BillionToOne·Union City, California
Perform clinical laboratory assays and quality control studies to provide data for disease diagnosis and prevention. Contribute to R&D to CLIA tech transfer, troubleshooting, and validations.
A rare opportunity to shape the future of genomics
Join a team of brilliant, passionate innovators determined to transform healthcare. At BillionToOne, we've built a category-defining, publicly traded company on Nasdaq where transparency fuels trust, collaboration drives breakthroughs, and every contribution moves the needle on our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we build products that are 10x better than anything that exists today.
Our scientists, engineers, sales executives, and visionaries are united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion, and every innovation you contribute helps remove the fear of the unknown from some of life's most critical medical moments.
If you're driven by purpose, energized by innovation, and ready to help shape the future of precision medicine at scale, this is where you belong.
We are looking for driven Clinical Laboratory Scientists (with California Clinical Laboratory Scientist License) to perform UNITY, the only non-invasive prenatal test (NIPT) that can detect inherited disorders such as sickle cell disease, spinal muscular atrophy, and cystic fibrosis in the baby directly from maternal blood. These disorders are extremely severe, but early detection and intervention can significantly improve outcomes. You will join our growing superstar CLIA team responsible for end-to-end processing of pregnancy blood samples in a high complexity, high-growth CLIA setting. The Clinical Laboratory Scientist is an onsite position.
At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.).
For this position, we offer a total compensation package of up to $200,536 per year, including an hourly rate (inclusive of shift differential) of $59.14 - $86.97 per hour. Compensation is commensurate with experience and leveling.
BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
For more information about how we protect your information, we encourage you to review our Privacy Policy [https://billiontoone.com/privacy-policy/].
BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA,a breakthrough that has already transformed the lives of over half a million patients worldwide.
Unity Complete™ [https://www.unityscreen.com/] is the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. Unity Confirm™ [https://www.unityscreen.com/webinars/confirm-gc] enables non-invasive confirmation for high-risk screening results through the capture of intact circulating fetal cells using BillionToOne’s Fetal Cell Capture™ Technology. Our Northstar® [https://www.northstaronc.com/] liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care.
From $0 to $400M+ annualized revenue run-rate in just 6 years. In 2025, we completed one of the most successful IPOs for a medical diagnostics company, building on nearly $400M in private funding,including our $130M Series D in 2024 and backed by world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest.
Forbes named us one of America's Best Startup Employers for 2025 and we're Great Place to Work certified, with 100% of our people willing to go the extra mile, even as we've scaled to over 700 employees.
Headquartered in Menlo Park with facilities in Union City, CA, and a new lab opening in Austin, TX in 2027, we're continuing to push the boundaries of what's possible in molecular diagnostics. We're just getting started.
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Ready to help us change the world, one molecule at a time? Learn more at billiontoone.com [https://www.billiontoone.com]
Requires a Bachelor's degree in chemical, physical, or biological sciences and a current California Clinical Laboratory Scientist License. Candidates need 1-2 years of clinical experience and hands-on expertise in manual molecular biology protocols.
Market context
California prenatal Clinical Laboratory Scientist roles are typically driven by steady demand for experienced lab professionals who can support molecular testing in reproductive and prenatal care settings. These positions are competitive because employers often look for a bachelor’s degree, a current California Clinical Laboratory Scientist License, 1-2 years of clinical experience, and manual molecular biology skills. Review the AI-summarized requirements and benefits here to save time, then confirm your license status and highlight any hands-on molecular workflow experience in your application.