# Mechanical Engineer, Fluidics/Perfusion at until

- Company: until
- What the company does: Until is building a pause button for biology, so every single transplantable organ finds a recipient and saves a life. Backed by Founders Fund and Lux.
- Company website: https://www.untillabs.com
- Type: Startups
- Level: Mid level
- Location: Bay Area
- Work setup: On-site
- Pay: $120K to $200K base salary per year (USD)
- Posted: 2025-08-13
- Apply by: 2026-10-08
- Apply: https://jobs.lever.co/until/261733ff-53a5-4250-8e8d-3eeef5167f06
- Page: https://www.1752.vc/careers/jobs/until-mechanical-engineer-fluidics-perfusion/

## About the role

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.

## What they're looking for

- 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

Tags: Engineering