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 Patient Billing Associate to drive high impact initiatives that impact account growth, retention, and revenue through daily interactions with our customers. The Patient Billing Associate is on the front lines with our existing and potential customers, including clinics, medical staff, and patients. The ideal candidate for this role is a smart, ambitious, and talented individual who is extremely passionate about delivering strong results and a positive customer experience. The Patient Billing Associate is a remote position and reports to the Assoc. Director, Inside Sales.

Responsibilities:

• Personally engage customers in a positive and friendly manner to proactively resolve issues that may impact account growth or retention
• Oversee and effectively respond to all types of communication in a courteous and articulate manner: phone, email, and web inquiries from customers (physician offices), field sales representatives, and existing or potential patients
• Handle a variety of inquiries, including questions about our technology, products, and services, costs, billing, and insurance coverage
• Keep precise and clear documentation of all communications and follow-up activities
• Contact patients through outbound calling and SMS to explain potential costs and address billing concerns
• Contact physicians and other medical personnel to obtain missing information that is pertinent to reimbursement
• Manage a queue of customers that need to be contacted and effectively follow through on a scheduled contact cadence until resolved
• Handle 20-30 inbound calls and 40-50 outbound calls per day

Requirements:

• 2+ years of prior client-facing experience 
• Inside Sales / Customer Service background in a fast paced, high-volume environment strongly preferred
• Experience using Salesforce 
• Advanced organizational skills with the ability to handle multiple assignments
• Fast learner with the ability to navigate complex workflows and technology
• Outstanding verbal, written and presentation skills - ability to effectively tailor messages to different audiences

Nice to Have:

• Speaking fluently in Spanish

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
• Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered at 80%
• Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%)
• Retirement savings program including a 4% Company match
• 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 a (1) base pay (2) generous equity options offering, on top of (3) 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 $67,350 per year, including a base pay rate of $51,000 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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About BillionToOne

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's already transformed the lives of over half a million patients worldwide.

Our Impact: We've pioneered game-changing diagnostic solutions that are redefining industry standards. Unity Complete™ stands as the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample. In oncology, 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 $125 million in Annual Recurring Revenue in just four years. We've raised close to $400 million in funding, including a $130 million Series D round in June 2024, achieving a valuation of over $1 billion. This backing comes from world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest.

Our Recognition: Forbes recently named us one of America's Best Startup Employers for 2025, and we were awarded Great Place to Work certification in 2024—with an incredible 100% of our people reporting they are willing to give extra to get the job done. These honors recognize not just our innovation but the exceptional culture we've cultivated—one that remains authentically collaborative and transparent even as we've scaled.

Our Future: Headquartered in Menlo Park with facilities in Union City, California, we're continuing to push the boundaries of what's possible in molecular diagnostics. Recent clinical outcomes data for Unity Fetal Risk Screen and new advances in cancer diagnostics prove we're just getting started.

At BillionToOne, you'll join a diverse team of passionate innovators who believe that the best science happens when brilliant minds collaborate openly, think boldly, and never lose sight of the patients whose lives depend on our work.

Ready to help us change the world, one diagnosis at a time?

Learn more at www.billiontoone.com