Research Associate

BillionToOne•Menlo Park, CA
•Onsite

About The Position

BillionToOne is hiring a Research Associate to contribute to the development of molecular diagnostic products in prenatal medicine and oncology. The role offers early-career scientists the opportunity to work with interdisciplinary teams across molecular biology, genomics, bioinformatics, and quantitative modeling, using molecular techniques, next-generation sequencing, and robotic tools to advance assays from research prototypes toward commercial products. The position is on-site at the company's Menlo Park, California office. The Research Associate will be mentored by Senior Scientists and collaborate with scientists, engineers, and other teams in a fast-paced environment. The company seeks someone with strong quantitative and statistical reasoning, meticulous experimental habits, ambition to contribute to patient-impacting products, and clear, proactive communication. The role provides a foundation for a scientific career, including for people who may later pursue graduate studies.

Requirements

  • BS or MS in Bioengineering, Molecular and Cell Biology, Microbiology, Biophysics, Biochemistry, or a related field.
  • 1–2 years of research experience, either during a BS/MS program or afterward.
  • Previous experience with standard molecular biology techniques, particularly extensive experience with PCR, electrophoresis, and DNA purifications.
  • Ability to quickly learn mathematical, analytical, and experimental concepts.
  • High mathematical and statistical aptitude.
  • Great attention to detail.
  • Strong communication and collaboration skills for a fast-paced, cross-functional environment.
  • Rigorous experimental recordkeeping and careful control design.

Nice To Haves

  • Start-up experience.
  • Knowledge of medical genetics.
  • Experience in a cell-free DNA setting.
  • Experience with next-generation sequencing library preparation.
  • Computational analysis experience in R, Python, or another programming language.

Responsibilities

  • Design, execute, and troubleshoot experiments and assays under the guidance of Senior Scientists.
  • Learn analytical and computational methodologies to analyze results under the guidance of Senior Scientists.
  • Present scientific findings verbally at group meetings and through internal written reports.
  • Document experimental details and results.
  • Collaborate with other teams to implement laboratory and bioinformatic workflows.
  • Contribute positively to organizing and maintaining the R&D laboratory.

Benefits

  • Multiple medical benefit options; employee premiums are paid 100% for select plans, and dependents are covered up to 80%.
  • Family Bonding Leave for eligible employees: 16 weeks, paid at 100%.
  • Supplemental fertility benefits coverage.
  • Retirement savings program with a 4% company match.
  • Paid time off increases with tenure.
  • Latest hardware, laboratory equipment, and facilities.
  • Daily on-site lunches provided from local eateries.
  • On-campus amenities including a gym and restaurant.
  • Free on-site EV charging.
  • Annual bonus eligibility.
  • New-hire equity grant of up to $20,000 at grant value, vesting over four years, plus annual equity refresh grants equal in value to the new-hire grant.
  • Competitive medical and dental coverage.
  • 401(k) with company match.
  • Opportunity to work with colleagues in an empowering, transparent culture toward a global vision.
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