Electrical Engineer / Applied Physicist

Until; San Francisco (CA); On-site; USD 140,000 - 230,000; Full time

Job summary

Until is seeking fast-moving engineers and physicists to tackle the rewarming challenge in cryopreservation. You will help build electrical systems to deliver high power into complex biological loads, derive back-of-the-envelope models from circuit laws, electromagnetics, and thermal physics, and prototype hardware in the lab.

You will join an interdisciplinary team turning a moonshot into practical devices, operating with autonomy and a hands-on approach to hard problems that feel impossible

Qualifications

• Strong fundamentals in circuit theory, electromagnetics, and thermal physics.
• Experience deriving quick analytical models from physical laws.
• Hands-on hardware prototyping in lab environments.

Skills

Circuit theory

Electromagnetics

Thermal physics

Hardware prototyping

Job description

About the Company

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 the Role

One of the key unsolved challenges in cryopreservation is the rewarming problem: how do we rapidly and uniformly rewarm whole organs and, ultimately, whole bodies to restart cryopreserved biology? One of the key ingredients is building first-of-its-kind electrical systems for delivering high power into complex biological loads. We are looking for fast-moving, hands-on engineers and physicists with strong fundamentals, high autonomy, and a desire to build technology that feels impossible until it works. This role is for someone who is as comfortable deriving a back-of-the-envelope model from circuit laws, electromagnetics, and thermal physics as they are wiring up hardware in the lab.