Senior Software Engineer, Prenatal

BillionToOne
Menlo Park
Workplace: HybridFull timeFunction: Software EngineeringExperience: 5-7 yearsSkills: ["Communication","Collaboration","Problem-solving","Teamwork","Leadership"]

Senior Software Engineer in a hybrid role working with clinicians, computational biologists, and engineers to scale personalized genomic medicine. You’ll design and deliver scalable backend services, architecture, and cloud infrastructure on AWS, collaborate across product and design, drive observability, and apply AI-assisted tooling to accelerate development in a fast-paced, mission-driven environment.

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FursaFursa
BillionToOne
BillionToOne
3 years ago

Senior Software Engineer, Prenatal

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Source: Company careers pageValidated by: Fursa AI
Last checked: 17 hours agoStatus: Live

Job Summary

Senior Software Engineer in a hybrid role working with clinicians, computational biologists, and engineers to scale personalized genomic medicine. You’ll design and deliver scalable backend services, architecture, and cloud infrastructure on AWS, collaborate across product and design, drive observability, and apply AI-assisted tooling to accelerate development in a fast-paced, mission-driven environment.
Location: Menlo Park
Workplace: Hybrid
Employment Type: Full time
Job Function: Software Engineering

Key Responsibilities

  • •Design, build, and operate scalable, high availability backend services, APIs, and data integrations that power customer facing product experiences
  • •Lead technical delivery across the full lifecycle: architecture, design, implementation, testing, deployment, and ongoing operations
  • •Collaborate closely with product, design, and cross functional engineering teams to deliver performant, reliable, and intuitive platform capabilities
  • •Develop clean abstractions and platform APIs that simplify complex LIS workflows while balancing developer velocity with long term system stability
  • •Build and maintain secure, reliable cloud infrastructure on AWS, including compute environments, networking, container orchestration, storage, and environment automation

Pay and Benefits

Perks:Health Insurance401kParental LeaveEv ChargingRemote Work

Key Requirements

  • •5-7 years of professional software development experience delivering complex projects
  • •Deep understanding and experience with web frameworks like Django and FastAPI
  • •Strong system design and architecture capabilities using domain-driven design to translate complex business domains into scalable boundaries
  • •Familiarity with modern AI-driven development practices and tools
  • •Strong foundation in cloud services, preferably AWS (ECS, S3, AWS Batch, EC2, Lambda) and related infrastructure
Experience:5-7 yearsBiotechHealthcareGenomicsMolecular diagnostics
Skills:CommunicationCollaborationProblem-solvingTeamworkLeadership
Languages:English
Tech Stack:PythonDjangoFastAPIPostgreSQLReactTypescriptAWSECSS3AWS BatchEC2AWS LambdaGitHub CopilotCursorClaude Code

Company Brief

BillionToOne
Develops molecular counting and sequencing technologies for precise genetic testing. Offers noninvasive prenatal tests and rare disease genomic assays to improve detection accuracy and reduce false positives for clinical and commercial labs.
Industry: Diagnostics
Company Size: Medium (51 to 250 employees)
Growth: Growth Stage Startup
Headquarters: Redwood City, United States
Founded: 2016
WebsiteLinkedIn