Senior Software Engineer, Frontend

About the role

BillionToOne is seeking a Senior Software Engineer, Frontend to join our dynamic software engineering team. This role is hybrid (2-3 days/week onsite).

Responsibilities

• Collaborate with talented engineers to design and develop our backend services, data processing pipelines, and interfaces.
• Build user-facing frontend features to optimize performance and reliability.
• Demonstrate a creative and out-of-the-box mindset, offering innovative solutions and approaches to complex technical challenges.
• Prioritize quality by writing comprehensive unit / integration / end-to-end tests and ensuring superior test coverage.
• Write technical documentation and validation reports that assure correct functionality of medical informatics systems.
• Take responsibility for end-to-end project delivery.

Requirements

• 5+ years of professional software development experience with a proven track record of delivering complex projects and adhering to best practices.
• Expertise in frontend engineering using modern libraries like Typescript, React, and HTMX.
• Familiarity with modern AI-driven development practices and tools.
• Excellent communication and collaboration skills, with the ability to work effectively in a team-oriented environment.
• Proven track record of building products and features from conception to deployment.
• Experience in healthcare-related software or a passion for improving healthcare systems.
• Familiarity with healthcare data standards, such as FHIR and HL7.
• Experience leveraging AI-assisted coding and debugging tools.
• Experience building AI agents, fine-tuning machine learning models, or deploying LLM-based applications.

Benefits and Perks

• Open, transparent culture with weekly Town Hall meetings.
• The ability to indirectly or directly change the lives of hundreds of thousands of patients.
• Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered at 80%.
• Extremely generous Family Bonding Leave for new parents (16 weeks, paid at 100%).
• Retirement savings program including a 4% Company match.
• A variety of perks on campus (state of the art gym, restaurant).
• Free daily on-site lunches provided from top eateries.
• Latest and greatest hardware (laptop, lab equipment, facilities).
• Free on-site EV charging (compatible with all EVs, including Tesla).

Pay

Total compensation package of up to $321,120 per year, including a base pay range of $193,800 - $214,200 per year.