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Senior Web Application Developer - Medical Imaging

San Francisco, California, United States

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.  

Why Join Us?

We are seeking a Senior Frontend Software Developer who is passionate about creating advanced web applications that revolutionize healthcare. If you have a strong background in frontend technologies and interactive image visualization, and are excited about creating intuitive and high performance web apps that leverage 3D visualization and deep learning algorithms, join our team at Heartflow.

As a Senior Web Application Developer, you will be a critical contributor, building innovative, high-performance internal web applications used to visualize and manipulate 2D/3D medical images. This is a chance to use your advanced expertise to directly impact patient outcomes, collaborating closely with backend algorithm teams, research scientists, and cross-functional partners.

Job Responsibilities

  • Core Development & Architecture:
    • Design, develop and maintain cloud-native infrastructure and applications for web visualization and editing tools using technologies like Three.js, WebGL, and TypeScript.
    • Integrate complex backend algorithms, CT image extraction services, and APIs to power web application functionality.
    • Drive the release, deployment, and monitoring of web application components in a large-scale system.
  • Quality & Best Practices:
    • Maintain adherence to high standards through code reviews and documentation.
    • Uphold engineering best practices, including robust testing and CI/CD methodologies.
    • Participate in supporting production applications alongside the team.
  • Collaboration & Leadership:
    • Partner with UX/UI designers to implement highly user-friendly interfaces.
    • Collaborate with Product and Process Engineering teams on planning, estimation, and requirement refinement through iterative prototyping.
    • Mentor teammates and contribute to the continuous improvement of engineering processes.

Core Technologies & Expertise

  • 3+ years of relevant experience with 2D and 3D rendering on web platforms (e.g., WebGL, Three.js, OpenGL).
  • 5+ years of experience in TypeScript and JavaScript.
  • 5+ years of experience with modern web frameworks (Vue.js preferred).
  • Expertise in cloud-native infrastructure and microservices (AWS or equivalent).
  • Excellent understanding of software development best practices: testing, CI/CD, and agile methodologies.
  • Comfortable refining requirements via iterative prototyping and development.
  • Excellent communication and collaboration skills.

Educational Requirements & Work Experience

  • BS in Computer Science or a related technical field + 8 years of relevant industry experience, including shipping and maintaining commercial web applications.
  • Or MS/PhD in Computer Science or related field + 6 years.
  • Or equivalent practical experience as a full-stack software engineer.

Bonus Points (Differentiators)

  • Prior experience in the medical device or other regulated industries.
  • Expertise in Medical Visualization and Volume Rendering.
  • Familiarity with medical imaging data standards (e.g., DICOM) and integration into web applications.
  • Familiarity with AWS services,  Python or modern C++.

A reasonable estimate of the base salary compensation range is $180,000 to $215,000, cash bonus, and equity. #LI-IB1 #LI-Hybrid

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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/. 

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