Automation Service Engineering Associate I/II, Oncology

BillionToOne Inc.; Menlo Park (CA); On-site; USD 60,000 - 68,000; Full time

Job summary

BillionToOne Inc. is seeking an Automation Service Engineering Associate I/II to support clinical patient testing at the Menlo Park site. You will troubleshoot and maintain lab automation equipment, perform installations and qualifications, and ensure detailed records and robust documentation.

The role emphasizes teamwork, quality, and a proactive approach to process improvements in a CLIA-lab environment. On-site with a 2:30pm–11pm shift, generous benefits and growth opportunities included.

Qualifications

• 1+ year serving Liquid Handlers or 2+ years in a technical service role.
• Basics of coding language and flow control logic.
• Understanding of clinical laboratory assays and their applications.
• Identify, analyze and solve problems with minimal direction.
• Strong willingness to learn in a complex laboratory environment.
• Strong attention to detail and accuracy.
• Excellent GDP documentation skills.
• Strong communication skills (verbal and written).

Responsibilities

• Work in a team responsible for service, support, and troubleshooting of automated processes and instrumentation.
• Perform routine maintenance of laboratory equipment.
• Conduct Installation, Operational, and Performance Qualification on equipment.
• Troubleshoot equipment issues and involve vendors as required.
• Draft equipment operation and maintenance documentation as needed.
• Suggest process improvements and design a plan to execute them.
• Maintain organized equipment parts inventory and comprehensive equipment records.
• Execute special projects as assigned.

Skills

Liquid handlers

Troubleshooting

Documentation

Problem solving

Communication

Detail oriented

GDP knowledge

Education

Associate degree

Job description

A Rare Opportunity to Shape the Future of Genomics

Join a team of brilliant, passionate innovators determined to transform healthcare. At BillionToOne, we've built a category-defining, publicly traded company 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 don't just aim for incremental improvements; we build products that are 10x better than anything that exists today.

Our scientists, engineers, sales executives, and visionaries are united by an unwavering commitment to changing the standard of care in prenatal and cancer diagnostics. This is where cutting-edge science meets human compassion, and every innovation you contribute helps remove the fear of the unknown from some of life's most critical medical moments.

If you're driven by purpose, energized by innovation, and ready to help shape the future of precision medicine at scale, this is where you belong.

We are looking for Automation Service Engineering Associates I/II to join our growing Service Engineering team in support of clinical patient testing in one of our CLIA labs. The Automation Service Engineering Associate I/II will be responsible for delivering primary service response to laboratory operations at the Billion To One - Menlo Park (Oncology) location. The selected candidate will be part of a team responsible for troubleshooting, repair, and maintenance of laboratory equipment. The ideal candidate for this position is skilled in providing excellent customer service, troubleshooting errors with laboratory automation equipment, and maintaining detailed records of issues and resolutions. The role is an onsite position.

Shift Hours: Tuesday-Saturday or Sunday-Thursday, 2:30pm-11pm (+30% PM Shift Differential)

Responsibilities:

• Work in a team responsible for service, support, and troubleshooting of automated processes and instrumentation
• Execute or coordinate routine maintenance of laboratory equipment
• Perform Installation, Operational, and Performance Qualification on equipment
• Troubleshoot and triage equipment issues and involve vendors as required
• Draft documentation related to equipment operation and maintenance as needed
• Suggest process improvements and design a plan to execute them
• Maintain organized equipment parts inventory and comprehensive equipment records
• Execute special projects as assigned

Qualifications:

• Associate II: 1+ years of experience servicing Liquid Handlers, or 2+ years experience in a technical service role
• Familiarity with the basics of a coding language and flow control logic
• Understanding of clinical laboratory assays and their applications
• Ability to identify, analyze and solve problems with minimal direction
• Strong willingness to learn in a complex laboratory environment
• Strong attention to detail and accuracy
• Excellent documentation skills with working knowledge of Good Document Practices (GDP)
• Strong communication skills (verbal and written)

Nice-to-Haves:

• Experience with troubleshooting liquid handler scripts is desirable
• Programming and coding experience
• Experience working in a CLIA regulated environment
• Experience developing training programs and performing knowledge transfer
• Ability to effectively work in a team environment and build strong working relationships
• High degree of initiative and self-motivation
• Working alongside brilliant, kind, passionate and dedicated colleagues, in an empowering environment, toward a global vision, striving for a future in which transformative molecular diagnostics can help millions of patients
• Open, transparent culture that includes weekly Town Hall meetings
• The ability to indirectly or directly change the lives of hundreds of thousands patients
• Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80%
• Extremely generous Family Bonding Leave for eligible employees (16 weeks, paid at 100%)
• Free UNITY Complete NIPT testing for employees & spouses
• Supplemental fertility benefits coverage
• Retirement savings program including a 4% Company match
• Increase paid time off with increased tenure
• Latest and greatest hardware (laptop, lab equipment, facilities)
• Free daily on-site lunches provided from top eateries
• A variety of perks on campus (state of the art gym, restaurant)
• Free on-site EV charging (compatible with all EVs, including Tesla)

At BillionToOne, we are proud to offer a combination of a (1) base pay range (actual amount offered is based on experience and salary/equity options split that the candidate chooses), (2) generous equity options offering, (3) corporate bonus program, on top of (4) industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.).

For this position, we offer a total compensation package of up to $84,891 per year, including an hourly rate of $28.90 - $32.84 per hour. Compensation is commensurate with experience and leveling.

BillionToOne is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

BillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. Our revolutionary QCT molecular counting technology enhances disease detection resolution by over a thousandfold using cell-free DNA,a breakthrough that has already transformed the lives of over half a million patients worldwide.

Our Impact

Unity Complete™ is the only non-invasive prenatal screen capable of assessing fetal risk for both common recessive conditions and aneuploidies from a single maternal blood sample.
Unity Confirm™ enables non-invasive confirmation for high-risk screening results through the capture of intact circulating fetal cells using BillionToOne’s Fetal Cell Capture™ Technology.
Our Northstar® liquid biopsy test uniquely combines treatment selection with real-time monitoring, giving oncologists unprecedented precision in cancer care.

Our Growth

From $0 to $400M+ annualized revenue run-rate in just 6 years. In 2025, we completed one of the most successful IPOs for a medical diagnostics company, building on nearly $400M in private funding,including our $130M Series D in 2024 and backed by world-class investors including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest.

Our Recognition

Forbes named us one of America's Best Startup Employers for 2025 and we're Great Place to Work certified, with 100% of our people willing to go the extra mile, even as we've scaled to over 700 employees.

Our Future

Headquartered in Menlo Park with facilities in Union City, CA, and a new lab opening in Austin, TX in 2027, we're continuing to push the boundaries of what's possible in molecular diagnostics. We're just getting started.