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BillionToOne

QCT-based molecular diagnostics for prenatal, oncology

Senior Process Engineer - Oncology

Bioprocess & BiomanufacturingConfirmed live in the last 24 hours
Full-timeMenlo Park, CA, USA

About the Job

Requirements

  • A Bachelor's, Master's, or Ph.D. in biology, bioengineering, or related sciences is required.
  • At least 5–6 years of experience with molecular biology techniques in a research or clinical laboratory is required.
  • Proficiency in R, Python, or an adjacent coding language is required.
  • Strong statistical analysis skills are required.
  • Experience designing rigorous, well-controlled studies in a molecular biology environment is required.
  • Experience with data presentation and technical report authoring is required.
  • Experience working with GMP, ISO, or equivalent environments, with strong knowledge of Quality Management Systems and practices, is required.
  • Experience mentoring junior team members is required.
  • Logical troubleshooting skills are required.

Responsibilities

  • Source and evaluate external technologies that may benefit cost of goods sold, process throughput, assay performance, turnaround time, or other key operational metrics.
  • Develop strategies to support 2–3 times annual growth in commercial volume.
  • Build upon the existing statistical Process Control system to enable decreasing failure rates and increasing assay performance.
  • Mentor junior engineers and help establish strong skills and industry best practices across the Process Engineering team.
  • Facilitate technology transfer between research and development and the clinical laboratory, identifying critical process parameters, process tolerances, and failure modes while ensuring new workflows are properly implemented in the production environment.
  • Work with Bioinformatics and Data Science to translate assay critical quality attributes into impactful and actionable process monitoring tools.
  • Develop new data and information-handling tools to aid efficient sample processing and process monitoring within the clinical laboratory.
  • Apply Six Sigma, Design for Quality, and 5S frameworks to existing or new processes to improve capability, scalability, and quality of molecular diagnostic assays.
  • Lead thorough root cause analyses to identify and solve process issues, with a focus on long-term solutions.

Desired Qualifications

  • Start-up experience is preferred.
  • Knowledge of medical genetics is preferred.
  • Experience in a cell-free DNA setting is preferred.
  • Experience with Six Sigma, Lean, Just-in-Time, or the Toyota Production System is preferred.
  • Experience with CLIA/CAP, 510(k), PMA, and other regulatory requirements is preferred.
  • Experience with automation or clinical laboratory work is a bonus.

About the Company

BillionToOne

QCT-based molecular diagnostics for prenatal, oncology

BillionToOne provides molecular diagnostic testing for prenatal screening and cancer monitoring. Its QCT technology detects and measures DNA variations at a single base-pair level, enabling precise analysis across the three billion DNA letters. The main products, Northstar Select and Northstar Response, are tests that help doctors choose the best first-line therapy and track how well treatment is working, respectively. The company markets these services to healthcare providers who perform the tests and use the results to guide patient care. Unlike some rivals, BillionToOne emphasizes high-resolution DNA assessment and scalable diagnostic services through provider partnerships, aiming to improve accuracy, speed, and access. Its mission is to make molecular testing more accurate, efficient, and accessible to all, driven by growth, equality, and teamwork.

Company size
501-1,000
Company stage
IPO
Headquarters
Menlo Park, CA
Founded
2016

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