---
title: "Sr. Mechanical Engineer… at Until – San Francisco, CA"
canonical: "https://www.metaintro.com/job/sr-mechanical-engineer-fluidics-perfusion-at-until-0557cdf3-0ebf-5a7f-bddb-3a47e78270c9"
language: "en"
author: "Metaintro"
---

[/company/until](/company/until)[Until](/company/until)
# Sr. Mechanical Engineer, Fluidics/Perfusion at Until

Compensation

$150,000 – $210,000/yr

**Setup**
: On-site

**Location**
: San Francisco, California

**Type**
: Full-time

**Level**
: mid

**Posted**
: Aug 13, 2025

## Description

Until is hiring a Mechanical Engineer to develop heat- and mass-transfer systems for N-of-1 perfusion and heat-exchange devices supporting organ-scale reversible cryopreservation. The role involves electromechanical design and fabrication, control software, physical modeling, and full-stack engineering, with a preference for organ-perfusion experience and startup experience. Benefits include medical, dental, and vision insurance, equity, retirement savings, paid time off, and subsidized lunch.

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