Full-Time

Senior Data Scientist

Flatiron Health

Flatiron Health

1,001-5,000 employees

Cancer-focused EHR platform for real-world data

No salary listed

London, UK

In Person

London office; on-site role.

Bachelor's, Master's

Category
Data & Analytics (1)
Required Skills
LLM
Python
SQL
Machine Learning
Pandas
Data Analysis

Get referred to Flatiron Health

See people who can refer or advise you

Requirements
  • You have a BS or MS from a technical field of study (e.g. data science, engineering, computer science, mathematics, applied statistics, health economics, etc.) with 5+ years of relevant experience.
  • You have strong data empathy and enjoy the process of exploring and developing a deep understanding of new data sources.
  • You’re impact-oriented, and care deeply about creating real change for customers, users, and ultimately patients.
  • You have some experience working with ML and LLMs. You understand how machine learning and AI systems are measured and can analyze an existing system to understand the quality of its output, assess where improvements are needed, and communicate the impact of those improvements to stakeholders.
  • You have collaborated with other technical team members in a production development environment using formal version control, Python (including data manipulation in pandas, polars or a similar framework), and SQL.
  • You have an understanding of key statistical concepts and the ability to generate and interpret statistical analyses.
  • You are a clear and confident communicator who can break down complex data analyses to tell a compelling story.
  • You are a self-starter with a strong sense of ownership who can independently prioritize and who enjoys coming up with innovative solutions to challenging problems.
  • You are passionate about our mission to improve cancer care through data and technology.
  • You enjoy working in a fast-paced startup-like environment.
Responsibilities
  • Work closely with a cross-functional team (e.g., product managers, software engineers, oncologists, clinical data specialists) to develop new real-world data products.
  • Establish strong relationships with key stakeholders at our partner sites and collaborate with them to develop a deep understanding of their data and enable seamless data transfers.
  • Become a subject matter expert in the format, quality, content and sources of data from our partners; develop validation approaches to ensure consistency of these sources.
  • Conduct exploratory analyses to define source data ingestion approaches that meet our quality bar; define business logic to transform new source data into Flatiron’s common data model.
  • Apply and validate LLM-based approaches to process unstructured electronic health record data at scale to enhance our real-world data products.
  • Collaborate with software engineers to design, implement and automate scalable data pipelines, utilising internal or off-the-shelf external AI tools.
Desired Qualifications
  • You have prior experience in healthcare.
  • You have experience working in DBT, Snowflake or are excited to learn.

Flatiron Health focuses on cancer care with a specialized Electronic Health Record (EHR) platform. It helps community oncologists, academic institutions, hospitals, life sciences researchers, and regulatory bodies manage patient information, share data, and run real-world data-driven studies. The product works by providing a cancer-specific EHR and real-time data integration that connects various stakeholders to enable smarter research and better patient outcomes. It differentiates itself through its narrow focus on oncology, real-world data capabilities, and collaboration across providers, researchers, and regulators, supported by a strong emphasis on data quality (e.g., recognition like the American Cancer Society Data Impact Award). The company aims to improve cancer care and accelerate research by turning real-world data into actionable insights and enabling evidence generation for new treatments.

Company Size

1,001-5,000

Company Stage

Acquired

Total Funding

$313.1M

Headquarters

New York City, New York

Founded

2012

Get referred to Flatiron Health

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • Abbott and Natera integrations expanded OncoEMR workflow lock-in in March and November 2025.
  • ASCO 2026 featured 49+ acceptances, signaling strong scientific credibility and customer traction.
  • Nathan Hubbard became CEO on August 6 2025, aligning commercialization with Roche's strategy.

What critics are saying

  • Paradigm bought Flatiron's clinical research business on December 4 2025, shrinking core revenue.
  • Headcount fell to 1,550 by March 2026, down 23.8% from 2023.
  • Tempus, IQVIA, and ConcertAI attack Flatiron's data moat with faster AI products.

What makes Flatiron Health unique

  • Roche-backed Flatiron spans 1,600 sites, 4,700 providers, and 5M+ patient journeys.
  • VALID framework, published April 20 2026, makes AI-extracted oncology data auditable.
  • Flatiron Telescope, launched May 19 2026, turns natural-language queries into cohort answers.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Work/life autonomy via flexible work hours and flexible paid time off

Generous parental leave (16 weeks for either parent)

Transition back to work program following parental leave

Child and caregiver travel benefits for new parents

Backup child care

Weekly meditation sessions

Flatiron-sponsored fitness classes

Weekly massages and manicures available onsite (employee funded)

Growth & Insights and Company News

Headcount

6 month growth

-1%

1 year growth

0%

2 year growth

-1%
Business Wire
May 21st, 2026
Flatiron Health presents 25+ AI-powered cancer research studies at ASCO 2026

Flatiron Health has announced 25-plus research acceptances at the American Society of Clinical Oncology Annual Meeting, taking place from 29 May to 2 June 2026 in Chicago. The presentations include 14 Flatiron-authored posters covering digital twin modelling, physician adoption of clinical trials and recurrence risk prediction. The announcement follows the launch of Flatiron Telescope, a multi-agent adaptive analytics platform designed to help life sciences teams identify patients faster and generate oncology insights on demand. The platform will be demonstrated at the company's booth. Research highlights include digital twin modelling for treatment prediction in non-small cell lung cancer, large-language model analysis of how clinical trial findings translate to practice, and real-world treatment patterns in platinum-resistant ovarian cancer. The work spans advanced AI capabilities and real-world evidence validation across multiple cancer types.

Business Wire
May 19th, 2026
Flatiron Health launches AI platform that delivers oncology insights in minutes

Flatiron Health has launched Flatiron Telescope, an AI-powered platform that enables life sciences teams and researchers to generate oncology insights in minutes using natural language queries. The platform translates complex inclusion and exclusion criteria into patient cohorts without requiring coding skills. Built on over 15 years of longitudinal data from more than 4,700 providers across 1,600 sites, Flatiron Telescope covers roughly two in five cancer patients and spans over 5 million patient journeys across the US, UK, Germany and Japan. The platform's multi-agent adaptive analytics engine allows users to dynamically stratify cohorts by biomarkers, treatment history and lines of therapy whilst generating real-time feasibility assessments. The platform aims to democratise access to oncology insights across clinical development, real-world evidence and commercial functions, reducing the time from hypothesis to insight from months to minutes.

Business Wire
Apr 20th, 2026
Flatiron Health publishes first peer-reviewed framework for validating AI-extracted cancer data

Flatiron Health has published the Validation of Accuracy for LLM/ML-Extracted Information and Data (VALID) Framework in the Journal of Clinical Oncology Clinical Cancer Informatics. The framework represents the first peer-reviewed approach to evaluating real-world oncology data extracted by large language models and machine learning. The VALID Framework employs three pillars: variable-level performance metrics benchmarking LLM extraction against human abstraction, automated verification checks identifying data inconsistencies, and replication analyses confirming LLM-extracted results match established clinical findings. Flatiron applies this framework to datasets with longitudinal records across millions of patients and over 1.5 billion data points. The framework aims to establish industry standards for AI-extracted clinical data quality whilst maintaining rigour for high-stakes cancer care and drug development decisions.

Yahoo Finance
Mar 30th, 2026
Abbott integrates precision oncology tests into OncoEMR, reaching 1,600 cancer centres

Abbott Laboratories has integrated its Precision Oncology portfolio into Flatiron Health's OncoEMR platform, giving over 1,600 community cancer centres and 4,700 providers direct access to tests including Oncotype DX and OncoExTra within their clinical workflows. The integration allows clinicians to order and receive cancer diagnostic results without leaving their electronic medical records system. This follows Abbott's recent integration of its Libre continuous glucose monitoring data into Epic's health record system, part of a broader strategy to embed its products into clinical workflows. Whilst the move may enhance test adoption and streamline administrative tasks, analysts suggest it is unlikely to significantly shift Abbott's near-term investment narrative, which remains centred on its core devices business and managing margin pressure from tariffs and foreign exchange headwinds.

The Mirror Democrat and Savanna Times-Journal
Mar 30th, 2026
Abbott expands access to Precision Oncology portfolio through integration with Flatiron's OncoEMR(R) platform.

Abbott expands access to Precision Oncology portfolio through integration with Flatiron's OncoEMR(R) platform. * 1 hr ago PR Newswire ABBOTT PARK, Ill. and NEW YORK, March 30, 2026 * Broadens access to Abbott's Precision Oncology tests across more than 1,600 community cancer care centers and 4,700 providers in Flatiron's North America network, helping accelerate informed treatment decisions * Allows oncologists to order tests and view results directly in the clinical workflow ABBOTT PARK, Ill. and NEW YORK, March 30, 2026 /PRNewswire/ - Abbott (NYSE: ABT), the global healthcare company, and Flatiron Health, a leading healthtech company advancing point-of-care solutions in oncology, today announced the integration of Abbott's comprehensive Precision Oncology portfolio into OncoEMR(R), Flatiron's cloud-based Electronic Medical Record (EMR) platform. Through this integration, oncology providers can now digitally order Abbott tests - individually or in combination - and receive status updates and results directly within their existing OncoEMR clinical workflow. Available Abbott tests include the Oncotype DX Breast Recurrence Score(R), OncoExTra(R), Oncodetect(R), and Riskguard(R) tests, enabling clinicians to access the comprehensive portfolio through a single, unified experience. This approach supports more informed treatment decisions across multiple stages of cancer care while helping reduce administrative burden and keeping the focus on patient care. The integration expands access to Abbott's Precision Oncology tests across Flatiron's national network of more than 1,600 community cancer care centers, where 4,700 providers deliver care and where most cancer care in the U.S. takes place. "We're focused on making it easier for clinicians to access the right information at the right moment of care," said Quincy Weatherspoon, VP and GM of Point of Care Solutions, Flatiron Health. "By integrating Abbott's Precision Oncology portfolio directly into OncoEMR, we're reducing friction in the workflow and helping providers move faster - from test ordering to treatment decisions. This is what it looks like to bring more connected, data-driven care to the point of care." "For community oncology practices, where most cancer care is delivered, this removes a key barrier to accessing our portfolio at the point of care, helping accelerate treatment decisions and enabling more informed, personalized patient care," said Brian Baranick, vice president, Precision Oncology, Abbott. About Abbott Abbott is a global healthcare leader that helps people live more fully at all stages of life. Its portfolio of life-changing technologies spans the spectrum of healthcare, with leading businesses and products in diagnostics, medical devices, nutritionals and branded generic medicines. Its 122,000 colleagues serve people in more than 160 countries. Connect with Mycarrollcountynews at abbott.com and on LinkedIn, Facebook, Instagram, X and YouTube. About Flatiron Flatiron Health is a healthtech company expanding the possibilities for point of care solutions in oncology and using data for good to power smarter care for every person with cancer. Through machine learning and AI, real-world evidence, and breakthroughs in clinical trials, Mycarrollcountynews continue to transform patients' real-life experiences into knowledge and create a more modern, connected oncology ecosystem. Flatiron Health is an independent affiliate of the Roche Group. SOURCE Abbott