---
title: 'Veterinarian/Anesthesiologist at Until'
canonical: 'https://feeny.ai/job/veterinarian-anesthesiologist-until-san-francisco-jmezz5c9n59y'
type: 'job'
last_seen: '2026-11-02'
---

# Veterinarian/Anesthesiologist at Until

- **Company:** Until
- **Location:** San Francisco, CA
- **Compensation:** $150k–$215k
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-10-21
- **Last confirmed live:** 2026-11-02
- **Apply:** https://jobs.lever.co/until/f34d25d0-946a-4198-8047-4171cada8bad

## 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 the Role

We're seeking a veterinarian with deep large-animal anesthesia experience to lead clinical care in our large animal vivarium. You'll be the founding veterinary lead of a small team that runs day-to-day vivarium operations. The team supports our organ preservation program, which is mostly organ procurement and perfusion studies plus survival surgeries. You'll own anesthesia and animal welfare across every procedure, and you'll help build the facility's SOPs, training program, and regulatory compliance from the ground up.

This role sits at the intersection of veterinary medicine and a fast-moving research program. The anesthesia you deliver directly shapes organ quality at procurement and pace of scientific progress.

## What You'd Do

- Plan and deliver general anesthesia for large animal models undergoing organ procurement, long-duration perfusion procedures, and survival surgeries. This includes induction, intubation, mechanical ventilation, hemodynamic monitoring, and fluid and pharmacological support.

- Provide clinical veterinary oversight for all research animals: health assessments on arrival, quarantine and acclimation, preventive care, and diagnosis and treatment of illness.

- Direct post-operative care, analgesia, and welfare monitoring for survival surgery animals, and write the monitoring plans the vet techs carry out.

- Help build the vivarium, including SOPs, anesthesia and surgical protocols, occupational health and biosecurity practices, and staff training and competency records.

- Work with the IACUC on protocol design, amendments, and inspections, and keep the program compliant with USDA Animal Welfare Act and PHS/OLAW requirements.

- Uphold the highest standards of animal welfare, ensuring that veterinary care, perioperative management, and monitoring practices reflect current veterinary standards and ethical research principles.

- Supervise and mentor the vet tech and animal care team, and oversee OR scheduling, animal ordering, drug inventory (including controlled substances and DEA records), and equipment purchasing.

- Work with scientists and engineers to refine procurement physiology (warm ischemia, heparinization, perfusion cannulation timing) to improve organ outcomes.

## About You

- DVM/VMD (or equivalent), licensed or eligible for licensure in California.

- Substantial hands-on experience with large animal welfare and anesthesia, ideally in a research or surgical setting. Porcine experience is strongly preferred.

- Experience with ventilated anesthesia, arterial and central line monitoring, and managing hemodynamically complex patients through long procedures.

- Familiarity with IACUC processes and USDA/OLAW regulations. DACLAM, DACVAA, or equivalent residency training is a strong plus.

- Experience setting up or managing an animal facility, or supervising technical staff, is a plus.

- You thrive in a startup environment, take ownership, and care about both animal welfare and scientific rigor.

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.

## About Until

## Company Overview
- **One-liner**: Until is building reversible cryopreservation technology to bank whole human organs, extending viability from hours to weeks or months, with the long-term goal of whole-body cryopreservation.
- **Entity Type**: Private (Privately Held)
- **Headquarters**: San Francisco, California, United States
- **Founded**: 2025
- **Founders**: Laura Deming (CEO, Co-founder) and Hunter Davis Ozawa (CSO, Co-founder)

## Core Business
- Primary industry/industries: Biotechnology Research, Cryopreservation, Organ Preservation, Hibernation Science
- Target customers: Organ procurement organizations, transplant hospitals, and ultimately patients waiting for organ transplants (B2B with healthcare institutions)
- Mission or purpose statement: "Pressing pause on biological time, for those who need it most." The company aims to solve the organ procurement and matching problem by making donated organs last long enough to reach any patient in need.

## Products & Services
- **Reversible Cryopreservation for Whole Organs**: A technology that cools organs to -130°C using biocompatible cryoprotectants, then rewarms them without damage, turning hours of viability into weeks or months.
- **Cryoprotectant Discovery Engine**: A platform combining physics simulations and machine learning to screen over 250,000 candidate molecules for cryoprotective formulations that stay within a "Biocompatibility Budget" – preventing ice formation without harming cells.
- **Hibernation Research**: Exploratory work on inducing reversible metabolic arrest (hibernation-like states) in organisms, with potential applications in organ preservation and future whole-body suspension.

## Market Standing
- **Valuation/Market Cap**: Not publicly available (private company, founded 2025)
- **Key Metric**: Total Funding – Not disclosed; headcount of 53 employees (as of early 2026) with 9.5% monthly growth and 29 active job postings.
- **Notable Investors/Partners**: Not publicly listed. The company is co-founded by Laura Deming, a noted longevity and biotech investor (founder of the Longevity Fund), which may signal strong investor connections.
- **Growth Signals**: Rapid hiring (29 open roles for a 53-person team, +31.8% quarterly job posting growth), high-throughput screening scale (2,903 formulations tested in Q2 2026 alone), and public progress on cryoprotectant discovery.

## Competitive Advantages
- **Combination of Physics Simulation and ML**: Their discovery engine screens millions of molecules in silico before wet-lab validation, dramatically accelerating cryoprotectant development.
- **Biocompatibility Budget Framework**: A novel approach that distributes cryoprotectant toxicity across multiple mechanisms, avoiding the single-dose toxicity that has stymied the field for 50 years.
- **Focus on Whole Organs (not just cells)**: Extending cryopreservation from small samples (IVF, stem cells) to whole human organs – a much harder problem with massive clinical impact.
- **Talent Philosophy**: "Proof of work" culture that hires for demonstrated ability over credentials, with fast promotion for those who earn it.

## Strategic Focus
- **Immediate**: Scale up cryoprotectant discovery and validation to achieve reversible cryopreservation of a whole human organ (likely a kidney or heart) within the next few years.
- **Medium-term**: De-risk and build the foundation for whole-body reversible cryopreservation, enabling "a bridge to future cures" for patients with currently incurable conditions.
- **Talent Acquisition**: Aggressively hiring scientists, engineers, and operations staff across physics, biology, chemistry, and engineering disciplines to accelerate R&D.

## Why Work Here
- **Work Environment**: On-site in San Francisco (HQ). The work spans "the edge of physics, biology, and engineering" – from quantum-level simulations to handling real organs. Culture emphasizes "hard problems", rigor, and speed.
- **Culture**: Flat hierarchy, promotion on merit, "proof of work" over credentials. Team includes people from top universities and self-taught scientists alike.
- **Benefits**: Comprehensive medical/dental/vision, 401(k) via Guideline, unlimited PTO, paid parental and disability leave, on-site fitness center, catered lunch and dinner, plus snacks.
- **Engineering & Science**: Opportunity to work on cutting-edge cryobiology, nanotech, polymer chemistry, and high-throughput automation. The company uses AI tools in hiring but makes final human decisions.

## Sources
1. [untillabs.com/careers](https://www.untillabs.com/careers)
2. [untillabs.com](https://untillabs.com/)
3. [untillabs.com/our-team](https://www.untillabs.com/our-team)
4. [builtin.com/company/until-labs](https://builtin.com/company/until-labs)
5. [jobs.lever.co/until](https://jobs.lever.co/until)

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- [Engineer, Rewarming Systems](https://feeny.ai/job/engineer-rewarming-systems-until-san-francisco-tswax2n4d0ca) — San Francisco, CA
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