Research Associate Intern at Billiontoone

Ready to redefine what's possible in molecular diagnostics? 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 an interdisciplinary Research Associate Intern to perform experiments and assays under the guidance of experienced Scientists. The Research Associate intern is an on-site position in our Menlo Park, CA office. Responsibilities: • Perform experiments and assays under the guidance of experienced Scientists • Learn analytical and computational methodologies and analyze the results under the guidance of experienced Scientists • Assist experienced Scientists in assay development • Keep accurate and meticulous records of experimental details and results • Prepare biological samples and reagents to accelerate the R&D process • Manage, organize, and support lab operations Qualifications: • Anticipated undergraduate/masters major in Molecular and Cell Biology, Microbiology, Biophysics, Biochemistry, or related field • Laboratory research experience • An ability to quickly learn mathematical, analytical, and experimental concepts • High mathematical and statistical aptitude (e.g., you find GRE math section to be extremely easy) • Great attention to detail Nice-To-Haves: • Experience with standard molecular biology techniques relating to DNA such as PCR • Experience in a cell-free DNA setting • Experience with next-generation sequencing library preparation • Experience with computational analysis in R, Python, or other programming language Benefits And Perks: • Working with a team of ‘rockstars’ who bring out the best in everyone • Open, transparent culture that includes weekly Town Hall meetings • The ability to indirectly or directly change the lives of hundreds of thousand patients • Free daily on-site lunches provided from top eateries • Latest and greatest hardware (laptop, lab equipment, facilities) • A variety of perks on campus (state of the art gym, restaurant) • Free on-site EV charging (compatible with all EVs, including Tesla) At BillionToOne, we are proud to offer a combination of (1) competitive base pay, and (2) the opportunity for professional growth. For this position, the base pay rate is $25 per hour. 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. 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. 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 $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. 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