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About the Role
Accelsius is developing revolutionary direct-to-chip, 2-Phase cooling technologies to meet performance, sustainability, scale, and cost goals for server OEMs, Data Centers, and Edge Computing Operators. This role will design server-level liquid cooling hardware for AI and HPC platforms, taking designs from prototype through production release.
Responsibilities
- Review thermal engineers’ concept and first-prototype designs to confirm a path to manufacturability
- Translate 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
- Design pressure boundaries: select materials, joining methods, and fittings; establish design, proof, and burst pressures; confirm compatibility with the working fluid
- Partner with thermal engineers on plumbing sizing, pressure drop, and flow distribution, contributing packaging constraints, component selection, and manufacturability input to their analysis
- Perform FEA to evaluate deformation and stress in pressure-containing parts and assemblies
- Produce production-ready 3D models, drawings with GD&T, and BOMs; manage revisions through ECOs in our PLM system
- Work with cold plate suppliers, braze shops, and fabricators from RFQ through first article; drive DFM and resolve supplier issues
- Lead design reviews and mentor early-career engineers on server plumbing design
- Support OEM and customer engagements with integration drawings and interface specifications
- Define test requirements and acceptance criteria for pressure, leak, flow, and pressure drop testing
- Define requirements for test fixtures and hardware, and review the manufacturing team’s fixture designs against them
- Support R&D technicians in building and running tests on our R&D test rigs
- Review test data, lead root cause investigations on failures, and carry findings into the next design revision
Requirements
- 5+ years of experience with progressively increasing responsibility
- Bachelor’s degree in mechanical engineering or similar required
- Direct experience designing liquid cooling hardware for data center servers or racks required (single-phase or two-phase)
- Demonstrated design of pressure-containing fluid systems: joint design, fitting selection, material selection, pressure rating, and leak testing
- Working knowledge of fluid mechanics and heat transfer sufficient to collaborate with thermal engineers on sizing and performance
- Proficiency in a parametric 3D CAD tool (SolidWorks preferred) and producing manufacturing drawings with GD&T
- FEA experience evaluating structural deformation and stress in mechanical parts
- Record of taking designs through fabrication and release with external suppliers
- Takes ownership, communicates clearly, and works across disciplines
- Startup experience is a plus
- Working with cold plate vendors and brazing manufacturers
- HVAC, refrigeration, or hydronic systems design
- Cold plate and fluid-component manufacturing processes: brazing, skiving, friction stir welding, machining
- Familiarity with OCP liquid cooling specifications, ASHRAE liquid cooling guidelines, and IEC/UL 62368-1 requirements for liquid-filled components
- ECO and configuration management in a PLM system
Skills
- CAD
- FEA
- SolidWorks
- GD&T
- PLM system
- DFM
- Fluid mechanics
- Heat transfer
- Pressure testing
- Leak testing
- Flow testing
- Pressure drop testing
Location
- Austin, Texas
Work Type
- Full-time
Experience Level
- 5+ years
Education Level
- Bachelor's degree in mechanical engineering or similar
Benefits
- Competitive salary with equity
- Full range of benefits including medical and dental
- 401K
- Flexible PTO
About the Company
- 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.
- Businesses and consumers continue to demand increasing data services at an exponential rate -- streaming, deep learning, analytics, loT connectivity, and more.
- Higher performing CPUs, components, servers, and ultimately Data and Edge computing centers are generating excessive heat that is increasingly difficult to manage with traditional cooling systems.
Equal Opportunity
- Accelsius 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.