"Senior Mechanical Engineer - Cryogenic","company":{"id":8970,"name":"Rigetti Computing","domain":"rigetti.com","url":"https://alion.io/company/rigetti-computing","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":79,"open_postings":7,"ghost_share":0,"stale_share":0.857,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-16T05:45:00Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Berkeley, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":165000,"max":190000,"currency":"USD","period":"year","gross":null,"usd_annual":190000},"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"SolidWorks","optional":false}],"status":"live","first_seen_at":"2026-08-04T19:44:09Z","employer_posted_date":"2026-08-04","last_verified_at":"2026-10-16T17:40:32Z","board_verified":true,"closed_at":null,"days_open":72,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":72},"description":"Rigetti Computing builds full-stack quantum computers - from superconducting qubit devices fabricated in our own foundry to cloud-accessible quantum processors. We are seeking a Senior Mechanical/Cryogenic Engineer to own the mechanical architecture of our quantum hardware systems, from room-temperature infrastructure down to the millikelvin core of our dilution refrigerators.\nYou will lead the design of the cryogenic signal chain, define mechanical interfaces across thermal stages, and work directly alongside quantum physicists, RF engineers, and systems teams. This is a high-ownership role: you will drive design decisions end-to-end, from concept through qualification, on some of the most technically demanding hardware in the industry.\nKey Responsibilities\nCryogenic Hardware Design\nOwn the mechanical design of cryogenic hardware from 300 K to millikelvin - thermal anchoring, RF wiring, flex interconnects, coaxial routing, filter housings, and connector packaging across all temperature stages.\nLead the full design lifecycle: concept, CAD, GD&T drawings, BOMs, tolerance analysis, prototype builds, qualification testing, and manufacturing release.\nDefine cryogenic mechanical interfaces and thermal conduction budgets; drive design-for-manufacturability with external machine shops and precision vendors.\nSimulation & Analysis\nPerform mechanical, thermal, and vibration analyses independently using COMSOL, ANSYS, or equivalent; use simulation results to drive design decisions and iteration.\nConduct tolerance stack-up analyses for multi-component assemblies in constrained cryostat environments.\nIntegration, Leadership & Collaboration\nLead prototype builds, system integration, and cryogenic bring-up; diagnose integration failures and drive root cause analysis.\nServe as the mechanical lead in cross-functional programs alongside quantum physicists, RF engineers, and systems teams, mentor junior engineers and lead design reviews.\nMaintain rigorous documentation - CAD models, drawings, BOMs, and revision-controlled design records - within the company PLM system.\nRequired Qualifications\nB.S. or M.S. in Mechanical Engineering or related field (M.S. preferred).\n7+ years designing complex mechanical or electromechanical systems with end-to-end hardware ownership.\nExpert-level SolidWorks - large assemblies, GD&T-compliant drawing packages, and DFM workflows.\nIndependent proficiency in SolidWorks, COMSOL or ANSYS for thermal and structural analysis.\nExperience with hardware operating in cryogenic, vacuum, or extreme thermal environments.\nStrong ME fundamentals: stress analysis, tolerance stack-ups, materials selection, and failure mode analysis.\nProven ability to lead technical efforts and collaborate across multidisciplinary teams.\nPreferred Qualifications\nDirect experience with dilution refrigerators, cryostats, or sub-Kelvin systems in quantum computing or precision instrumentation.\nKnowledge of superconducting quantum hardware architecture and millikelvin design constraints.\nRF/microwave packaging experience: connector specification, hermetic sealing, and cable routing in cryostats.\nFamiliarity with cleanroom protocols, vacuum-compatible assembly, and contamination-sensitive environments.","description_format":"text","description_chars":3233,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Quantum Computing Hardware"],"lifecycle":[{"event":"open","at":"2026-08-04T19:44:09Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 7","filings_12m":7,"filings_prev_12m":2,"green_card_filings_12m":0,"median_offered_wage_usd":177500,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":{"score":19,"band":"cold","label":"Long shot","p_open":1,"p_active":0.514,"p_room":0.36,"age_days":72,"expected_fill_days":38,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-10-16T05:45:00Z"},"pay":{"stated_usd_annual":190000,"is_top_pay":true},"html_url":"https://alion.io/job/rigetti-computing-senior-mechanical-cryogenic-engineer","json_url":"https://alion.io/job/rigetti-computing-senior-mechanical-cryogenic-engineer.json","meta":{"generated_at":"2026-10-16T19:04:32Z","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":4525,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-17T00:00:00Z"}},"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":8970},"rest":"https://alion.io/mcp/rest/get_company?id=8970"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Frigetti-computing-senior-mechanical-cryogenic-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%2Frigetti-computing-senior-mechanical-cryogenic-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%2Frigetti-computing-senior-mechanical-cryogenic-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/rigetti-computing-senior-mechanical-cryogenic-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Frigetti-computing-senior-mechanical-cryogenic-engineer"}]}