Electrical Engineer

Until; San Francisco (CA); On-site; USD 120,000 - 130,000; Full time

Benefits offered by this job

Medical, dental & vision insurance

Flexible time off

Salary + equity

401(k) retirement plan

FSA & commuter benefits

Lunch provided

Monthly learning stipend

On-site fitness center

Team social budget

Job summary

Until is a moonshot company building a pause button for biology. We design and develop organ-scale cryopreservation solutions and rewarming hardware.

You will join a fast‑paced team of electrical engineers and physicists driving early advances in high‑power rewarming systems. As an electrical engineer, you will design, test, and iterate analog and digital circuits, power converters, and control architectures while building robust hardware test setups.

Qualifications

• Strong fundamentals in physics and electrical engineering.
• Experience designing, building and debugging both analog and digital circuitry.
• Experience with basic control systems and mechanical design.
• Demonstrations of exceptional ability and autonomy in past work.
• Desire to join a small, fast paced team on an excellent adventure.

Responsibilities

• Design, build, test, and debug electrical hardware for organ rewarming systems.
• Develop power converters, resonant matching networks, instrumentation and control systems.
• Build test fixtures, data acquisition systems, experimental setups and control software for high‑power hardware validation.
• Learn quickly, take ownership of ambiguous problems, and contribute across the full rewarming hardware stack.

Skills

Analog & Digital circuitry

Electrical engineering fundamentals

Control systems

Mechanical design

Autonomy & initiative

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. Doing so requires a fast‑paced, scrappy team of electrical engineers and physicists who want to make technology indistinguishable from magic.

What You'd Do

• Design, build, test, and debug electrical hardware for organ rewarming systems.
• Develop power converters, resonant matching networks, instrumentation and control systems.
• Build test fixtures, data acquisition systems, experimental setups and control software for high‑power hardware validation.
• Learn quickly, take ownership of ambiguous problems, and contribute across the full rewarming hardware stack.

About You

• Strong fundamentals in physics and electrical engineering.
• Experience designing, building and debugging both analog and digital circuitry.
• Experience with basic control systems and mechanical design.
• Demonstrations of exceptional ability and autonomy in past work.
• Desire to join a small, fast paced team on an excellent adventure.

Benefits

• Generous medical, dental and vision insurance coverage
• 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
• Daily lunch and dinners, plus a variety of snacks
• Monthly learning stipend
• On‑site fitness center
• Quarterly team social budget

$120,000 - $130,000 a year