Heartflow is a medical technology company advancing the diagnosis and management of coronary artery disease, the #1 cause of death worldwide, using cutting-edge technology. The flagship product—an AI-driven, non-invasive cardiac test supported by the ACC/AHA Chest Pain Guidelines called the Heartflow FFR CT Analysis—provides a color-coded, 3D model of a patient’s coronary arteries indicating the impact blockages have on blood flow to the heart. Heartflow is the first AI-driven non-invasive integrated heart care solution across the CCTA pathway that helps clinicians identify stenoses in the coronary arteries (RoadMap™Analysis), assess coronary blood flow (FFR CT Analysis), and characterize and quantify coronary atherosclerosis (Plaque Analysis).

Our pipeline of products is growing and so is our team; join us in helping to revolutionize precision heartcare. Heartflow is a publicly traded company (HTFL) that has received international recognition for exceptional strides in healthcare innovation, is supported by medical societies around the world, cleared for use in the US, UK, Europe, Japan and Canada, and has been used for more than 500,000 patients worldwide. The Senior Test Engineer is a hands-on individual contributor on the Test Engineering team, responsible for end-to-end system testing, post-deployment verification, and the design and execution of automated test suites that protect the quality of our regulated SaMD products.

This role takes an AI-first approach to test automation — using AI-assisted tooling to accelerate test authoring, triage, and maintenance — while applying the rigor required of a medical device environment. The ideal candidate brings deep technical expertise in modern UI automation frameworks (Selenium and Playwright), experience writing test plans and validating tools under a QMS, and a track record of shipping high-quality software in a regulated SaMD context.

Responsibilities

Design, implement, and maintain end-to-end (E2E) automated test suites that exercise complete user workflows across UI, API, and back-end services. Apply an AI-first approach to test automation: leverage AI-assisted authoring, self-healing locators, intelligent test triage, and generative techniques to scale coverage and reduce maintenance burden. Lead post-deployment testing activities, including production smoke tests, monitoring-driven verification, and continuous validation against live environments.

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, Vitest 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, and contribute to contract testing where appropriate.

Requirements

into verifiable test cases with full traceability. 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 offshore test engineers for overlapping product areas.

Qualifications

5–8 years of experience in software test engineering, SDET, or quality engineering roles, with a strong hands-on automation background. Required: Direct experience testing Software as a Medical Device (SaMD) or other regulated medical device software.