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Software Engineer

Until LabsOrgan Cryopreservation company
On-site
Founders Fund logo
Founders Fund
Lux Capital logo
Lux Capital
Field Ventures
Age 1
Day One Ventures

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 time-critical challenge, we’re laying the foundation for medical hibernation: pausing molecular motion to give patients a bridge to future cures.
  • To achieve our goal, we are assembling an interdisciplinary team to develop perfusion systems, cryoprotectant formulations, controlled-rate freezers, and vitrification and rewarming protocols for human tissue.
  • We are also building out our medical hibernation team to tackle the challenges of whole-body cryopreservation, beginning with rodent models.
  • 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 As a Software Engineer at Until, you’ll build the computational and infrastructure backbone that enables our science to move faster.
  • You’ll design and implement data pipelines, lab automation interfaces, and cloud-based systems that scale with our experiments.
  • You will own projects end-to-end, collaborate across disciplines, and set a high bar for developing code that scales with the team.
  • About You Degree in Computer Science or a related field (Applied Mathematics, Statistics, Data Science).
  • Demonstrated ability to write modular, maintainable, and performant code in Python.
  • Strong understanding of computer science fundamentals, including algorithms, operating systems, and concurrency.
  • Prior experience with backend development using frameworks such as Flask, FastAPI, or Django.
  • Experience working with relational databases such as PostgreSQL, including schema design and query optimization.
  • Experience with cloud infrastructure (AWS, GCP) and distributed systems.
  • Proficient with developer tooling, including Linux command line, Git, and shell scripting.
  • Ability to think from first principles and tackle complex, cross-disciplinary problems with other scientists and engineers.
  • Track record of owning software projects end-to-end, from defining requirements to driving implementation and deployment.
  • Preferred Qualifications 3+ years of relevant professional experience, or a graduate degree.
  • Understanding of cloud security best practices, including identity and access management, data encryption, and network security.
  • Experience with Infrastructure as Code tools such as Terraform or Pulumi.