General Supervisor, Prenatal

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 a driven General Supervisor   (with California Clinical Laboratory Scientist License) to support 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 lead and oversee our growing superstar CLIA team responsible for pregnancy blood sample processing in a high complexity, high-growth CLIA setting. The General Supervisor is an onsite position and reports to the Director of Laboratory Operations.

Shift Hours: Mon-Fri PM 

• Weekday PM, 20% differential

Responsibilities:

• Lead clinical laboratory daily supervision in alignment with company values and mission
• Hold General Supervisor delegation and responsibilities including oversight and support of day-to-day operations (Pre-analytical and Analytical), scheduling, and troubleshooting
• Manage CLIA direct reports including licensed and/or unlicensed staff (CLS, Clinical Laboratory Assistants)
• Oversee continuous process improvement projects including reagent quality control, tech transfer, troubleshooting, training, and validations
• Facilitate communication between laboratory teams and other departments or stakeholders
• Participate in recruiting efforts and hiring to meet sample volume demands
• Foster a collaborative team environment for continuous growth and building skillsets
• Partial owner of and leading execution of company objectives and key results

Requirements:

• Bachelor's degree in the chemical, physical or biological sciences
• Current or previous supervisory experience that includes direct supervision of lab staff
• Minimum of 4-5 years of CLS experience in a clinical setting (molecular and/or high-complexity laboratory experience preferred)
• A current California Clinical Laboratory Scientist License that meets requirements for Testing Personnel under CLIA regulations (42 CFR, part 493) (ASCP, CGMBS or generalist license is required)
• Hands-on training and experience with manual molecular biology protocols, including DNA extraction, PCR, and automated liquid handlers
• Advanced knowledge of Google Docs, Word, Excel, basic statistics and familiarity with LIMS systems and Next-Generation Sequencing
• Excellent leadership, communication, and interpersonal skills
• Strong attention to detail and ability to work flexibly and well under given timeframes
• Self-starter and dynamic team player with excellent verbal and written skills

Nice-To-Haves:

• Previous CLIA General Supervisor experience
• Start-up experience
• Knowledge of medical genetics
• Experience in a cell-free DNA setting

Benefits And Perks:

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• Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients
• Open, transparent culture that includes weekly Town Hall meetings
• The ability to indirectly or directly change the lives of hundreds of thousands patients
• Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80%
• Extremely generous Family Bonding Leave for eligible employees (16 weeks, paid at 100%)
• Supplemental fertility benefits coverage 
• Retirement savings program including a 4% Company match
• Increase paid time off with increased tenure
• Latest and greatest hardware (laptop, lab equipment, facilities)
• Daily on-site lunches provided from top eateries
• A variety of perks on campus (state of the art gym, restaurant)
• Free on-site EV charging (compatible with all EVs, including Tesla)

"}" data-sheets-userformat="{"2":769,"3":{"1":0},"11":4,"12":0}">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 $263,772 per year, including a base pay range (inclusive of shift differential) of $192,932- $218,657 per year.

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.

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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.

Our Impact

Unity Complete™ 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™ 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® liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care.

Our Growth

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.

Our Recognition

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.

Our Future

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.

Ready to help us change the world, one molecule at a time? Learn more at billiontoone.com