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Senior Software Engineer - Full Stack

Flatiron Health|Health Tech
London office
Engineering

Job Description

We’re looking for a data-oriented Senior Software Engineer - Full Stack 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.

The Team

You will be part of The Trusted Research Environment (TRE) team, which is our secure computing environment for global data delivery that allows researchers to safely and securely access deidentified patient data for oncology research. The TRE team is responsible for developing, maintaining, and scaling Flatiron’s integrations, configurations, compliance, and data delivery with the TRE. This team has high customer impact and visibility as we continue to refine existing capabilities and add new functionality.

What You'll Do

Based in our London office, you will design and develop technology in partnership with our global software engineering teams in the US, UK, Germany, and Japan. Additionally, this role will work with oncologists, clinicians, product leaders, data analysts, and customers to understand their challenges and how technology can help solve them.

  • Contribute to shaping the direction of team roadmaps and technology development
  • Help build our European engineering teams and company culture as we grow
  • Devise creative solutions for technical and business challenges
  • Rapidly iterate on products while maintaining engineering practices that ensure quality and security
  • Work with complex data pipelines using a variety of data processing tools
  • Bring or develop a deep knowledge of healthcare in UK, including data sources, security, privacy, information governance requirements, and emerging trends

Tech Stack

  • Python
  • React
  • Airflow
  • Snowflake
  • AWS Infrastructure

Who You Are

You're a kind, passionate and collaborative problem-solver who values the opportunity to think beyond the way things are. You're excited by the prospect of working on difficult and meaningful problems each day. You seek and give candid feedback, and value the chance to make an important impact on cancer patients and society.

  • You’re a full-stack software engineer with 4+ of relevant professional experience
  • You are excited about working in a passionate, technology-driven culture that encourages both innovation and business impact
  • You have experience with agile development environments using object-oriented programming languages (e.g. Python, Java, C#, SQL) and are willing to learn new technologies as needed
  • You have experience working with cloud platforms like AWS
  • You have recent front-end development experience, preferably with React
  • You are an expert in your domain area, and a good partner with product teams
  • You understand the purpose of “boring” technology (as described in this blog post) and are willing to use the right tools to get the job done
  • You can collaborate and easily explain technical terms to a non-technical, highly sophisticated audience; you have superior communication skills
  • You have a nose for value and empathy for your customers
  • You are comfortable with ambiguity and always willing to teach and learn
  • You are fluent in English

Optional

  • You have experience with data warehousing solutions like Snowflake
  • You have experience working in healthcare in the UK
  • You hold a bachelors, masters, and/or Ph.D. in computer science or a related field
  • You have experience in machine learning, data engineering, infrastructure, devops, or security engineering

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.

About Flatiron Health

First seen: May 3, 2026
Last updated: May 24, 2026