Apply on Employer Site

Until · 2 months ago

Senior Cryogenic Systems Engineer

San Francisco, CA

Full-time

Onsite

Mid, Senior Level

$140K/yr - $175K/yr

3+ years exp

Until is a moonshot company focused on organ-scale reversible cryopreservation. The Cryogenic Process & Systems Engineer will lead the design and execution of high-pressure cryogenic fluid systems to support perfusion and rewarming hardware, collaborating with an interdisciplinary team to innovate in cryogenic processing.

BiotechnologyLife Science

Responsibilities

Design, build, and validate cryogenic fluid systems including high-pressure piping, pumps/compressors, valves, manifolds, instrumentation, and insulation

Create and maintain process documentation (PFDs, P&IDs), system architecture drawings, and simulation/analysis of thermal/fluid/structural performance

Size and select cryogenic and high-pressure equipment, coordinate integration, commissioning, and test of prototypes

Perform analyses of pressure drop, NPSH, fluid/thermal behavior, material embrittlement, heat in-leak, and boil-off dynamics

Lead safety architecture for cryogenic systems: relief/vent systems, purging strategies, instrumentation, code compliance (ASME/API/NFPA/CGA)

Develop and run hardware test rigs, collect data, investigate failures, iterate rapidly

Collaborate with cross-functional teams (mechanical, thermal, materials, biology) to integrate cryogenic hardware into larger systems

Qualification

Cryogenic fluid systemsHigh-pressure pipingFluid mechanicsThermodynamicsHeat-transferMaterial behaviorProcess simulation toolsPrototype developmentCollaborationProblem-solving

Required

Bachelor's degree in Mechanical, Chemical, Petroleum or related Engineering discipline

At least 3 years of experience working in one or more of these areas: LNG/liquid-gas processing, cryogenic fluids (LN₂/LNG/LOX/LH₂), or high-pressure industrial gas systems

Hands-on experience with high-pressure piping, rotating equipment (pumps/compressors), valves and instrumentation in cryogenic or industrial-gas contexts

Strong foundation in fluid mechanics, thermodynamics, heat-transfer, material behavior at low temperature / high pressure

Comfortable working in a hardware lab environment with prototype development and test