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Software Engineer, Digital Experiences

BillionToOne

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Location:
United States , Menlo Park

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

95041.00 - 126721.00 USD / Year

Job Description:

Ready to redefine what's possible in molecular diagnostics? Join a team of brilliant, passionate innovators who wake up every day determined to transform healthcare. At BillionToOne, we've built something extraordinary—a culture where transparency fuels trust, collaboration drives breakthroughs, and every voice matters in our mission to make life-changing diagnostics accessible to all. We don't just aim for incremental improvements; we strive to build products that are 10x better than anything that exists today. Our people are our greatest asset: talented scientists, engineers, sales professionals, and visionaries 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—every innovation you contribute helps remove fear of unknown from some of life's most critical medical moments. If you're driven by purpose, energized by innovation, and ready to help build the future of precision medicine, this is where you belong.

Job Responsibility:

  • Build and maintain robust applications and systems using React, Typescript, Django, Postgres, and other libraries
  • Collaborate with product design and product management to deliver delightful experiences for patients and providers
  • Foster a knowledge sharing culture within the team, contributing to the growth and development of colleagues through mentorship and collaborative learning
  • Demonstrate a creative and out-of-the-box mindset, offering innovative solutions and approaches to complex technical challenges
  • Prioritize quality by writing comprehensive unit tests and ensuring adequate test coverage across all components and modules
  • Demonstrate a strong sense of ownership and take responsibility for end-to-end project delivery

Requirements:

  • 2-5 years of professional software development experience with a proven track record of delivering complex projects and adhering to best practices
  • Experience with modern frontend technologies, specifically with Typescript, React, and CSS-in-JS libraries
  • Experience with web frameworks such as Django
  • Familiarity with modern AI-driven development practices and tools
  • Excited about working in-person with our team in Menlo Park

Nice to have:

  • Previous startup or entrepreneurial experience
  • Experience in driving products from zero to one
  • Familiarity with healthcare data and standards like FHIR and HL7
  • Interest in engaging with and applying LLMs
What we offer:
  • Multiple medical benefit options
  • employee premiums paid 100% of select plans, dependents covered up to 80%
  • Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%)
  • 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)
  • Generous equity options offering
  • Corporate bonus program

Additional Information:

Job Posted:
December 26, 2025

Employment Type:
Fulltime
Work Type:
Hybrid work
Job Link Share:

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