Scientist I Senior Scientist - Microscopy

About This Role

Until is a moonshot company building reversible cryopreservation technology. We develop perfusion systems, cryoprotectant formulations, controlled-rate freezers, and vitrification and rewarming protocols for human tissue.

Our focus today is organ-scale reversible cryopreservation: preserving donated organs at cryogenic temperatures without ice formation, then rewarming them uniformly for transplant. By solving this time-critical challenge, we’re laying the foundation for whole-body reversible cryopreservation — pausing molecular motion to give patients a bridge to future cures.

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. We are building out our medical hibernation team to tackle the challenge of whole-body cryopreservation beginning in rodent models.

About the Role

We are seeking a Scientist/Senior Scientist in Microscopy to design, build, and optimize advanced optical imaging systems that enable high-resolution visualization of biological structure and function. This role is central to our efforts to image cellular dynamics, tissue organization, and whole-organ structure.

The ideal candidate is a hands-on experimentalist with deep expertise in optical microscopy design and functional imaging. You’ve built or customized systems such as two-photon microscopes or wide-field calcium or voltage imaging setups, and you thrive at the intersection of optics, biology, and engineering.

Key Responsibilities

Design and construct custom optical microscopes and imaging platforms tailored to functional imaging, histology, and organ-scale analysis.

Design and program embedded electronic devices for measurement and control of imaging system.

Work with molecular biologists, materials scientists, and organ engineers to design experiments that leverage advanced imaging for discovery and diagnostics.

Develop imaging pipelines for histological validation, functional assays, and organ-scale structural analysis.

Analyze data to quantify biological structure and function and contribute to experimental interpretation.

Contribute to the development of novel imaging methodologies and share best practices across disciplines.

Stay current on emerging optical technologies and evaluate their relevance to Until’s goals.

Qualifications

PhD in Physics, Optical Engineering, Chemical Engineering, Neuroscience, or related field (or equivalent hands-on experience).

Proven experience building or customizing advanced microscopes, particularly two-photon or wide-field imaging systems.

Strong foundation in optics, system integration, and control software.

Demonstrated ability to apply custom imaging systems to biological or physiological samples.

Proficiency with imaging control and analysis tools (e.g., ScanImage, Micro-Manager, LabVIEW, MATLAB, or Python).

Preferred

Experience with functional imaging of calcium or voltage dynamics.

Familiarity with live or perfused tissue imaging.

Track record of developing imaging systems that transition from prototype to routine experimental use.

Experience with FPGA programming in VHDL.

Publication record in optical microscopy or functional imaging.

Benefits

A mission-driven environment tackling one of the hardest problems in medicine.

The opportunity to build and direct a world-class imaging program from the ground up.

A deeply interdisciplinary team of scientists, engineers, and builders.

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

Subsidized lunch daily

Ready to Apply?

Join our team and be part of the future of medicine and technology.

Apply for Scientist I Senior Scientist - Microscopy