About Circadia Health
Circadia Health is a growth-stage healthcare AI company on a mission to prevent avoidable hospitalizations and transform senior-care operations. Our Circadia Intelligence Platform combines:
Contactless sensing that monitors respiration and motion with medical-grade accuracy
Native predictive models that detect 85% of preventable adverse events several days in advance
Enterprise integrations that operationalize predictions directly inside EHR, care-coordination, billing, and compliance workflows
Today, our technology touches 40,000+ post-acute patients daily across skilled-nursing, home-health, and home-care networks. We are backed by leading healthcare and AI investors and headquartered in El Segundo, CA.
What you'll own
- Test strategy and planning. Author test plans for new features, releases, and customer deployments — defining scope, risk-based prioritization, entry/exit criteria, environments, and data requirements — so that "tested" means the same thing to Engineering, Clinical, and Quality.
- Rigorous, exhaustive test case design. Build test suites that cover the platform's full behavior surface: boundary conditions, failure-mode handling, degraded-network behavior from facilities we don't control, malformed HL7 v2 and FHIR payloads, timezone and identity edge cases across EHR integrations (PointClickCare, Homecare Homebase, WellSky), and the alert-delivery paths where reliability matters most.
- Compliance-grade test reporting. Write comprehensive, detailed test reports and verification & validation documentation suitable for our Design History File, regulatory submissions (510(k)), and ISO 13485 / FDA QMSR audits — including requirements-to-test traceability matrices, defect trending, and evidence packages, in partnership with our Design Quality team.
- Automation and scripting. Build and maintain automated regression, API, and UI test suites in Python (PyTest) against our FastAPI services and React applications, integrated into CI/CD so every merge to production runs the full safety net. Script the tooling — test data generation, environment setup, synthetic device telemetry — that makes thorough testing fast.
- Regression protection. Own the release-readiness signal: a regression suite the team trusts, flaky-test triage, and a clear verdict on every release candidate.
- Quality culture. Champion testability across the engineering org — reviewing designs for verifiability, partnering with engineers on test coverage, and reinforcing quality as a property of how we build.
How success is measured
- Release quality: every release candidate ships with a clear, evidence-backed readiness verdict.
- Regression suite coverage and reliability: high coverage of critical paths, low flake rate, trusted by the team as a release gate.
- Audit readiness: test documentation accepted into the DHF and regulatory submissions without rework.
- Release velocity: automation reduces, not adds to, time from merge to production.
Required Qualifications
- 5+ years in software QA, SDET, or test engineering roles, with ownership of quality for at least one significant production system
- Demonstrated experience authoring formal test plans and designing systematic, exhaustive test cases (boundary analysis, equivalence partitioning, risk-based and negative testing)
- Experience producing detailed test reports and V&V documentation in a medical device, healthcare, or other highly regulated environment (FDA, ISO 13485, IEC 62304, or comparable)
- Strong Python scripting and hands-on automation experience with PyTest or similar frameworks, including API testing and UI automation (Playwright, Selenium, or equivalent)
- Experience testing integrations with third-party systems you do not control
- Strong SQL and comfort validating data across relational databases and warehouses
- Experience integrating automated tests into CI/CD pipelines
Preferred
- Software as a Medical Device (SaMD) verification, IEC 62304 software lifecycle documentation, or direct contribution to a 510(k) or CE submission
- Healthcare data and integration testing: HL7 v2, FHIR, ADT feeds, EHR vendor systems
- HIPAA / SOC 2 environments and sound PHI handling in test data
- Performance, load, or telemetry-ingestion testing at IoT scale
- Significant open source, systems that outlived your tenure, or a high-bar engineering background
Skills Required
- 5+ years of experience in software QA, SDET, or test engineering roles, including ownership of quality for a significant production system
- Experience authoring formal test plans and designing systematic, exhaustive test cases using boundary analysis, equivalence partitioning, risk-based testing, and negative testing
- Experience producing detailed test reports and verification and validation documentation in a medical device, healthcare, or highly regulated environment
- Experience with FDA, ISO 13485, IEC 62304, or comparable regulated quality standards
- Strong Python scripting and hands-on automation experience with PyTest or similar frameworks
- Experience with API testing and UI automation using Playwright, Selenium, or equivalent tools
- Experience testing integrations with third-party systems that the organization does not control
- Strong SQL skills and ability to validate data across relational databases and data warehouses
- Experience integrating automated tests into CI/CD pipelines
- Experience with Software as a Medical Device verification, IEC 62304 software lifecycle documentation, or contribution to a 510(k) or CE submission
- Experience testing healthcare data and integrations, including HL7 v2, FHIR, ADT feeds, or EHR vendor systems
- Experience working in HIPAA or SOC 2 environments and handling PHI in test data
- Experience with performance, load, or telemetry-ingestion testing at IoT scale
- Significant open-source experience, long-lived systems experience, or a high-bar engineering background
What We Do
Circadia Health helps reduce preventable rehospitalizations and save lives across the post-acute care continuum. Our AI-powered early detection system combines proprietary sensor technology – the Circadia C200 System (FDA-cleared) for contactless respiratory, heart rate, and motion monitoring – with EHR data and care coordination. We are venture-backed and in a rapid growth stage. Our US headquarters is in Los Angeles, and we have just opened an office in NYC.
Why Work With Us
We fuse hardware, software, data science, and clinical services to provide a full-stack virtual care delivery model across SNFs and Home. We are a team of designers, engineers, clinicians, and scientists.









