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Senior Test Engineer

Heartflow· Software Engineering
Apply on company site
San Francisco, CA$165k - $205kFull-timePosted 1mo ago

About the role

Hands-on contributor driving end-to-end system testing, post-deployment verification, and automated test suite development for HeartFlow's regulated SaMD products, spanning ML/AI pipelines, UI, web viewers, and reporting layers; emphasizes AI-first automation, QA under QMS, and offshore/contractor test engineer coordination.

Responsibilities

  • Design, implement, and maintain end-to-end (E2E) automated test suites that exercise complete user workflows across UI, API, and back-end services, executing against the architecture and standards set by the Test Architect.
  • Champion an AI-first automation strategy. Implement and scale test coverage using AI-assisted authoring and generative test planning derived from AI-generated requirements, while leveraging intelligent triage to minimize maintenance overhead.
  • Build and own a baseline suite of daily smoke/build-acceptance tests covering core workflows across development and staging environments, closing a current gap where automated testing only runs during formal V&V cycles.
  • Lead post-deployment testing activities, including production smoke tests, monitoring-driven verification, and continuous validation against live environments.
  • Design and implement golden-dataset regression tests for HeartFlow's ML pipeline services, validating algorithmic outputs against curated reference cases.
  • Build automated test coverage for HeartFlow's WebGL-based 3D Web Viewer and Clinical/CaseOps UIs using Playwright, including visual regression for 3D model rendering and view generation.
  • Author clear, traceable test plans, test protocols, and test reports that meet the documentation expectations of a regulated medical device QMS.
  • Perform tool validation for test infrastructure and automation tooling in accordance with internal QMS procedures and applicable standards.
  • Build and maintain UI automation using Selenium and Playwright; extend frameworks for stability, parallelism, and reuse across product lines.
  • Collaborate with software engineering teams to standardize API-level and integration tests using tools such as REST Assured, Postman, or Karate, including testing for DICOM ingestion and HL7 output validation at the hospital/cloud boundary.
  • Partner with software engineers, product managers, and RA/QA to translate requirements into verifiable test cases with full traceability, contributing to closing the current gap between code commits and Ketryx-generated audit evidence.
  • Triage and root-cause failures across complex distributed systems; drive defects to resolution and contribute to defect-prevention initiatives.
  • Contribute to CI/CD pipelines so that automated tests run reliably and provide fast, actionable feedback to engineering teams.
  • Support quality-related audits, CAPAs, and regulatory submissions by providing test evidence, traceability, and documentation.
  • Support and coordinate offshore/contractor test engineers for overlapping product areas, helping ramp them on HeartFlow's systems and test standards.
  • Mentor the Test Engineer role and contribute to hiring as the team scales.

Qualifications

  • 5–8 years of experience in software test engineering, SDET, or quality engineering roles, with a strong hands-on automation background.
  • Direct experience testing Software as a Medical Device (SaMD) or other regulated medical device software.
  • Working knowledge of medical device QMS practices and applicable standards (e.g., ISO 13485, IEC 62304, ISO 14971, 21 CFR Part 820), including test documentation, traceability, and tool validation.
  • Strong proficiency with Selenium / WebDriver and Playwright, including framework design, page-object patterns, and stability/flake reduction techniques.
  • Demonstrated experience designing and maintaining E2E automation frameworks that cover complete workflows and system integrations.
  • Experience authoring test plans, protocols, and reports in a regulated environment, with attention to traceability between requirements, test cases, and evidence.
  • Practical experience with AI-assisted testing tools and techniques (e.g., AI-augmented test authoring, self-healing automation, LLM-driven test generation or triage).
  • Solid programming skills in Python and at least one additional mainstream language used for automation (e.g., TypeScript/JavaScript, Java, or C#).
  • Experience with API testing tools (REST Assured, Postman, Karate, Pact.io or equivalent) and basic familiarity with contract testing concepts.
  • Experience integrating automated tests into CI/CD pipelines (e.g., GitHub Actions, Harness) and working with cloud environments such as AWS.
  • Strong analytical and debugging skills across distributed systems, with a structured approach to root-cause analysis.
  • Excellent written and verbal communication skills; able to clearly document test designs, defects, and risk.
  • Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.

Skills

Required:End-to-end automated testingUI automationAI-assisted testingPythonTypeScript/JavaScript or Java or C#

Benefits

  • bonus
  • equity
Last updated Sep 14, 2026. Interested? Apply on the company site.

About Heartflow

Decisive Coronary Care

Heartflow’s vision is to transform CAD from the leading cause of death into a disease that can be managed for life.

CCTA ResourcesRoadmap AnalysisFFRCT AnalysisPlaque AnalysisHeartflow OneHeartflow One PlatformMeasurable Impact
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