Clinical Laboratory Associate (CLA), Prenatal and Oncology

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.

• Perform specimen receipt and accessioning according to the laboratory’s standard operating procedures
• Perform isolation procedures according to the laboratory’s standard operating procedures to CLA responsibilities
• Maintain equipment according to the laboratory’s standard operating procedures
• Clean labware, equipment, and benches
• Prepare documents and binders for equipment and personnel records
• Document all corrective actions taken when test systems deviate from the established performance specifications
• Perform and document routine preventative maintenance
• Prepare reagents required for laboratory preparation
• Communicate effectively with coworkers and non- laboratory personnel
• Report all concerns of accessioning quality and/or safety to the Laboratory Director, Supervisor, or Safety Officer
• Participate in inspection preparation activities
• Review of controlled documents as assigned
• Participate in the training of new accessioning personnel on current procedures including the following:
  • Provide hands-on training
  • Provide guidance, feedback, and mentorship while respecting various learning styles
  • Ensure appropriate documentation is reviewed and completed
  • Participate in training meetings
  • Prioritize a positive work environment
  • Exhibit a dedication to team work above and beyond scheduled daily work
• Participate in projects and process improvements for sample receipt and accessioning

• Bachelor’s degree or equivalent in biology or related life sciences field
• Excellent attention to detail
• Effective written and verbal communication skills
• The ability to multitask and work independently

• Biophysics, Molecular biology (DNA purification, PCR, electrophoresis) or next-generation DNA sequencing laboratory experience
• At least 6 months of experience with molecular biology techniques in a research or clinical laboratory
• Previous clinical laboratory experience is preferred

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

From $0 to $150M+ in Annual Recurring Revenue in just five 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.

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