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Senior Process Engineer

Updated on 7/1/2024



201-500 employees

Precision diagnostics with molecular counting technology


Compensation Overview

$120k - $140kAnnually

+ Equity Options


Menlo Park, CA, USA

Engineering Management
Systems Engineering
Quality Assurance
Required Skills
Data Science
  • Bachelor’s or Master’s (preferred) degree in biology, bioengineering, or related sciences
  • At least 5-6 years of experience with molecular biology techniques in a research or clinical laboratory
  • Proficiency in R or python
  • Strong Statistical Analysis skills
  • Strong Experience designing rigorous, well controlled studies
  • Experience with data presentation and technical report authoring
  • Experience working with GMP, ISO, or equivalent environments, with strong knowledge of Quality Management Systems and practices
  • Excellent attention to detail
  • Effective written and verbal communication skills
  • Experience mentoring junior team members
  • Possess logical troubleshooting skills
  • Experience with automation or clinical laboratory experience is a bonus
  • Source and evaluate external technologies which might benefit COGS, process throughput, assay performance, or other key operational metrics.
  • Develop the strategies to support 2-3X annual growth in commercial volume.
  • Build upon the existing statistical Process Control system to enable ever decreasing failure rates and ever increasing assay performance.
  • Mentor junior engineers and help to establish strong skills and industry best practices across the growing PE team.
  • Plan studies in conjunction with RnD to identify CPPs, process tolerances, and failure modes during late stage product development.
  • Work with Bioinformatics and data science to translate assay CQAs into impactful and actionable process monitoring tools.
  • Develop new data and information handling tools to aid in efficient sample processing within the clinical laboratory.
  • Apply six sigma, Design-for-quality, and 5S frameworks to existing or new processes to improve both capability, scalability, and quality of molecular diagnostic assays.
  • Support high throughput CLIA lab through troubleshooting instrumentation and re-qualifying instrumentation back into clinical use
  • Identify root causes for process and instrument errors and develop long term solutions.

BillionToOne is at the forefront of precision diagnostics, employing its unique Quantitative Counting Templates (QCTs™) to achieve unprecedented accuracy in detecting disease-related DNA fragments. This focus on prenatal screening and oncology testing not only positions the company as a leader in molecular diagnostics but also demonstrates a commitment to enhancing healthcare outcomes. The environment at BillionToOne fosters continuous innovation and precision in a field that directly contributes to improving patient care and accessibility of vital diagnostics.

Company Stage

Series C

Total Funding



Menlo Park, California



Growth & Insights

6 month growth


1 year growth


2 year growth



Competitive pay

Retirement savings package

Parental leave

Free snacks & lunches

Medical, dental, & vision premiums

On campus perks

Free-on-site EV charging