Mechanical Engineer, Fluidics/Perfusion
Until
Apply to this job Bay Area on site Until 8/22/2026 First posted March 18, 2026 Last posted March 18, 2026
Job description
Until is a moonshot company building a “pause button” for biology. Our near-term focus is organ-scale reversible cryopreservation: preserving donated organs at subzero temperatures without ice formation, then rewarming them uniformly for transplant. By solving this grand challenge, we’re laying the foundation for whole-body reversible cryopreservation, giving patients a bridge to future cures.
To achieve our goal, we are assembling an interdisciplinary team to develop perfusion systems, cryoprotectant formulations, and vitrification and rewarming hardware.
We envision a future where no transplantable organ is lost to logistics, and no terminal diagnosis is final because patients can safely wait for future medicine to arrive.
About You
- Track record of exceptional engineering abilities
- Deep understanding of heat and mass transfer principles
- Experience designing fluidic systems for perfusion/heat exchangers
- High degree of autonomy across full engineering stack: electromechanical design and fabrication, control software, physical modeling
- Desire to join a fast-paced, scrappy engineering team
Preferred Qualifications
- 3+ years experience/graduate level in Mechanical Engineering, Physics, or equivalent
- Experience with organ perfusion in a research or clinical context
- Experience working in a startup
Benefits
- Opportunity for outsized impact creating the future as an early team member
- Generous medical, dental and vision insurance coverage for employees and their dependents
- Flexible time off and paid holidays
- Competitive compensation package, including salary and equity
- Access to a 401(k) retirement savings plan
- FSA and commuter benefits
- Subsidized lunch daily
Compensation (from employer):
120000–200000 USD per year
About this role
Summary
Designs fluidic systems for organ perfusion and cryopreservation hardware.
Job title
Mechanical Engineer, Fluidics/Perfusion
Experience level
3+ years
Industry
biotechnology
Location requirements
Bay Area, no remote work
Salary
120000–200000 USD per year
Management role
No
Skills & keywords
Required skills
heat transferfluidic systemselectromechanical designcontrol softwarephysical modeling
Preferred skills
organ perfusionstartup experiencephysics
Specializations
fluidic systemsheat transfermass transferperfusioncryopreservation
Locations
Structured locations inferred from the posting.
Unknown location
On-site
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