You've spent years sharpening your craft. Use your hard earned skills to work on problems that matter. The software we build here directly impacts lives.
View Open Positionsdef should_you_apply(you: Engineer): """Only one way to find out.""" reasons = [ you.wants_real_impact, you.loves_building, you.high_agency, you.learns_constantly, you.questions_assumptions, ] if any(reasons): apply()
Each sample represents a patient receiving insights that could change the course of their healthcare journey. Our products detect the most challenging prenatal genetics non-invasively, uncover over 50% more cancer treatment options, and track tumors months earlier than imaging.
You'll write code for patients waiting on test results and providers making decisions under pressure. A smoother lab workflow or a clearer result screen might seem like small things, but your attention to detail will directly improve patient and provider experiences.
Our engineering teams stay small because we want everyone working on problems that move the company forward. We hire people we trust, hand them real ownership, and get out of their way.
Python, React, TypeScript, AWS, Postgres. We choose battle-hardened foundations so we can ship quickly and confidently. We instrument what we build and measure what matters before it reaches a patient.
Engineers who join tend to stay, and when you ask them why, they point to the team. We're building a low-ego team with people who are thoughtful, curious, and easy to collaborate with.
We're looking for engineers who are intrinsically motivated and hold themselves to the highest standards. Every role directly impacts patient outcomes.
“We are at our best when we serve others... Let us be scientists for humanity.”
Our science begins with people. Every act of precision, collaboration, and care advances a shared mission—to bring intelligent, compassionate healthcare to every life we touch.
Our MissionAt BillionToOne, innovation happens everywhere — from our state-of-the-art labs to our collaborative creative spaces. We equip every employee, on-site or remote, with cutting-edge tools and technology designed to amplify creativity, precision, and impact.
Ongoing learning, mentorship, and structured programs to advance your skills.
One-year internal program: 35 hrs/week hands-on, 5 hrs/week didactic; CDPH-approved; ASCP prep.
Weekly town halls and clear communication across teams.
All positions have some variable pay component, which allows employees to generate an increase in pay based on their performance.
Retirement plan with up to a 4% company match and immediate vesting.
Performance reviews twice per year to promote multiple opportunities for development and advancement.
CarShare access, and WiFi-enabled commuter shuttles connecting BART, Caltrain, and San Francisco.
Onsite gyms with classes, weights, pools, saunas, climbing walls and more.
Daily catered lunches from local favorites; fully stocked kitchens.
Paid time off that increases with tenure.
Advanced equipment, hardware, and software in cutting-edge labs and collaborative work areas.
Multiple medical plans; employee premiums 100% on select plans, dependents covered up to 80%. Dental & vision included.
Supplemental fertility benefits to support every path to family.
16 weeks of 100% paid time off for eligible employees.
