Epsilon Labs

Software Engineer - Backend

Epsilon Labs · San Francisco, CA
San Francisco, CA Closed
Applications are closed for this role. It was originally posted 2026-07-30. It’s no longer accepting applicants — see roles Epsilon Labs is still hiring for →, or browse the live openings below.
Type
Full-time

ABOUT US

We're tackling one of healthcare's most critical challenges in medical imaging and diagnostics. Our company operates at the intersection of cutting-edge AI and clinical practice, building technology that directly impacts patient outcomes. We've assembled one of the industry's most comprehensive and diverse medical imaging datasets and have a proven product-market fit with a substantial customer pipeline already in place.

ROLE OVERVIEW

We're seeking a strong generalist Software Engineer (Backend) to build the production systems and customer integrations that bring our models into clinical use at scale. On a lean engineering team, you'll wear several hats: designing and shipping backend services and APIs, building the networking and integration layer that connects us securely to customer hospital systems, standing up production data pipelines and CI/CD, and keeping all of it HIPAA-compliant. You'll work closely with the ML team, lending a hand on ML infrastructure when priorities demand, and you'll do well here if you like owning ambiguous, high-impact problems end to end.

KEY RESPONSIBILITIES

  • Design, build, and operate backend services and APIs that deliver reliable end-to-end experiences from data ingestion through model output.
  • Build and maintain the integration layer connecting our applications to customer systems, including PACS, RIS, and EHRs, using medical communication protocols such as DICOM, DICOMweb, HL7, and FHIR.
  • Design reliable cloud networking for secure customer onboarding, including site-to-site VPNs and connectivity that scales to many external sites, and work directly with customer IT teams to bring each site online.
  • Build and operate production data pipelines and storage, spanning ETL, data lake, and data warehouse, handling hundreds of terabytes of imaging and clinical data.
  • Build CI/CD and deployment automation that lets a lean team ship quickly and safely.
  • Ensure systems handling PHI are HIPAA-compliant by design, with encryption, access controls, audit logging, and secure data handling throughout.
  • Build model inference pipelines for live and offline traffic, and support ML infrastructure alongside the ML team as needs arise.
  • Own large backend projects from design through deployment, leading technical design, driving quality through design reviews and testing, and helping set engineering best practices on a lean team.

QUALIFICATIONS

  • 5+ years as a software engineer, with a track record of delivering on time and at quality
  • Proficiency in a backend language (Go, Python, Java, or similar) and strong experience with cloud platforms and distributed architectures, particularly AWS
  • Strong experience designing and building backend infrastructure, including APIs, data pipelines, and services, that is reliable, scalable, and maintainable
  • Hands-on experience with schema design and data modeling
  • Experience building and integrating with external or third-party systems, including the networking and security concerns of connecting across organizational boundaries
  • Strong problem-solving skills and the ability to troubleshoot complex distributed systems
  • Experience shipping quickly under competing priorities, and comfort with the ambiguity of a lean team
  • Excellent communication skills and the ability to work cross-functionally with technical and non-technical stakeholders, including external customers and vendors

PREFERRED QUALIFICATIONS

  • Experience with healthcare integration standards and imaging systems (DICOM, DICOMweb, HL7, FHIR, PACS/RIS, IHE profiles)
  • Experience building and operating HIPAA-compliant systems, or handling PHI and healthcare security requirements
  • Experience with secure network integration, such as site-to-site VPNs, private connectivity, and onboarding enterprise or hospital customers alongside their IT teams
  • Experience with CI/CD tooling and infrastructure-as-code (Terraform, Docker, Kubernetes)
  • Experience with large-scale ETL, data lake, or data warehouse systems
  • Experience contributing to ML infrastructure or model inference pipelines
PythonJavaAWSTerraformDockerKubernetes
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