Clinical Laboratory Scientist (CLS), Oncology

BillionToOne•Menlo Park, CA

17d•$156,194•Onsite

About The Position

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary—a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries 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—every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong. We are looking for a driven Clinical Laboratory Scientist (with California Clinical Laboratory Scientist License) to perform Northstar. You will join our growing superstar CLIA team responsible for end-to-end processing of cancer blood samples in a high complexity, high-growth CLIA setting. The Clinical Laboratory Scientist is an onsite position. Shift Hours: Tuesday - Saturday, 7:00 AM - 3:30 PM or Sunday - Thursday, 7 AM - 3:30 PM

Requirements

Bachelor's degree in the chemical, physical or biological sciences
1-2 years of CLS experience in a clinical setting
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 and PCR
Advanced knowledge of Google Docs, Word, Excel, basic statistics and familiarity with LIMS systems
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

Start-up experience
Knowledge of cancer biology
Experience in a cell-free DNA setting

Responsibilities

Performs clinical laboratory assays to provide data for diagnosis, treatment, and prevention of disease
Performs quality control studies to ensure the accuracy of clinical data
Verifies instrument performance by checking and calibrating specific lab instruments and documents data
Organizes and contributes to R&D to CLIA tech transfer and troubleshooting, training, and validations

Benefits

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 new parents (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)
Free 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)
For this position, we offer a total compensation package of up to $156,194 per year, including an hourly rate of $59.14 - $67.29 per hour.