Build and own scalable healthcare data applications, including Snowflake data pipelines, data-sharing solutions, backend services, and React interfaces. Use Python, PySpark, Airflow, Prefect, Terraform, Docker, and observability tools to deliver robust, compliant systems. Collaborate with oncologists, product leaders, and data scientists, translate regulatory requirements into technical solutions, and mentor junior engineers.
We're looking for a Senior 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.
We're looking for an experienced software engineer to join the Healthcare Data Products team. Our mission is to build scalable pipelines and platforms that transform raw clinical data into actionable insights, and to empower our clients to do the same. Whether it's managing a 100+ source data lake or architecting Snowflake-native sharing solutions, your work directly impacts how cancer data is utilized across the industry.
What You'll Do
As a Senior Engineer on the HC Data Products team, you will own the lifecycle of high-scale data applications. From our Snowflake data lake to customer-facing data retrieval interfaces, you will build systems that are robust, compliant, and performant. In addition, you'll:
Who You Are
You're a kind, collaborative, and passionate problem-solver who thrives at the intersection of software engineering and data platform architecture.
Extra Credit
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.
Preferred Primary Location: London office
The annual pay range reflected above for this position is based on the preferred primary location of the role which is listed in the job description. Salary ranges for other locations vary from the range reflected above. Base pay offered may vary depending on job-related knowledge, skills, and experience. An annual bonus and equity may be provided as part of the compensation package, in addition to a full range of medical, financial, and/or other benefits, dependent on the position offered.
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.
We're looking for an experienced software engineer to join the Healthcare Data Products team. Our mission is to build scalable pipelines and platforms that transform raw clinical data into actionable insights, and to empower our clients to do the same. Whether it's managing a 100+ source data lake or architecting Snowflake-native sharing solutions, your work directly impacts how cancer data is utilized across the industry.
What You'll Do
As a Senior Engineer on the HC Data Products team, you will own the lifecycle of high-scale data applications. From our Snowflake data lake to customer-facing data retrieval interfaces, you will build systems that are robust, compliant, and performant. In addition, you'll:
- Architect & Scale: Design and maintain complex data pipelines using Python, PySpark, Prefect, and Airflow to ingest data from hundreds of sources into Snowflake.
- Innovate Infrastructure: Transition our data delivery models toward modern Snowflake-native data sharing and high-performance Parquet extractions.
- Full-Stack Ownership: Support our EHR application and data export features by working across the stack, from Python backends to React frontends.
- Modernize Tooling: Use Terraform (via Spacelift), Docker, and GitLab CI/CD to ensure our infrastructure is code-driven, while leveraging Datadog and Metaplane for end-to-end system and data observability.
- High-Velocity Dev-Ex: Leverage cutting-edge AI-assisted development tools likeCursor and Claude Code to streamline workflows and focus on solving complex oncology data challenges.
- Collaborate: Partner with oncologists, product leaders, and data scientists to translate complex product and regulatory requirements into elegant technical solutions.
Who You Are
You're a kind, collaborative, and passionate problem-solver who thrives at the intersection of software engineering and data platform architecture.
- The Experience: You have 4+ years of professional experience building scalable, production-grade software.
- The Stack: You are highly proficient in Python and have a deep understanding of relational databases (Snowflake preferred).
- The Mindset: You have a nose for value and empathy for your internal and external customers. You proactively identify problems that have a high impact on the business.
- The Communicator: You can explain complex data flows to non-technical stakeholders and mentor junior engineers on best practices.
- The Academic: You hold a degree in Computer Science or a related field (or have equivalent foundational experience).
Extra Credit
- Modern Data Stack: Experience with Airflow, Prefect, PySpark, or Terraform.
- Front-End Flair: Experience with React or similar JS frameworks for building data-heavy internal tools.
- Cloud Native: Hands-on experience with AWS services (S3, EMR, EC2).
- Healthcare Context: Familiarity with healthcare data domains (e.g., Clinical, Financial, or Research) and an understanding of provider workflows within an EHR.
- Open Source: You contribute to the community or have a passion for building developer tools.
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.
Preferred Primary Location: London office
The annual pay range reflected above for this position is based on the preferred primary location of the role which is listed in the job description. Salary ranges for other locations vary from the range reflected above. Base pay offered may vary depending on job-related knowledge, skills, and experience. An annual bonus and equity may be provided as part of the compensation package, in addition to a full range of medical, financial, and/or other benefits, dependent on the position offered.
Flatiron Health London, England Office
Flatiron Health London Office Office
Our London office at High Holborn House offers modern, dedicated workspaces designed for both focused, heads down work and collaboration. Just a five-minute walk from Holborn Tube Station, it’s easily accessible and surrounded by a variety of cafes, restaurants, and green spaces.
Similar Jobs at Flatiron Health
Healthtech • Software • Biotech • Pharmaceutical
Design and build complex, business-critical data pipelines and ML/LLM-powered clinical extraction systems. Collaborate with clinicians, product, and global engineering teams to scale solutions, maintain quality and security, and help grow the European engineering organization while developing UK healthcare domain knowledge.
Top Skills:
AirflowAWSC#DatabricksDbtDeep LearningLlmPrefectPythonRaySnowflakeSparkSQL
Healthtech • Software • Biotech • Pharmaceutical
Design, build, automate, and operate cloud-native network infrastructure to ensure reliability, performance, and observability. Drive test-driven infrastructure changes, support office networking, participate in on-call rotations, incident escalations, code/config reviews, and produce documentation and playbooks for the engineering organization.
Top Skills:
AnsibleAruba WlanAWSAws Landing ZoneAws Transit GatewayAzureDatadogDockerFirewall ConfigurationGCPKubernetesNetwork SegmentationObserviumPalo Alto FirewallRoutingTerraformVpn
Healthtech • Software • Biotech • Pharmaceutical
Design and build complex, business-critical data pipelines and ML/LLM-powered clinical extraction systems. Collaborate with clinicians, product, and global engineering teams to scale solutions, maintain quality and security, and help grow the European engineering organization while developing UK healthcare domain knowledge.
Top Skills:
AirflowAWSC#DatabricksDbtDeep LearningLlmPrefectPythonRaySnowflakeSparkSQL
What you need to know about the London Tech Scene
London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.
