Senior Software Engineer at Flatiron Health | NY, US | Rezi

Senior Software Engineer at Flatiron Health

Senior Software Engineer

Flatiron Health · NY, US

1 weeks ago

Senior Software Engineer

Flatiron Health · NY, US

8 days ago
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About the Role

Reimagine the infrastructure of cancer care within a community that values integrity, inspires growth, and is uniquely positioned to create a more modern, connected oncology ecosystem. We're looking for a Senior Software Engineer to lead the technical direction of electronic prescribing in OncoEMR, to help us accomplish our mission to improve and extend lives by learning from the experience of every person with cancer.

Responsibilities

  • Lead the technical design and delivery of electronic prescribing (eRx) modernization, including upgrading to the latest standards and partnering with key vendors for verification.
  • Break down large, ambiguous problems into clear plans, tickets, and milestones.
  • Keep the team aligned on scope, risks, and timelines.
  • Write and review high-quality code across the stack in C#, VB.NET, and React, setting the bar for testing, reliability, and maintainability.
  • Guide the phased move from legacy WebForms and VB.NET workflows to React micro-frontends and .NET services, balancing modernization with the day-to-day needs of clinicians.
  • Partner with product, design, QA, and clinical oncology experts to turn prescriber and pharmacist workflows into thoughtful technical solutions.
  • Build and test safety-critical prescribing workflows to meet ONC certification and DEA/EPCS requirements.
  • Mentor engineers through code reviews, pairing, and design feedback.
  • Shape how the team works, including the use of AI tools across the development lifecycle.

Requirements

  • 5–8 years of experience building and shipping production software, including technical leadership of a project or team.
  • Experience building production software in a modern language (e.g., C#, Java, Python, or TypeScript).
  • Comfortable working in a large, long-lived codebase.
  • Experience building both front-end interfaces (e.g., React) and back-end services, including REST APIs and relational databases.
  • Led the technical design and delivery of complex, cross-team projects from planning through rollout.
  • Ability to make and communicate architecture tradeoffs.
  • Mentors and grows other engineers through code review, pairing, and thoughtful feedback.
  • Self-starter comfortable working with ambiguity and breaking large problems into clear steps.
  • Team-player who gives and receives feedback openly and enjoys working cross-functionally.
  • Motivated by the mission to have a direct impact on people with cancer, in software where safety and accuracy matter.
  • Experience using AI coding tools (e.g., Claude Code or Cursor) to build and test software.
  • Experience building features powered by LLMs or AI agents.
  • Experience evaluating AI output for quality and safety.
  • Experience in a regulated environment (e.g., ONC certification, HIPAA, or DEA/EPCS).

Skills

  • C#
  • VB.NET
  • React
  • REST APIs
  • Relational databases
  • AI coding tools
  • LLMs
  • AI agents

Location

  • Remote
  • Office

Work Type

  • Hybrid
  • Full-time

Experience Level

  • Senior
  • 5-8 years

Benefits

  • Work/life autonomy via flexible work hours and flexible paid time off
  • Comprehensive compensation package
  • 401(k) contribution
  • Financial health resources including 1:1 financial advice
  • Mental well-being tools and services
  • Parental benefits and policies including family-building care and generous leave
  • Path to parenthood programs supporting fertility, adoption and surrogacy
  • Travel support for safe healthcare services

About the Company

  • Flatiron Health is reimagining the infrastructure of cancer care within a community that values integrity, inspires growth, and is uniquely positioned to create a more modern, connected oncology ecosystem.
  • Our mission is to improve and extend lives by learning from the experience of every person with cancer.