{"id":1262997,"url":"https://alion.io/job/accelsius-liquid-cooling-mechanical-engineer","title":"Liquid Cooling Mechanical Engineer","company":{"id":3789955,"name":"Accelsius","domain":"accelsius.com","url":"https://alion.io/company/accelsius","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"ADP","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":["Austin, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":94000,"max_usd":178000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":6333},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"HPC","optional":false},{"name":"SolidWorks","optional":false}],"status":"live","first_seen_at":"2026-09-23T20:33:00Z","employer_posted_date":"2026-09-23","last_verified_at":"2026-11-13T08:28:53Z","board_verified":true,"closed_at":null,"days_open":50,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":50},"description":"Liquid Cooling Mechanical Engineer\nInterested in getting in at the ground floor of a new, disruptive company attacking an important multi-billion-dollar problem? Businesses and consumers continue to demand increasing data services at an exponential rate -- streaming, deep learning, analytics, loT connectivity, and more. What this means is higher performing CPUs, components, servers, and ultimately Data and Edge computing centers, all generating excessive heat that is increasingly difficult to manage with traditional cooling systems. Accelsius is developing revolutionary direct-to-chip, 2-Phase cooling technologies that empower and enable Server OEMs, Data Centers, and Edge Computing Operators, to meet performance, sustainability, scale, and cost goals while serving this high-growth market for data services.\nAccelsius is looking for a Liquid Cooling Mechanical Engineer to design server-level liquid cooling hardware for AI and HPC platforms: cold plate loops, server plumbing, manifolds, and the pressure-containing assemblies that connect them. This engineer will take designs from first prototype through production release, translating thermal engineers’ prototypes into manufacturable hardware, and will work alongside our R&D technicians to validate them in the lab. This position will report directly to the Server Cooling Product Manager and the right candidate will be hands-on, self-directed, and comfortable owning a design across engineering, manufacturing, suppliers, and customer teams.\nRole Responsibilities:\nDesign and CAD (70%)\nReview thermal engineers’ concept and first-prototype designs to confirm a path to manufacturability\nTranslate first-prototype server liquid cooling assemblies for GPU and CPU platforms into production-ready designs, including cold plate loops, tubing and hose routing, manifolds, fittings, and quick disconnects, within the space, serviceability, and interface constraints of OEM server chassis\nDesign pressure boundaries: select materials, joining methods, and fittings; establish design, proof, and burst pressures; confirm compatibility with the working fluid\nPartner with thermal engineers on plumbing sizing, pressure drop, and flow distribution, contributing packaging constraints, component selection, and manufacturability input to their analysis\nPerform FEA to evaluate deformation and stress in pressure-containing parts and assemblies\nProduce production-ready 3D models, drawings with GD&T, and BOMs; manage revisions through ECOs in our PLM system\nWork with cold plate suppliers, braze shops, and fabricators from RFQ through first article; drive DFM and resolve supplier issues\nLead design reviews and mentor early-career engineers on server plumbing design\nSupport OEM and customer engagements with integration drawings and interface specifications\nTest and Validation Support (30%)\nDefine test requirements and acceptance criteria for pressure, leak, flow, and pressure drop testing\nDefine requirements for test fixtures and hardware, and review the manufacturing team’s fixture designs against them\nSupport R&D technicians in building and running tests on our R&D test rigs\nReview test data, lead root cause investigations on failures, and carry findings into the next design revision\nQualifications for this role include:\n5+ years of experience with progressively increasing responsibility\nBachelor’s degree in mechanical engineering or similar required\nDirect experience designing liquid cooling hardware for data center servers or racks required (single-phase or two-phase)\nDemonstrated design of pressure-containing fluid systems: joint design, fitting selection, material selection, pressure rating, and leak testing\nWorking knowledge of fluid mechanics and heat transfer sufficient to collaborate with thermal engineers on sizing and performance; CFD and thermal specialization not required\nProficiency in a parametric 3D CAD tool (SolidWorks preferred) and producing manufacturing drawings with GD&T\nFEA experience evaluating structural deformation and stress in mechanical parts\nRecord of taking designs through fabrication and release with external suppliers\nTakes ownership, communicates clearly, and works across disciplines\nStartup experience is a plus\nPreferred Experience:\nWorking with cold plate vendors and brazing manufacturers\nHVAC, refrigeration, or hydronic systems design\nCold plate and fluid-component manufacturing processes: brazing, skiving, friction stir welding, machining\nFamiliarity with OCP liquid cooling specifications, ASHRAE liquid cooling guidelines, and IEC/UL 62368-1 requirements for liquid-filled components\nECO and configuration management in a PLM system\nAccelsius offers a competitive salary with equity, a full range of benefits including medical and dental, 401K, and flexible PTO.\nThe position is based in Austin, Texas.\nThis position includes the responsibilities outlined above and may also encompass additional duties as assigned to meet business and compliance needs.\nAccelsius does not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, disability, veteran status, marital status, or based on an individual's status in any group or class protected by applicable federal, state or local law. Accelsius encourages applications from minorities, women, the disabled, protected veterans, and all other qualified applicants.","description_format":"text","description_chars":5420,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["401k plan","Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Computer Components","Hardware","Servers & Data Center Hardware"],"lifecycle":[{"event":"open","at":"2026-09-25T21:16:03Z"}],"visa":[],"liveness":{"score":29,"band":"fade","label":"Fading","p_open":1,"p_active":0.645,"p_room":0.45,"age_days":49,"expected_fill_days":30,"reasons":["conf:0","win:tail"],"computed_at":"2026-11-12T10:38:37Z"},"pay":null,"html_url":"https://alion.io/job/accelsius-liquid-cooling-mechanical-engineer","json_url":"https://alion.io/job/accelsius-liquid-cooling-mechanical-engineer.json","meta":{"generated_at":"2026-11-13T12:44:53Z","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":25605,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-14T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":3789955},"rest":"https://alion.io/mcp/rest/get_company?id=3789955"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Faccelsius-liquid-cooling-mechanical-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"free","price":{"credits":0,"usd":0},"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%2Faccelsius-liquid-cooling-mechanical-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Faccelsius-liquid-cooling-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/accelsius-liquid-cooling-mechanical-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Faccelsius-liquid-cooling-mechanical-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":1262997}},{"tool":"search_jobs","arguments":{"company":"accelsius.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":1262997},"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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