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Open nowPosted 20 hours ago

Engineer, Rewarming Systems

Until12 open roles

Pay
$120,000 – $145,000 a year
Where
Bay Area
Work mode
On site
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Your applicationOpen nowEngineer, Rewarming SystemsUntil · Bay Area

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The clock on this job

Early applications get read.

11.5% of postings close within 7 days. Measured by our own scanner across the market. Until postings stay open a median of 51 days.

Share of postings closed within
  1. 2.0%1 day
  2. 4.3%3 days
  3. 11.5%7 days
  4. 18.1%14 days
  5. 35.6%30 days
  6. 44.6%60 days
This job: posted 20 hours ago

Until median: 51 days open

The posting

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

What You'd Do

  • Design, build, and operate the hardware and software linking the rewarming system and the organ: holders, fluidic circuits, sensing, control, and data acquisition.
  • Run experiments on holder designs and rewarming protocols alongside the organ and cryobiology teams.
  • Reason from first principles, using electromagnetics, heat transfer, imaging and measurement data, to model nanoparticle distribution and heating uniformity, then refine hardware and protocols.
  • Develop sensing, control, interlock, and logging software for field profiles and temperature feedback.
  • Learn quickly, take ownership of ambiguous problems, and contribute across the full rewarming hardware stack.

About You

  • 3+ years of hands-on engineering experience (student teams count), and a project you can walk us through in depth: the reasoning and where your first model was wrong.
  • Strong command of electromagnetics, heat transfer, and fluid dynamics.
  • Mechanical design and fabrication experience (CAD, rapid prototyping, 3D printing, etc.).
  • Circuit design experience from protoboard to PCB, plus building and debugging sensors, data acquisition, and control systems.
  • Proficient in object-oriented programming in Python and/or C++.
  • Eager to work closely with biologists (no biology background required).
  • Desire to join a small, fast-paced team on an excellent adventure.

As an equal opportunity employer, Until is committed to providing employment opportunities to all individuals. All applicants for positions at Until will be treated without regard to race, color, ethnicity, religion, sex, gender, gender identity and expression, sexual orientation, national origin, disability, age, marital status, veteran status, pregnancy, or any other basis prohibited by applicable law.

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