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Senior Software Engineer

Lead the technical direction of electronic prescribing in OncoEMR to improve cancer care.

Location
NY office
Compensation
Not disclosed
Level
senior
Type
full time · Hybrid

Posted by employer 1 week ago

First seen on Joblaze 6 days ago

Last verified on the company career page 19 hours ago

What you'll build

  • Lead technical design and delivery of electronic prescribing modernization
  • Write and review high-quality code across the stack
  • Guide the move from legacy workflows to modern frameworks
  • Build and test safety-critical prescribing workflows
  • Mentor engineers through code reviews and design feedback

Must have

  • 5–8 years of experience building and shipping production software
  • Experience building production software in a modern language
  • Full-stack web development experience
  • Led technical design and delivery of complex projects
  • Mentor and grow other engineers

Nice to have

  • Experience using AI coding tools
  • Experience building features powered by LLMs or AI agents
  • Experience in a regulated environment

Practical constraints

  • 3 office days set by you and your team

AI in the day-to-day

Experience using AI coding tools to build and test software.

Requirements

Experience
5–8 years

Not disclosed in this posting: compensation, visa sponsorship.

Benefits

Mental Well-being Tools Flexible Paid Time Off 401k Contribution Flexible Work Hours Financial Health Resources Parental benefits

Joblaze summary

The Senior Software Engineer at Flatiron Health focuses on modernizing electronic prescribing within the OncoEMR system, leading the technical design and implementation of new workflows. Proficiency in C#, VB.NET, and React is essential, along with experience in full-stack development and mentoring other engineers. This role is ideal for someone with 5-8 years of experience in software development and a background in managing complex projects. The position offers a chance to work collaboratively with cross-functional teams to enhance cancer care through technology.

Joblaze insights

  • Listed 6 days ago — first seen on Joblaze October 31, 2026. Last confirmed on Flatiron Health's careers page November 6, 2026.
  • This exact title is also open at 2 other locations at Flatiron Health: London office, London office.
  • React appears in 70.9% of 223 comparable senior fullstack roles in United States; relational databases appears in 0.9% of 223 comparable senior fullstack roles in United States.

Quick facts

Is the Senior Software Engineer role remote?
It's hybrid — Flatiron Health expects some on-site time in NY office.
How much experience is required?
5–8 years of relevant experience for this Senior Software Engineer role.
Where is the role based?
Flatiron Health is hiring for this position in NY office.
What's the tech stack?
Joblaze extracted these technologies from the posting: .NET, C#, REST APIs, React, VB.NET, relational databases.
What seniority level is this role?
Flatiron Health targets senior candidates for this position.
Is this full-time or contract?
Full-time for this Senior Software Engineer role at Flatiron Health.

From the original posting

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. Are you ready to be the next changemaker in cancer care?

What You'll Do

In this role you will lead the technical design and delivery of our electronic prescribing (eRx) modernization, including upgrading to the latest standards and actively partnering with key vendors for verification. You will help break large, ambiguous problems into clear plans, tickets, and milestones, and keep the team aligned on scope, risks, and timelines. In addition you will:

  • 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 that help us meet ONC certification and DEA/EPCS requirements.
  • Mentor engineers through code reviews, pairing, and design feedback, and help shape how the team works, including how we use AI tools across the development lifecycle.
  • At the end of your first year, success would mean having led eRx work from design through rollout, with a team that ships reliably and clinicians who can prescribe with less friction.

Who You Are

You're a kind, passionate and collaborative problem-solver who values the opportunity to think beyond the way things are. In addition, you're a thoughtful, empathetic communicator with 5–8 years of experience building and shipping production software, including technical leadership of a project or team.

  • You have experience building production software in a modern language (e.g., C#, Java, Python, or TypeScript) and are comfortable working in a large, long-lived codebase.
  • You are a full-stack web developer with experience building both front-end interfaces (e.g., React) and back-end services, including REST APIs and relational databases.
  • You have led the technical design and delivery of complex, cross-team projects from planning through rollout, and can make and communicate architecture tradeoffs.
  • You mentor and grow other engineers through code review, pairing, and thoughtful feedback.
  • You are a self-starter who is comfortable working with ambiguity and breaking large problems into clear steps.
  • You are a team-player who gives and receives feedback openly and enjoys working cross-functionally.
  • You are motivated by our mission and want your work to have a direct impact on people with cancer, in software where safety and accuracy matter.

Extra credit

  • You have experience using AI coding tools (e.g., Claude Code or Cursor) to build and test software, and a point of view on what works well.
  • You have experience building features powered by LLMs or AI agents, or evaluating AI output for quality and safety.
  • You have experience in a regulated environment (e.g., ONC certification, HIPAA, or DEA/EPCS) and are interested in continuing that kind of work.

Where You'll Work

In this hybrid role, you’ll have a defined work location that includes work from home and 3 office days set by you and your team. For more information on our approach to hybrid work, please visit the how we work website.

Standard company text repeated across Flatiron Health's postings is omitted here.

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