{"id":3633250,"url":"https://alion.io/job/commonwealth-fusion-systems-subassemblies-technician","title":"Subassemblies Technician","company":{"id":8705,"name":"Commonwealth Fusion Systems","domain":"cfs.energy","url":"https://alion.io/company/commonwealth-fusion-systems","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":85,"open_postings":5,"ghost_share":0,"stale_share":0.6,"repost_share":0,"time_to_fill_p50_days":53,"computed_at":"2026-11-06T05:58:05Z"}},"role":"Field & Service","role_family":"Field & Service","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Devens, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":30,"max":52,"currency":"USD","period":"hour","gross":null,"usd_annual":104000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-11-02T19:28:51Z","employer_posted_date":"2026-11-02","last_verified_at":"2026-11-06T06:25:19Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Join the power movement as a Subassemblies Technician\nThe Subassemblies team is responsible for delivering precision, ultra high vacuum subassemblies for seven major teams that go into the SPARC Tokamak. As a Subassemblies Specialist, you will be the last set of hands and eyes on critical parts; as such, meticulous attention to detail in build quality is necessary. You will draw upon your years of technical experience building complex systems to help streamline workflows and deliver the best possible parts. This role is truly a once in a lifetime opportunity to use hands-on assembly skills to accelerate the development of fusion energy by ensuring SPARC is built on time and to high quality. The main systems you will be building are high power RF antennas, plasma facing components, port plugs, error field correction coils, vertical stability coils and plasma diagnostics; the bespoke tools used for real-time control of a burning plasma and to achieve SPARC's science mission.\nWhat you'll do:\nBuild complex and simple subassemblies and components while maintaining all cleanliness specification\nPerform testing and check-outs with helium leak checking and various other check-out equipment\nWork together with scientists and engineers to ensure assemblies are meeting their design intent\n\nAssist with precision alignment and installation of active and passive optical systems\n\nActively participate in maintaining mandatory cleanliness of work area and clean room\n\nParticipate in first encounter reviews to quickly overcome non-conformances encountered in the field\n\nWhat we’re looking for:\nHigh school diploma or equivalent experience\n7+ years in a highly technical assembly role; e.g., aerospace/aircraft, racing, semiconductor, oil & gas, laboratory, wind, automotive\nLearns from mistakes and builds from them\nCan operate a forklift\nExperience building Intricate projects end to end\nAbility to use basic machining tools; e.g., lathe/mill\nExperience using measurement tools\nExperience rigging and lifting heavy components\nHighly self-motivated, organized, and passionate about their work and curious about what we are building\nWillingness to push through long hours when needed and open to learning new skills\nBonus points:\nSoldering experience\nKnowledge of clean room best practices\nKnowledge of cryogenic systems\nEssential Requirements:\nAbility to occasionally lift up to 50 lbs\nAbility to perform activities such as sitting, climbing, stooping, typing, and standing for extended periods of time\nWillingness to occasionally travel for required nights/weekends/on-call\nDedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics","description_format":"text","description_chars":2731,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"high_school","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Nuclear Energy","Nuclear Engineering"],"lifecycle":[{"event":"open","at":"2026-11-02T20:38:02Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":3,"expected_fill_days":53,"reasons":["conf:4","velocity","win:early","comp:brand"],"computed_at":"2026-11-06T05:58:05Z"},"pay":{"stated_usd_annual":104000,"is_top_pay":true},"html_url":"https://alion.io/job/commonwealth-fusion-systems-subassemblies-technician","json_url":"https://alion.io/job/commonwealth-fusion-systems-subassemblies-technician.json","meta":{"generated_at":"2026-11-06T08:32:52Z","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":15369,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-07T00:00:00Z"}},"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":8705},"rest":"https://alion.io/mcp/rest/get_company?id=8705"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcommonwealth-fusion-systems-subassemblies-technician"},{"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%2Fcommonwealth-fusion-systems-subassemblies-technician"},{"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%2Fcommonwealth-fusion-systems-subassemblies-technician"},{"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/commonwealth-fusion-systems-subassemblies-technician\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcommonwealth-fusion-systems-subassemblies-technician"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3633250}},{"tool":"search_jobs","arguments":{"company":"cfs.energy","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3633250},"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); 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