{"id":854641,"url":"https://alion.io/job/f-fluid-dynamics-engineer","title":"Fluid Dynamics Engineer","company":{"id":691631,"name":"Fuse","domain":"f.energy","url":"https://alion.io/company/f-2","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":78,"open_postings":10,"ghost_share":0,"stale_share":0.9,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-03T05:54:40Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"junior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Leandro, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":110000,"max":160000,"currency":"USD","period":"year","gross":null,"usd_annual":160000},"salary_estimate":null,"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ANSYS","optional":false},{"name":"OpenFOAM","optional":false},{"name":"Python","optional":true}],"status":"live","first_seen_at":"2026-08-19T05:37:06Z","employer_posted_date":"2026-08-19","last_verified_at":"2026-11-03T15:35:15Z","board_verified":true,"closed_at":null,"days_open":76,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":76},"description":"About Fuse\nWe are building one of the most potentially consequential companies of the century. Our mission is to accelerate the world's transition to fusion energy while safeguarding humankind. This is not a normal company. This is not a normal job. We are committed for the long term to win.\nAbout the Role\nFuse is designing and constructing Z-Star, a next-generation pulsed-power accelerator requiring the management, recirculation, filtration, and conditioning of multi-million-liter volumes of high-voltage transformer oil and deionized (DI) water.\nAs the Fluid Dynamics Engineer, you'll lead the design, simulation, and operational integration of these large-scale fluid systems from concept through commissioning.\nCore Responsibilities\nSystem Design: Design and develop large-scale fluid circuits for storing, transporting, recirculating, and reconditioning millions of liters of transformer dielectric oil and deionized water, including pump selection, piping layout, filtration trains, heat exchangers, and storage-tank configuration.\n\nCFD Simulation: Build and run high-fidelity Computational Fluid Dynamics models of oil and DI-water flow paths to optimize circulation rates, identify cavitation or turbulence risks, and ensure dielectric integrity under operational conditions.\n\nDielectric Fluid Management: Develop and maintain fluid-quality protocols including oil breakdown-voltage testing, moisture-content control, and particle filtration, consistent with high-voltage pulsed-power standards.\n\nDI Water Conditioning: Design and oversee the mixed-resin-bed ion-exchange system to maintain DI-water resistivity, dissolved-gas content, and temperature within operational limits.\n\nThermal Analysis: Perform thermohydraulic analyses to quantify heat loads from repeated pulsed discharges and design cooling strategies that maintain fluid properties within required dielectric specifications.\n\nP&ID and Documentation: Develop Piping and Instrumentation Diagrams (P&IDs), system schematics, bills of materials, and operational procedures for all fluid subsystems.\n\nCommissioning and Troubleshooting: Support fabrication, testing, and commissioning of fluid systems on-site; diagnose and resolve operational anomalies during early shot campaigns.\n\nInterdisciplinary Collaboration: Work closely with pulsed-power, high-voltage, structural, and vacuum engineering teams to ensure fluid-system integration with electrode geometry, transmission lines, and chamber design.\n\nMinimum Qualifications\nB.Sc.or M.Sc. in Mechanical Engineering, Chemical Engineering, or Applied Physics with a strong fluid-mechanics concentration.\n\nDemonstrated experience with commercial or open-source CFD tools such as ANSYS Fluent, ANSYS CFX, OpenFOAM, or COMSOL Multiphysics.\n\n2+ years designing or operating large-scale industrial fluid systems including pumps, filters, heat exchangers, and piping networks in energy, nuclear, defense, or high-voltage environments.\n\nFamiliarity with transformer oil or similar dielectric insulating fluids, including properties, degradation mechanisms, filtration, and electrical testing.\n\nStrong command of convective and forced-flow heat transfer for system-level thermal management.\n\nPreferred Qualifications\nExperience with deionized-water systems, ion-exchange resin beds, degassing, and resistivity monitoring in high-voltage or pulsed-power environments.\n\nKnowledge of pulsed power, particle accelerators, fusion energy, or high-energy-density physics facilities.\n\nKnowledge of ASME piping codes, industrial safety standards, and high-voltage facility regulations.\n\nProficiency in Python for post-processing simulation data and automating fluid-quality reporting.\n\nWhat We Value\nGive a shit. Build things you're proud of.\n\nTake responsibility. If something is broken and you can fix it, fix it. See things through.\n\nMove fast. Make decisions, learn quickly, and keep moving forward.\n\nThink bigger. Simplify relentlessly. Don't default to the safe answer.\n\nDisagree and commit. The best idea wins. Once a decision is made, we move.\n\nDesire to win. This is hard. Expect intensity. We are here to win.\n\nPlan B is to make Plan A work.\n\nAdditional Requirements\nThis is not a remote position and will require relocation if not already local to the applicable Fuse facility.\nBenefits\nMedical, dental, and vision coverage.\n\nRelocation assistance for roles that require it.\n\nFlexible time off. Take what you need, no accrual tracking.\n\n2 weeks of paid time off built into the end of each year, subject to team and business needs.\n\nSupportive leave of absence policies.\n\nPaid leave for new parents.\n\nITAR Requirements\nTo conform to U.S. Government technology export regulations, including the International Traffic in Arms Regulations (ITAR), you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.\nEqual Opportunity\nFuse is an Equal Opportunity Employer; employment with Fuse is governed on the basis of merit, competence, and qualifications and will not be influenced by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, ancestry, immigration status, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.","description_format":"text","description_chars":5393,"description_truncated":false,"requirements":{"experience_years_min":2,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Flexible time off","Relocation assistance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":true,"industries":["Nuclear Energy"],"lifecycle":[{"event":"open","at":"2026-09-13T05:41:29Z"}],"visa":[],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.28,"p_room":0.28,"age_days":76,"expected_fill_days":28,"reasons":["conf:4","stale_co","velocity","win:tail","crowd:junior"],"computed_at":"2026-11-03T05:54:40Z"},"pay":{"stated_usd_annual":160000,"is_top_pay":true},"html_url":"https://alion.io/job/f-fluid-dynamics-engineer","json_url":"https://alion.io/job/f-fluid-dynamics-engineer.json","meta":{"generated_at":"2026-11-03T16:28:07Z","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":22928,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-04T00:00:00Z"}},"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":691631},"rest":"https://alion.io/mcp/rest/get_company?id=691631"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ff-fluid-dynamics-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%2Ff-fluid-dynamics-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%2Ff-fluid-dynamics-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/f-fluid-dynamics-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ff-fluid-dynamics-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":854641}},{"tool":"search_jobs","arguments":{"company":"f.energy","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":854641},"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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