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Development Associate, Oncology

Billion to One · Menlo Park, CA

onsitejunior$76,155–$87,034Posted Oct 22, 2026PythonR

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About this role

## A Rare Opportunity to Shape the Future of Genomics Join a team of innovators transforming healthcare. At BillionToOne, we build category-defining, publicly traded diagnostics 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’re seeking a **Development Associate** to join our growing **Oncology Development and Process Engineering** team in support of **clinical patient testing** in our **high-throughput CLIA lab**. ### What You’ll Do This role will help you gain deep and broad experience across: - **Molecular assay development** - **Data analysis** - **Experimental design** - **Automation** This is an **on-site role** requiring the majority of days in our **Menlo Park office**. ### Responsibilities - **Assay & Method Development:** Develop and extend current assays to better fit evolving clinical needs, with support from scientists, engineers, and other technical staff. - **Computational Data Analysis:** Apply analytical/computational methods used in current assays and build new capabilities; develop, implement, and use software tools to quantitatively analyze experiments and processes (moderate proficiency in **R or Python**). - **Validation & Regulatory Compliance:** Support assay validations and derisking under regulatory and design control frameworks (e.g., **FDA, MolDx**, etc.). - **Scientific Communication:** Present technical findings and project updates verbally and via internal written reports. - **Wet Lab Execution:** Carry out experiments in the lab and support ongoing development work. *Note: The provided description appears truncated after “Carry out experiments in lab and...”. If you share the remainder, I can format the full posting.*

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