Ideas and Impact Over Hierarchy
Join a team of pioneers driven by a mission to transform millions of lives. We solve global health problems by starting at the limits of physics, creating new ways to measure health more precisely.
Stars in Every Position
We believe that being a good company is a worthy end in itself. And, so that is what we are constantly building: a place where we are all surrounded by curious and kind co-workers. We are building a company where everyone can feel empowered to make impactful decisions - and we strive to be a place where great work is rewarded.
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We Nurture Next-Level Growth
Our culture is built on an agreement to continually challenge the norms and limits that support the status quo. Our mission and vision demand constant growth and development from everyone in every role on the team. In order for that kind of breakthrough progression to occur, we are committed to providing an environment that supports our people during limit-breaking growth, providing the kind of support you need to become your best.
Game-Changing Work
Our single-molecule counting platform detects disease with unprecedented precision. Every person, in every role, helps bring this breakthrough technology into the hands of those who need it most.
Generous Benefits
We believe great work starts with taking care of our people. We offer competitive pay, meaningful equity, and a retirement plan with company matching.
Additionally, employees enjoy comprehensive medical, dental, and vision coverage, generous paid leave and the tools and flexibility to do their best work.
Supporting the People Who Support You
We believe that supporting family means supporting the whole person. New parents receive up to four months of fully paid leave to bond, rest, and begin life’s next chapter. Because time with family isn’t time away from purpose — it’s part of what makes great work possible.
Everyday Convenience & Community
Enjoy the ease of a fully stocked kitchen and daily catered lunches from local favorites. Take a break with friends over ping pong or coffee. Recharge your EV on-site and stay balanced with access to fitness perks and wellness programs that keep our community thriving.
Inclusive, Open, and Real
We value ideas over titles and clarity over politics. Transparency is built into how we work — from open discussions and weekly all-hands to shared ownership of goals. Diverse perspectives aren’t a checkbox here; they’re the engine that drives discovery and progress.
Tools, Tech & Spaces That Inspire
At BillionToOne, innovation happens everywhere — from our state-of-the-art labs to our collaborative creative spaces. We equip every employee, on-site or remote, with cutting-edge tools and technology designed to amplify creativity, precision, and impact.
Discover our in-office perks.
Hear It From Others
We are fortunate to have employees from all over the world and from the most prestigious universities. Many employees have been with us since the very early days. They all come to be a part of something special. We are grateful they come, they stay, and they thrive.
"UNITY Complete® allows our sales professionals to offer a product that is truly different from anything an OB/GYN has seen within the prenatal genetics space within the last 10 years. It's refreshing to provide solutions to common hindrances within the OB/GYN practice, and it's been exciting to see the reaction of customers who have needed improvement within this space respond with a sense of increased knowledge and understanding of each individual pregnancy they manage."
"We have a very strong culture of cross-departmental teamwork. Everyone here cares about making an impact!"
"I love being able to introduce the latest and greatest technology to Women’s Health providers that will improve their knowledge on each pregnancy, remove barriers, and give babies the best shot at healthy beginnings!"
"Knowledge and skills are highly valued by the Company."
Explore Our On-Site Perks
Find yourself in a place and with the people that help you grow and evolve, and transform healthcare, too.
BTO CGMBS Training Program
At BillionToOne, we offer an internal one-year Post-Baccalaureate Training Program designed to help you become a Clinical Genetic Molecular Biologist Scientist (CGMBS).
35 hours/week of hands-on experience in our cutting-edge oncology and prenatal labs
5 hours/week of didactic training to support your practical work and prepare for the ASCP certification examination
California Department of Public Health (CDPH) approved program
Prepares you for a career as a CGMBS
This program is your gateway to an exciting career as a CGMBS. Gain the skills, knowledge, and certification needed to succeed in this growing field.
Want to learn more?
Please email for more information about the program: cgmbs-trainingprogram@billiontoone.com