Software Engineer

flatironhealth· Engineering
Apply Now ↗
📍 Tokyo office

About this role

We’re looking for a Software Engineer 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?

Flatiron Health is a healthtech company using data for good to power smarter care for every person with cancer, around the world. Flatiron partners with cancer centers in the US, Europe and Asia to transform patients’ real-life experiences into real-world evidence and create a more modern, connected oncology ecosystem. Our multidisciplinary teams include oncologists, data scientists, software engineers, epidemiologists, product experts and more. Flatiron Health is an independent affiliate of the Roche Group.

What You'll Do

In this role, you will design, develop, and deploy robust software solutions to securely access, transfer, and transform raw patient data into high-quality, ready-to-use real-world evidence and data products. You will collaborate with Flatiron colleagues globally and work day-to-day with oncologists, clinicians, product leaders, quantitative scientists, and customers to understand their challenges and build technological solutions. In addition, you will: 

  • Develop and maintain various software solutions, including web applications and data processing pipelines, that meet the needs of a rapidly changing business.
  • Construct scalable, and automated pipelines with observability and reliability in mind.
  • Devise creative solutions to navigate tough business, security, and data privacy challenges.
  • Apply software engineering rigor to data, including writing comprehensive unit tests and ensuring data quality across complex transformations.
  • Be prepared to deploy solutions at hospital partner premises.

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 have 3 years of experience with software development using programming languages, such as C#, Java and Python
  • You have 3 years of experience with web technologies (such as HTML, CSS and JavaScript) and backend frameworks (such as ASP.NET Core and Spring MVC)
  • You have experience with relational database systems, such as PostgreSQL and MySQL
  • You have 1 year of experience with Linux system administration
  • You have experience working with infrastructure as code (IaC)
  • You have business-level proficiency in both Japanese and English, and are comfortable having discussions with hospital partners/vendor companies in Japanese
  • You are willing to travel to hospital partner premises to perform server operations when needed (the company will cover travel and meal expenses during the business trip)

Optional

  • You have experience with developing or operating EHR systems or department systems
  • You have experience with managing server hardware and network devices
  • You have experience with development on AWS

Who We Are

Our people are at the centre of everything we do. We strive to foster a culture where our teammates feel equipped and empowered to make meaningful contributions with confidence, compassion, and clarity. 

Statutory Benefits 

  • Employment Term: Indefinite
  • Probationary Period: 6 months
  • Work Location: Tokyo, Japan
  • Work Hours: The normal work hours are 9:00 - 18:00. This role is eligible for the flex-time system.
  • Holidays: Saturday, Sunday and public holidays 
  • Social Insurance: Health, Pension, Employment and Workers' Accident
  • Smoking: No smoking allowed in the office, smoking area is in the building

Frequently Asked Questions

Is the salary disclosed for the Software Engineer position at flatironhealth?
The salary for this Software Engineer role at flatironhealth is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Software Engineer position at flatironhealth located?
This Software Engineer role at flatironhealth is based in Tokyo office. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Which team or department does the Software Engineer at flatironhealth belong to?
This Software Engineer position is part of the Engineering department at flatironhealth. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Software Engineer position at flatironhealth?
Click the "Apply Now" button on this page. You will be redirected to flatironhealth's official application portal hosted on greenhouse where you can submit your application directly.
When was the Software Engineer job at flatironhealth posted?
This Software Engineer position at flatironhealth was posted on Apr 28, 2026. Apply as soon as possible — early applications are often reviewed first.
Software Engineer
flatironhealth
Apply for this role ↗

You'll be redirected to flatironhealth's official application page on Greenhouse.