Heartflow Logo

Heartflow

Test Engineer III

Reposted 12 Days Ago
Be an Early Applicant
In-Office
San Francisco, CA
130K-160K Annually
Mid level
In-Office
San Francisco, CA
130K-160K Annually
Mid level
The Test Engineer III is responsible for automated testing of medical software, focusing on end-to-end system tests, tool validation, and ensuring compliance with medical device regulations.
The summary above was generated by AI

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 FFRCT 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 (FFRCT 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 Test Engineer III is a hands-on individual contributor on the Test Engineering team, responsible for executing and extending automated test coverage across our regulated SaMD products. This role focuses on end-to-end system testing and post-deployment verification, contributing to test plans and tool validation activities under the guidance of senior engineers. The Test Engineer III applies an AI-first approach to test automation — using AI-assisted tooling to accelerate authoring and triage — while operating with the rigor required of a medical device QMS environment. The ideal candidate is comfortable with modern UI automation frameworks (Selenium and Playwright), eager to grow their depth in regulated software testing, and motivated to ship high-quality software that supports patient care.

Responsibilities
  • Build and maintain automated end-to-end (E2E) tests covering complete user workflows across UI, API, and back-end services.
  • Apply AI-assisted test automation techniques — including AI-assisted authoring, self-healing locators, and AI-supported triage — to expand coverage and reduce maintenance overhead.
  • Execute post-deployment verification activities such as production smoke tests and monitoring-driven checks.
  • Contribute to test plans, test protocols, and test reports under the guidance of senior engineers, ensuring documentation meets QMS expectations.
  • Participate in tool validation activities for test infrastructure and automation tooling per internal procedures.
  • Implement and maintain UI test automation using Selenium, Vitest and Playwright; follow established framework patterns and contribute improvements.
  • Develop API-level tests using tools such as REST Assured, Postman, or Karate.
  • Translate requirements and user stories into clear, traceable test cases in partnership with engineers, product, and RA/QA.
  • Investigate test failures, file high-quality defect reports, and partner with developers to drive issues to resolution.
  • Help keep automated tests running reliably in CI/CD pipelines and respond promptly to pipeline breakages.
  • Provide test evidence and documentation to support audits, CAPAs, and regulatory submissions as requested.
Qualifications
  • 3–5 years of experience in software test engineering, SDET, or quality engineering roles, with a hands-on automation focus.
  • Experience testing Software as a Medical Device (SaMD) or other regulated medical device software.
  • Working familiarity with medical device QMS practices and applicable standards (e.g., ISO 13485, IEC 62304, ISO 14971, 21 CFR Part 820), including test documentation and traceability.
  • Proficiency with Selenium / WebDriver and Playwright, including writing stable, maintainable UI automation.
  • Hands-on experience contributing to E2E automation suites and test frameworks.
  • Exposure to authoring or maintaining test plans, protocols, and reports in a regulated environment.
  • Practical use of AI-assisted testing tools or techniques (e.g., AI-augmented test authoring, self-healing automation, LLM-supported triage).
  • Solid programming skills in at least one mainstream language used for automation (e.g., TypeScript/JavaScript, Python, Java, or C#).
  • Experience with API testing tools (REST Assured, Postman, Karate, or equivalent).
  • Familiarity with CI/CD systems (e.g., GitHub Actions, Jenkins, GitLab CI) and basic exposure to cloud environments such as AWS.
  • Strong debugging skills and a structured approach to investigating failures.
  • Clear written and verbal communication; able to document test designs and defects effectively.
  • Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
Desired
  • Exposure to RA/QA processes and supporting evidence collection for audits.
  • Experience testing ML/AI features, clinical workflows, or medical imaging products.
  • Experience validating visualizations such as 3D models, overlays, or measurement views.
  • Familiarity with non-functional / performance testing tools (e.g., k6, Locust, JMeter, Gatling).
  • Exposure to data-pipeline or microservices testing.

A reasonable estimate of the base salary compensation range is $130,000 to $160,000, bonus, and equity. #LI-IB1

Heartflow is an Equal Opportunity Employer. We are committed to a work environment that supports, inspires, and respects all individuals and do not discriminate against any employee or applicant because of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other status protected under federal, state, or local law. This policy applies to every aspect of employment at Heartflow, including recruitment, hiring, training, relocation, promotion, and termination.
 
Positions posted for Heartflow are not intended for or open to third party recruiters / agencies. Submission of any unsolicited resumes for these positions will be considered to be free referrals.
 
Heartflow has become aware of a fraud where unknown entities are posing as Heartflow recruiters in an attempt to obtain personal information from individuals as part of our application or job offer process. Before providing any personal information to outside parties, please verify the following: A) all legitimate Heartflow recruiter email addresses end with “@heartflow.com” and B) the position described is found on our careers site at www.heartflow.com/about/careers/. 

Similar Jobs

5 Days Ago
In-Office
65-75 Annually
Senior level
65-75 Annually
Senior level
3D Printing • Design
Lead and execute vehicle brake performance testing and validation, develop metrics and methodologies, support simulation, instrument vehicles, analyze data, resolve issues, and manage FMVSS testing and supplier/department negotiations. Frequent travel to test sites required.
Top Skills: CanalyzerIncaMatlab/SimulinkMdaMS OfficeRacelogic Vbox
6 Days Ago
In-Office
Los Angeles, CA, USA
121K-169K Annually
Senior level
121K-169K Annually
Senior level
Aerospace
Lead planning and execution of qualification and acceptance testing for space mechanisms and electromechanical systems across vibration, TVAC, shock, and EMI. Author test plans/procedures, design fixtures/GSE, operate data acquisition and environmental test equipment, analyze test data, drive anomaly resolution, coordinate with cross-functional teams, and maintain test records and quality traceability.
Top Skills: AccelerometersAutodesk InventorData Acquisition SystemsEmi/Emc TestingEncodersLoad CellsMatlabPythonThermal Vacuum (Tvac)ThermocouplesTurbomolecular PumpsVacuum PumpsVibration Tables
6 Days Ago
In-Office
121K-169K Annually
Senior level
121K-169K Annually
Senior level
Aerospace
Plan and execute rocket engine test campaigns at AFRL, including hardware integration, risk mitigation, post-test inspections, data review and engine performance analysis. Contribute to test-stand design/modifications, instrumentation troubleshooting, and schedule/budget inputs while upholding strict safety and quality standards for human spaceflight.
Top Skills: CadCreoLabviewMatlabPconProePythonWinplot

What you need to know about the Los Angeles Tech Scene

Los Angeles is a global leader in entertainment, so it’s no surprise that many of the biggest players in streaming, digital media and game development call the city home. But the city boasts plenty of non-entertainment innovation as well, with tech companies spanning verticals like AI, fintech, e-commerce and biotech. With major universities like Caltech, UCLA, USC and the nearby UC Irvine, the city has a steady supply of top-flight tech and engineering talent — not counting the graduates flocking to Los Angeles from across the world to enjoy its beaches, culture and year-round temperate climate.

Key Facts About Los Angeles Tech

  • Number of Tech Workers: 375,800; 5.5% of overall workforce (2024 CompTIA survey)
  • Major Tech Employers: Snap, Netflix, SpaceX, Disney, Google
  • Key Industries: Artificial intelligence, adtech, media, software, game development
  • Funding Landscape: $11.6 billion in venture capital funding in 2024 (Pitchbook)
  • Notable Investors: Strong Ventures, Fifth Wall, Upfront Ventures, Mucker Capital, Kittyhawk Ventures
  • Research Centers and Universities: California Institute of Technology, UCLA, University of Southern California, UC Irvine, Pepperdine, California Institute for Immunology and Immunotherapy, Center for Quantum Science and Engineering

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account