Senior Software Engineer - Full Stack
Flatiron Health London office Posted 18 July 2026
PharmaBiotechQuality Assurancepythonemainformaws
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.
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