Executive Assistant

About X-Therma:

Engineering the Future of Regenerative Medicine

At X-Therma, we are not just extending shelf life; we are removing time from the equation of human health. X-Therma is a commercial-stage, venture-backed biotech company pioneering the future of regenerative medicine. Headquartered in the San Francisco Bay Area, with a 20,000sqt cGMP facility and a subsidiary in Austria, we operate as a global team advancing next-generation biopreservation solutions.

Featured by Nature Biotechnology as an industry trailblazer, X-Therma is redefining biopreservation. Inspired by the molecular adaptations of arctic species, our breakthrough platform overcomes the damaging effects of ice with a first-in-class, DMSO-free, non-toxic, and chemically defined antifreeze technology. By enabling the safe preservation of living biological materials, we are transforming living medicines into on-demand therapies and unlocking the full potential of regenerative medicine.

Why Your Work Here Matters

The current “cold chain” is broken. With 80% of transplantable organs going unused and advanced cell therapies struggling with the toxicities of traditional cryopreservatives, the field of regenerative medicine has hit a ceiling. We are here to shatter it. Our technology empowers clinicians and researchers to transport and store biological material—from kidneys to CAR-T cells—at subzero temperatures without the structural damage of ice or the cellular stress of harsh chemicals. By joining us, you are helping dismantle the barriers of distance and time to ensure that life-saving therapies reach every patient who needs them.

A Legacy of Innovation and Achievement

We are a high-growth, mission-driven team that has consistently turned “theoretical” science into “world-first” milestones supported by premier partners including DOD, CIRM, NSF, Lawrence Berkely National Labs, and Johns Hopkins:

• FDA Breakthrough Designation Our XT-ViVo® and TimeSeal® platform earned the prestigious FDA Breakthrough Device Designation, recognizing its potential to revolutionize kidney preservation.
• Historic Transatlantic Transports In 2024, we achieved the world’s first subzero organ transports, successfully moving kidneys across the Atlantic for 48 hours—a feat previously thought impossible.
• Moving Beyond DMSO We are leading the industry shift toward safer standards with XT-Thrive, our cGMP-grade, DMSO-free cryopreservation media that maintains superior cell potency and viability.
• Fresh Off The Shelf Biologics XT-Novo® + TimeSeal® Tissue is a DMSO-free, chemically defined platform solution that preserves cells, tissues, and organ constructs at -5°C in an ice-free state for multiple days.
• Global Recognition From showcasing our tech at Hopkins on the Hill to being featured in Fast Company’s World Changing Ideas, our work is validated by the highest echelons of science and innovation.

The Role

We are seeking an exceptional Executive Assistant / Senior Executive Assistant to support a fast-moving leadership team and help scale company operations. This is a high-impact role with a direct contribution to X-Therma’s mission of transforming regenerative medicine and ultimately helping save millions of lives. Beyond traditional executive support, you will serve as a trusted partner to leadership, driving execution across operations, events, finance coordination, HR processes, and quality systems. You will be a central hub of execution, ensuring priorities stay on track, teams remain aligned, and critical initiatives move forward. The ideal candidate is operationally pristine, highly organized, positive, and personable, with exceptional emotional intelligence and a genuine passion for supporting others. You anticipate needs before they arise, solve problems proactively, and take pride in helping leaders stay effective, whether coordinating complex business priorities or occasionally assisting with personal matters that enable them to focus on the company’s mission. As a highly visible ambassador of X-Therma’s culture, you will embody our core values of Perseverance, Respect, Support, Dreamer, Excellence, and Integrity while helping build an environment where people can do the best work of their careers.

Key Responsibilities

Leadership Support

• Serve as a force multiplier for leadership by managing calendars, scheduling, and key company rhythms
• Orchestrate complex travel logistics, …