
BillionToOne is hiring a
Senior Software Engineer, Oncology
About BillionToOne
BillionToOne is ranked at the top 5% of Y Combinator companies with close to $400M in funding. In June 2024, we closed a $130M Series D resulting in a company valuation of over $1 billion. We have developed a DNA molecular counter that increases cfDNA diagnostic resolution by over 1,000x. Our first product, Unity, is the first and only non-invasive prenatal test that can directly screen an unborn baby and assess its risk for common and severe recessive gene disorders, chromosomal abnormalities, fetal sex, and fetal antigens from a single tube of blood from the pregnant mother.
Job Description
Senior Software Engineer, Oncology: Build and maintain software infrastructure and digital experiences for oncology test results. You will scale genomic pipelines and data handling for cancer-related tests, collaborating closely with clinicians and computational biologists. Core stack includes Python, Django, Postgres, React, TypeScript, AWS, Docker, Terraform, Kafka, CircleCI, Datadog. This is one of multiple senior software-engineering roles at BillionToOne.Remote
Remote Conditions
Hybrid (2-3 days/week)
Salary
280K
ย toย
307K
Benefits
Unlimited access to the latest AI tools and models with unlimited usage; 100% paid medical on select plans; 16 weeks fully paid parental leave; 401(k) with 4% match; daily catered lunch; on-site gym
Tech Tags
AWSApache KafkaCircleCIClaude CodeCopilotCursorDatadogDjangoDockerPostgreSQLPythonReactTerraformTypescript
Equity Offered
Senior Role
Date Listed
02 March, 2026 (16 days ago)













