Senior Software Engineer - Full Stack

We’re looking for a data-oriented Full Stack 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

• This role will design and develop technology in partnership with our global software engineering teams in the US, UK, Germany, and Japan.
• This role will work day‑to‑day with oncologists, clinicians, product leaders, quantitative scientists, 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 the UK, including data sources, security, privacy, information governance requirements, and emerging trends.

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 4‑8 years of relevant professional experience.
• You are excited to work in a dynamic, fast‑paced environment, think creatively and are comfortable being scrappy to get the job done.
• 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 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.

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.