Senior Marketing Specialist

The posting, as BillionToOne wrote it

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 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.

As a Senior Marketing Specialist at BillionToOne, you will play a critical role in bringing our marketing programs to life across channels. You will support the Marketing team by owning the day-to-day execution of marketing campaigns, managing our library of customer-facing collateral, coordinating projects and workflows, and helping ensure high-quality work moves efficiently from concept through launch.

This is an ideal role for a highly organized, detail-oriented marketer who loves making things happen. You are equally comfortable managing multiple projects, coordinating with creative and cross-functional partners, building an email campaign, proofing a customer-facing asset, or developing engaging social content. You take pride in operational excellence, have strong attention to detail, and proactively identify what needs to happen next.

You will work closely with the rest of the Marketing team and other cross-functional partners and will have the opportunity to develop broad experience across marketing channels in a fast-growing healthcare company.

This role may be remote or based out of our Menlo Park or Union City, CA offices and reports to the Marketing Operations Manager.

Responsibilities

• Campaign & Channel Execution
• Support lifecycle and integrated campaigns across email, webinar, SMS, direct mail, digital advertising, web, social, and sales channels, including product launches and newsletters.
• Build, test, and deploy campaigns and automations, coordinating audiences, segmentation, personalization, content, tracking, and QA.
• Support targeted programs including A/B tests, nurture campaigns, account-based marketing (ABM), and executive outreach, coordinating execution and documenting learnings.
• Monitor and report on campaign performance and program health, identifying opportunities to improve engagement and conversion.
• Marketing Collateral & Content Management
• Own the day-to-day management of BillionToOne's cust

[…]
l 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.
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.
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 $400M+ annualized revenue run-rate in just 6 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