Senior/Staff Backend Engineer for AI Medical Platform

Xapply; San Francisco (CA); On-site; USD 180,000 - 250,000; Full time

Job summary

Heartflow, a medical technology company, is seeking a Senior or Staff Software Engineer to design, build, and operate the backend services behind our clinical platform. You will own end-to-end delivery of core data pipelines and APIs moving imaging data through the AI analysis workflow, with emphasis on correctness, security, and regulatory compliance.

You will mentor engineers, contribute to CI/CD and infrastructure as code, and collaborate with Product, Clinical, Operations, and Regulatory

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or related discipline, or equivalent experience.
• 7+ years of professional software engineering experience for the Senior level; 10+ years, including demonstrated technical leadership beyond a single team, for the Staff level.
• Strong backend programming skills in Python or Java, with solid fundamentals in OOP, data modeling, concurrency, and API design.
• Hands-on experience building and operating services on AWS, and working knowledge of SQL and NoSQL databases.
• Experience designing, shipping, and operating production services in distributed/microservices architectures.
• Ownership of a meaningful service end-to-end, including reliability and performance in production.
• Disciplined approach to automated testing, code review, and debugging; able to explain why code is correct.

Responsibilities

• Design, build, test, and operate backend services and APIs for the Heartflow clinical platform, from design review through production monitoring.
• Translate product and clinical requirements into technical designs; write and review design documents; consider trade-offs among correctness, performance, security, and maintainability.
• Write high-quality, well-tested code; maintain documentation and review processes for regulated environments.
• Build and improve services and data pipelines handling imaging data and analysis results securely at scale.
• Implement secure-by-default patterns for authentication, authorization, access control, and data integrity.
• Own reliability and performance; instrument systems, monitor, and respond to production issues; participate in on-call.
• Contribute to CI/CD, infrastructure-as-code, and developer tooling to speed delivery.
• Produce design, verification, and traceability documentation for FDA-regulated software and HIPAA handling.

Skills

Python

Java

AWS

SQL

NoSQL

Django

DICOM

HL7

FHIR

CI/CD

Terraform

Agile

Education

Bachelor’s degree or equivalent experience

Tools

AWS Services (Lambda, ECS, EKS, Fargate, S3, SQS, VPC)

Infrastructure as Code (Terraform, CDK)

Job description

Heartflow, a medical technology company, is seeking a Senior or Staff Software Engineer to design, build, and operate the backend services behind our clinical platform. You will own end-to-end delivery of core data pipelines and APIs moving imaging data through the AI analysis workflow, with emphasis on correctness, security, and regulatory compliance.

You will mentor engineers, contribute to CI/CD and infrastructure as code, and collaborate with Product, Clinical, Operations, and Regulatory