Reagent Manufacturing Associate (RMA) II, Oncology

BillionToOne
Menlo Park, CAPosted 15 April 2026

Tech Stack

Job Description

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 a Reagent Manufacturing Associate II, Oncology to join our growing reagent manufacturing team in support of clinical patient testing in our high throughput CLIA lab. The Reagent Manufacturing Associate II will be responsible for assisting with the manufacturing, assembly, and qualification of reagents in support of clinical laboratory operations at BillionToOne. The selected candidate will also be responsible for assisting in the troubleshooting of reagent manufacturing activities, management of sufficient reagent inventory, and operation of high-throughput automated equipment to support operations. . This position requires an individual with excellent attention to detail, effective written and verbal communication skills, the ability to multitask, and the ability to work both independently and as part of a highly collaborative team environment. The role is a f ull-time onsite position in Menlo Park, CA and reports to Senior Process Engineer II, Oncology. Shift Hours: Monday - Friday, 9am - 5pm Responsibilities: Manufacture medium and high complexity reagents in a molecular manufacturing lab according to established SOPs. Operation of robotic laboratory equipment and traditional lab equipment (micropipettes, liquid handlers, thermal cyclers, centrifuges, sealers, sonicator, etc.) Use of traditional molecular biology processes and techniques (small volume pipetting, plating, quantitation, visual inspection) Maintaining thorough, accurate and detailed documentation of all work produced, including deviations Inventory management Collaborate with Research and Development for the scale-up and implementation of new reagent formulations. Participate in reagent troubleshooting and quality monitoring Lab maintenance such as labware cleaning and equipment maintenance as needed Daily completion of assigned tasks to keep manufacturing on track Reagent manufacturing will primarily be operating out of Menlo Park but may require some flexibility to work out of the Union City location Requirements: Bachelor’s degree or equivalent degree in biology, chemistry, or clinical related sciences At least one year of experience with molecular biology techniques in a research or clinical laboratory Excellent attention to detail Effective written and verbal communication skills The ability to multitask and work independently Patience and flexibility Previous clinical laboratory experience is preferred Nice-to-Haves: Start-up experience Experience in a cell-free DNA setting Experience developing training programs and performing knowledge transfer. Strong communication skills (verbal and written). Ability to effectively work in a team environment and build strong working relationships. High degree of initiative and self-motivation. Benefits And Perks: Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future ... (truncated, view full listing at source)
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