Job summary
- Main area
- Population health
- Grade
- NHS AfC: Band 8a
- Contract
- 16 months (Fixed Term)
- Hours
- Full time - 37.5 hours per week
- Job ref
- 196-COF10821-Y
- Employer
- Guy's and St Thomas' NHS Foundation Trust
- Employer type
- NHS
- Site
- Education Centre
- Town
- London
- Salary
- £61,927 - £68,676 p.a. inclusive of HCA (pro rata)
- Salary period
- Yearly
- Closing
- 27/07/2025 23:59
Employer heading

Senior Population Health Data Scientist
NHS AfC: Band 8a
Guy’s and St Thomas’ is among the UK’s busiest and most successful NHS foundation trusts. We provide a full range of hospital and community services for people in south London and as well as specialist care for patients from further afield including cancer, renal, orthopaedic, respiratory and cardiovascular services.
Guy’s is home to the largest dental school in Europe and a £160 million Cancer Centre opened in 2016. As part of our commitment to provide care closer to home, in 2017 we also opened a cancer centre and a kidney treatment centre at Queen Mary’s Hospital in Sidcup. St Thomas’ has one of the largest critical care units in the UK and one of the busiest emergency departments in London. It is also home to Evelina London Children’s Hospital.
Evelina London cares for local children in Lambeth and Southwark and provides specialist services across south east England including cardiac, renal and critical care services. We lead a number of specialist service networks aiming to ensure children are treated locally where possible, but have access to specialist expertise when they need it. Our community services include health visiting, school nursing and support for families of children with long-term conditions.
Our adult community services teams deliver care at the heart of the local communities we serve, working in partnership with GPs, local authorities and other healthcare and voluntary sector organisations. Working with our partners in Lambeth and Southwark, we are focusing on new ways of working to improve care for local patients.
In February 2021 the Royal Brompton and Harefield joined Guy’s and St Thomas’ NHS Foundation Trust, bringing together world-leading expertise in the care and research of heart and lung disease. Our merger provides a once in a generation opportunity to build a lasting, world-renowned heart and lung centre, providing the highest quality care for patients and conducting world-leading research.
We have a reputation for clinical excellence and high quality teaching and research. We are part of King’s Health Partners, one of eight accredited UK academic health sciences centres. In partnership with King’s College London we have dedicated clinical research facilities including an MHRA accredited Phase I clinical trials unit.
Patients are at the heart of everything we do and we pride ourselves on ensuring the best possible patient experience as well as safe, high quality care. We are proud to have one of the lowest mortality rates in the NHS. Following a comprehensive Care Quality Commission (CQC) inspection in 2019 we maintained our overall rating of ‘good’. Our adult community services achieved a rating of ‘outstanding’.
The commitment of our 23,500 staff is key to our success. We are one of the largest local employers and we aim to develop and support all our staff so they are able to deliver high quality, safe and efficient care. The 2019 NHS staff survey results show that we have one of the most engaged and motivated workforces in the NHS. We know this has a positive impact on the care provided to our patients.
We have one of the most ambitious capital investment programmes anywhere in the NHS.
Job overview
Join one of the UK’s largest and most successful NHS trusts as a Senior Population Health Data Scientist. Based in our pioneering Population Health Hub, you’ll play a key role in transforming how we use data to improve health outcomes and tackle health inequalities.
You’ll lead high-impact projects using Python, advanced analytics, and real-time NHS data on a cutting-edge cloud platform. From building predictive models to designing data visualisations, your insights will directly shape care models, inform service redesign, and drive preventative, equitable healthcare.
You’ll work collaboratively with clinicians, system leaders, and the London AI Centre, combining analytical expertise with real-world impact. This is more than just a technical role, it’s your chance to contribute to healthcare transformation at system level.
If you're ambitious, innovative, and passionate about improving population health, we want to hear from you.
Our values: Caring. Ambitious. Inclusive. Join us and make a difference
Main duties of the job
We are seeking a Senior Population Health Data Scientist to lead complex analytics and drive system-wide transformation across Guy’s and St Thomas’ NHS Foundation Trust. You will evaluate and redesign care pathways, applying advanced analytics (e.g., regression modelling, risk stratification) to tackle health inequalities and improve outcomes.
Using tools like Python, R, SQL, and Power BI, you will extract and analyse data from multiple care settings to produce actionable insights, support prevention, and drive evidence-based decision-making. You'll also design KPI frameworks, evaluate impact, and communicate findings to senior leaders, clinicians, and wider stakeholders.
This role demands strong leadership in capability building, project delivery, stakeholder engagement, and analytical strategy. You’ll build a culture of continuous improvement, lead training initiatives, mentor staff, and contribute to a technical community of practice.
With a focus on governance, quality, and innovation, you’ll ensure data use is ethical, reproducible, and impactful — influencing resource allocation, investment decisions, and care transformation at all levels
Working for our organisation
Guy’s and St Thomas’ NHS Foundation Trust comprises five of the UK’s best known hospitals – Guy’s, St Thomas’, Evelina London Children’s Hospital, Royal Brompton and Harefield – as well as community services in Lambeth and Southwark, all with a long history of high quality care, clinical excellence, research and innovation. We are among the UK’s busiest, most successful foundation trusts. We provide specialist care for patients including heart and lung, cancer and renal services as well as a full range of local hospital and community services for people in Lambeth and Southwark.
We have a long tradition of clinical and scientific achievement and – as part of King’s Health Partners – we are one of England’s eight academic health sciences centres, bringing together world-class clinical services, teaching and research. We have one of the National Institute for Health Research’s biomedical research centres, established with King’s College London in 2007, as well as dedicated clinical research facilities.
Royal Brompton and Harefield hospitals joined Guy’s and St Thomas’ in February 2021 and is the largest specialist heart and lung centre in the UK and among the largest in Europe. We provide treatment for people with heart and lung disease, including rare and complex conditions, offering some of the most sophisticated treatment that is available anywhere in the world.
Detailed job description and main responsibilities
As Senior Population Health Data Scientist, you will provide expert-level leadership on the design, delivery, and use of advanced analytics to support population health improvement. This is a critical role, blending technical depth with system thinking, and supporting transformation through robust data insight. In this role, you will:
· Apply advanced techniques using Python for data analysis, model development, and data visualisation
· Work across some of the richest population health data available in the NHS, on near-real time data flows in a modern cloud platform
· Design and lead complex analytical projects to inform service redesign and address health inequalities.
· Collaborate with clinical teams, operational leaders, and system partners to embed data-informed decision-making.
· Summarise and present data and conclusions in the most appropriate format for users
· Build scalable tools and approaches to improve the Trust’s capacity for population health management.
Contribute to strategic planning, insight generation, and capability building across the Trust and wider system.
Person specification
Qualifications
Essential criteria
- MSc in Population Health, Public Health Informatics, Health Data Science or equivalent.
- Evidence of significant continuing professional development in data science, quality improvement or a related field
Desirable criteria
- PhD level degree in relevant technical subject
- Medical degree, or other background working as a clinician
- Certification in project or programme methodologies (e.g., PRINCE2, Lean Six Sigma).
Knowledge & Experience
Essential criteria
- Significant experience working in an analytical role within health, public health, or care sectors.
- Proven expertise in working with large, complex, and multi-source datasets.
- Track record of influencing decisions at senior level through high-impact analysis and visualisation.
- Expert proficiency in SQL, R, Python, Excel, Power BI or Tableau.
- Skilled in segmentation, stratification, equity analysis, and predictive analytics.
- Excellent project and stakeholder management, with ability to lead multiple complex streams simultaneously
- Experience in data science and machine learning projects in the healthcare sector.
Desirable criteria
- Previous experience working in, or collaborating with, academia, in high impact and multi-institutional settings.
- Previous experience or building or working with OMOP Common Data Model
Skills and Ability
Essential criteria
- Expert Proficiency in SQL and in Python
- Advanced understanding and application of data science and statistical techniques to healthcare data.
- Ability to manage a technical product lifecycle, including through end-user feedback and testing
Desirable criteria
- Experience in R and in Javascript
- Proficiency using DBT +/- Snowflake +/- Azure
Personal Behavoirs
Essential criteria
- Proven experience in the ability to interact with colleagues at all levels both clinical and non-clinical within healthcare
- Ability to produce and deliver, or receive and process, detailed complex and highly sensitive information
Applicant requirements
The postholder will have access to vulnerable people in the course of their normal duties and as such this post is subject to the Rehabilitation of Offenders Act 1974 (Exceptions) Order 1975 (Amendment) (England and Wales) Order 2020 and as such it will be necessary for a submission for Disclosure to be made to the Disclosure and Barring Service to check for any previous criminal convictions.
Documents to download
Further details / informal visits contact
- Name
- Katherine Brittin
- Job title
- Programme Director - Population Health Hub
- Email address
- [email protected]
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