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# Senior Data Scientist

- **Company:** The Trainline
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Big Data, Python (Programming Language), Standard Sql, SQL Databases, Usage Analysis
- **Published:** September 21, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=6556eff9c2eed563

## About the Role

* Substantial experience working as a data scientist at a senior level, with the confidence and judgement that comes from having operated in that capacity rather than stepping into it for the first time.
 * Strong working knowledge of SQL and Python, used confidently to explore, analyse and draw insight from complex datasets.
 * Experience working across more than one business area or pillar, comfortable adapting your approach depending on the context.
 * A track record of owning a business or functional area, taking responsibility for outcomes rather than just delivering analysis.
 * Confidence mentoring or guiding more junior colleagues, helping others grow their skills and approach to problem-solving.
 * Comfort working at a detailed dataset level, connecting different data sources to build a fuller picture rather than relying on high-level summaries.
 * Ideally, experience in a marketplace or similar technology-driven business, though this isn't essential.
 * It would also be helpful if you have experience with product analytics, or have used AI tools alongside SQL and Python to work more efficiently.

## Description

* Mentor and guide junior colleagues, sharing your approach to problem-solving and helping build capability across the team.
 * Partner closely with data scientists, data analysts and cross-functional teams responsible for search, supply, commerce and core customer experiences.
 * Balance competing priorities across multiple areas of the business, bringing structure and clarity to fast-moving or ambiguous situations.
 * Contribute to a culture of continuous improvement, helping the team learn from incidents and turn them into lasting improvements.


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