Senior Software Engineer (Backend)

The role

You will own major parts of the system that turns EHR data from health-system partners into results. The role focuses on backend, data, and EHR integration engineering on AWS. You will also use AI tools for MLOps, infrastructure, and product engineering as needed.

What you will do

• Design, build, and operate secure, auditable pipelines on AWS.
• Build and extend EHR integrations using FHIR APIs.
• Build AI-assisted tooling for partner and data source onboarding.
• Lead technical go-lives with partner IT and data teams.
• Manage infrastructure, DevOps, and security including HIPAA and HITRUST controls.
• Package, run, and monitor models in production.
• Build reports, dashboards, and clinician- and patient-facing products.
• Set engineering standards and mentor new engineers.
• Use AI coding agents and automation.

Required qualifications

• BS in Computer Science or a related field, or equivalent practical experience.
• At least 7 years of professional software engineering experience building and operating production backend systems and data pipelines.
• Hands-on healthcare data experience, including EHR data, FHIR or HL7, clinical vocabularies such as LOINC, SNOMED, ICD, and RxNorm, and systems that handle PHI under HIPAA.
• Substantial production experience on AWS.
• Proficiency in Python and SQL.
• Experience running AI/ML systems in production.
• Daily use of AI coding agents and agentic workflows.
• Experience in an early-stage startup or a comparable zero-to-one environment.
• Experience debugging hard problems across system boundaries.
• Clear communication with engineers, data scientists, clinicians, and partner IT teams.

Nice to have

• Built EHR integrations with athenahealth, Epic, or similar systems, including SMART on FHIR or bulk FHIR exports.
• Worked with infrastructure as code (CDK, Terraform, or similar), containers, and CI/CD.
• Built software under HITRUST, SOC 2, or FDA quality-system expectations.
• Frontend or full-stack experience (for example, React and TypeScript).
• Worked on integrated teams where engineers and data scientists share code, reviews, and responsibility for results.

Benefits

• Healthcare coverage
• Annual incentive program
• Retirement benefits
• A broad range of other benefits

About the company

FL113 is a fast-moving AI diagnostics company that is part of the Flagship Pioneering ecosystem. Flagship Pioneering is a venture-creation platform that creates companies at the frontier of science and technology.