[Hiring] Medical Science Liaison @BillionToOne

Role Description

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 are looking for a field-based professional Medical Science Liaison (MSL) in Illinois, Minnesota, Missouri, Kansas, Florida, North Carolina, South Carolina, or Texas with scientific and clinical expertise in the space of prenatal genetic testing. The Medical Science Liaison (MSL) is responsible for providing medical and scientific support for BillionToOne's marketed products UNITY™ Complete. The Medical Science Liaison (MSL) is a remote position.

Travel Requirements:

• Ideal candidate will have the ability to travel up to 70% nationwide

Responsibilities:

• Serve as a key liaison to health care providers (HCPs)
• Serve as a key member of the BillionToOne Medical Affairs team
• Develop relationships by engaging in scientific exchange with medical and scientific partners
• Support commercial team by providing impactful information that enhances the value and proper use of BillionToOne products
• Respond to HCP customer inquiries to provide focused and balanced clinical and scientific information that supports the appropriate use of BillionToOne’s prenatal products
• Provide education regarding the clinical differentiation of BillionToOne's products and services
• Contribute to development of provider and patient educational products
• Adhere to internal standard processes and comply with regulatory and compliance requirements

Qualifications

• Master’s degree in Genetic Counseling
• Board certified ABGC or ABMG
• 3-5 years of prenatal clinical and/or industry experience in related field required
• Expertise in discussing scientific content and context to multiple audiences
• Excellent communication, presentation and interpersonal skills
• Ability to travel (up to 70%) – percentage varies with geography

• Bilingual in English and Spanish is a plus, but not required

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 thousand 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)
• Competitive base pay, generous equity options offering, corporate bonus program, and industry leading company benefits

For this position, we offer a total compensation package of up to $186,855 per year, including a base pay range of $139,340 - $160,777 per year.

Company Description

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™ 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.
• Northstar® 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.
• Completed one of the most successful IPOs for a medical diagnostics company in 2025.
• Forbes named us one of America's Best Startup Employers for 2025 and we're Great Place to Work certified.

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