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BillionToOne

QCT-based molecular diagnostics for prenatal, oncology

Senior LIMS Engineer - Prenatal

Backend EngineeringConfirmed live in the last 24 hours
Full-timeUnion City, CA, USA

About the Job

Requirements

  • A Bachelor's degree with a biological or computational focus is required.
  • Experience with both Python and AI-assisted development is required.
  • At least 5 years of experience developing LIMS, applications, or customer-facing tools is required.
  • The candidate must be able to troubleshoot and diagnose advanced technical issues.
  • Experience developing scripting solutions to automation problems is required.
  • The candidate must demonstrate attention to detail and the ability to work flexibly within accelerated timeframes.
  • The candidate must have strong written and verbal communication skills.

Responsibilities

  • Develop modern, user-friendly, secure software for the clinical laboratory.
  • Solve complex issues in sample handling, automations, or infrastructure that affect laboratory processing.
  • Work with cross-functional teams to gather requirements, facilitate user acceptance testing, iterate on feedback, file quality system paperwork, and launch products.
  • Work independently and prioritize projects based on company goals.
  • Mentor junior LIMS engineers and technical members of other teams in best practices.
  • Participate in LIMS code reviews, verifications, and validations.
  • Ensure compliance with all relevant corporate and regulatory requirements.

Desired Qualifications

  • Experience working in a CLIA laboratory, medical device, or pharmaceutical environment.
  • Experience with data analysis using Python, SQL, or Excel.
  • Familiarity with Quality Management Systems and related regulations, including CFR 21 Part 11 and ISO 13485.

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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