BillionToOne · 1 hour ago
Senior Software Engineer, Digital Experiences
Menlo Park, CA
Full-time
Hybrid
Senior Level
$190K/yr - $211K/yr
5+ years expBillionToOne is a next-generation molecular diagnostics company on a mission to make powerful, accurate diagnostic tests accessible to everyone. They are seeking a Senior Software Engineer to join their dynamic software engineering team, responsible for building and maintaining robust applications that enhance the digital experience for clinicians and patients in the healthcare sector.
BiotechnologyGeneticsHealth DiagnosticsMedical
Responsibilities
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. The ideal candidate will thrive in an environment where they have the autonomy to make informed decisions and take the initiative to drive projects forward
Champion engineering excellence through architectural best practices, code quality standards, and thoughtful code reviews that emphasize both functionality and security
Apply a security and compliance mindset ensuring adherence to relevant regulations while implementing appropriate safeguards for sensitive patient information
Confidently challenge ideas and assumptions from stakeholders when necessary, while at the same time, leverage their expertise and insights to improve the overall solution
Qualification
Required
5+ years of professional software development experience with a proven track record of delivering complex projects and adhering to best practices
Deep experience with modern frontend technologies, specifically with Typescript, React, and CSS-in-JS libraries
Have implemented frontend architecture best practices such as component systems, npm workspaces, Storybook, and Playwright testing
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
Preferred
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
Benefits
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 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)
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
Industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave, etc.)
Company
BillionToOne
BillionToOne is a precision diagnostics company that focuses on genetic testing for disease detection.
501-1000 employees
H1B Sponsorship
BillionToOne has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (10)
2024 (6)
2023 (2)
2022 (2)
2021 (1)
2020 (2)
Funding
Current Stage
Public CompanyTotal Funding
$425.9MKey Investors
Premji InvestBridge BankHummingbird Ventures
2025-11-06IPO
2024-06-21Series D· $130M
2022-12-15Series C· $48.5M
Leadership Team
J
Jean Hayden
VP of Operations and Chief of Staff to the CEO
Oguzhan Atay
Co-founder and CEO
Recent News
2026-01-16
Company data provided by crunchbase