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Senior Data Scientist

trainlineLondonTechnology
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Salary
Not listed
Job type
Full-time
Experience
Senior
Posted
21 Sept 2026
Status
Open · checked 7d ago

About this role

Trainline seeks a Senior Data Scientist in London to own investigations and solutions spanning search, supply, and commerce across the business. This hybrid role suits an experienced data professional who enjoys variety, complex datasets, and driving measurable customer impact.

Role Overview

Trainline is hiring a Senior Data Scientist to work within the Data Science and Analytics team in London. The position operates across multiple areas of the business, connecting insights from search, supply, and commerce to improve the end-to-end customer journey.

Key Responsibilities

Work across search, supply, and commerce by combining diverse datasets to address complex challenges spanning multiple pillars.
Identify business and customer opportunities through data analysis, building tools and approaches to increase team effectiveness.
Investigate root causes of recurring problems like checkout errors or zero-result searches to create lasting customer improvements.
Drive continuous improvement by turning recurring patterns into reusable frameworks and solutions.
Surface product and commercial opportunities and communicate insights to the relevant teams for timely action.
Mentor and guide colleagues across data and partner teams to build analytical capability and confidence.
Partner with data scientists, analysts, and cross-functional teams across organizational boundaries.
Navigate competing priorities in fast-moving and ambiguous situations with structure and sound judgement.

Requirements

Substantial experience as a Data Scientist at a senior level with autonomy and judgement.
Proven track record of owning a functional or business area end to end from analysis to outcomes.
Experience working across multiple business areas and adapting to different stakeholders and contexts.
Demonstrated ability to deliver measurable business impact via product analytics and actionable insights.
Strong proficiency in SQL and Python for analyzing complex datasets, plus engineering practices like version control and AI tool utilization.
Confidence in handling large, diverse, and unfamiliar datasets to build robust problem understanding.
Experience mentoring other data scientists in technical skills and problem-solving.

Nice to Have

Experience working in a digital, technology-driven, or marketplace business.

Skills and Tools

SQL
Python
Version Control
AI Tools

Salary and Benefits

Private healthcare and dental insurance
Generous work from abroad policy lasting up to 28 days
Two-for-one share purchase plans
EV scheme for carbon emission reduction
Extra festive time off and family-friendly benefits
Personal learning budgets and regular learning days

About the Company

Trainline is Europe's leading independent rail and coach travel platform, helping millions of travelers find and book journeys via its mobile app, website, and partner channels. The company employs over 1,000 people from more than 50 nationalities across offices in London, Paris, Barcelona, Milan, Edinburgh, and Madrid, operating on a hybrid model requiring a minimum of 60% office presence over a 12-week period.

How to Apply

To submit an application for this position, please visit the official company careers page.

Skills and tech stack

Questions candidates ask

What is the location and work model for this role?

The position is based in London and operates on a hybrid model, requiring employees to work from the office a minimum of 60% of their time over a 12-week period.

What programming languages and technical skills are required?

Candidates must have strong SQL and Python skills, along with familiarity with version control and AI tools.

What kind of team will I be working in?

You will work in the Data Science and Analytics team, collaborating closely with data scientists, data analysts, product, engineering, and commercial teams.

Are there opportunities for career development and learning?

Yes, Trainline provides clear career paths, transparent pay bands, personal learning budgets, and regular learning days.

What benefits are included with the position?

Perks include private healthcare and dental insurance, a 28-day work from abroad policy, 2-for-1 share purchase plans, an EV scheme, extra festive time off, and family-friendly benefits.

Ready to apply?

The application is on the official trainline careers page.

Apply on company site