Data Scientist - Supply

The Trainline; City of Westminster; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A leading travel technology company in the United Kingdom is seeking a Data Scientist to drive commercial and supply strategies through data analysis. The role requires a minimum of 2 years of experience in data science, strong skills in predictive modeling, and proficiency with tools like SQL, Python, and Tableau. Candidates will work within a diverse team and contribute to the growth of a highly-rated mobile app and website, focusing on innovative solutions to enhance user experience. This position offers excellent career growth opportunities and a hybrid work model.

Benefits

Private healthcare & dental insurance

Work-from-abroad policy

2-for-1 share purchase plans

EV Scheme

Extra festive time off

Family-friendly benefits

Qualifications

• 2+ years commercial experience using data science and analytics to drive business decisions.
• Experience working in complex supply/demand environments.
• Strong grasp of experimental design and causal inference.

Responsibilities

• Develop understanding of the network and supply ecosystem.
• Drive cross-functional reviews to track performance against goals.
• Support product interventions through data-driven analysis.

Skills

Data analysis

Predictive modeling

Data visualization

Communication skills

Experimental design

Tools

SQL

Python

R

Tableau

AWS Athena

Job description

Data Scientist – Responsibilities

• Develop deep understanding of the network and supply ecosystem and how these shape Trainline's growth.
• Contribute to roadmap and priorities for the commercial + supply domains, ensuring alignment with Trainline's growth strategy.
• Drive cross‑functional reviews with commercial, carrier, and product stakeholders to track performance against goals.
• Identify and articulate new opportunities, helping shape where Trainline should invest.
• Support product interventions and commercial initiatives through data‑driven experimentation and analysis, enabling accountability and impact.
• Define focus through metrics, market intelligence, and product understanding.
• 2+ years commercial experience using data science and analytics to drive business decisions.
• Experience working in complex supply/demand environments (transport, marketplaces, travel, e‑commerce, etc.).
• Skilled in analysing availability, capacity, and pricing data to uncover growth opportunities or diagnose performance issues.
• Strong grasp of experimental design and causal inference in less‑controlled environments where attribution is difficult.
• Comfort balancing strategic framing (where to invest, how to win) with operational analytics.
• Strong PowerPoint and presentation/communication skills.
• Strong data visualisation skills using tools like Tableau, Spotfire, Power BI, etc.
• Expertise in predictive modelling, including both parametric (e.g. logit/probit) and non‑parametric (e.g. random forest, neural net) techniques as well as wider ML techniques like clustering / random forest (desirable).
• Tech Stack: SQL, Python, R, Tableau, AWS Athena + More!

About Trainline

We are champions of rail, inspired to build a greener, more sustainable future of travel. Trainline enables millions of travellers to find and book the best value tickets across carriers, fares, and journey options through our highly rated mobile app, website, and B2B partner channels. Great journeys start with Trainline—Europe's number 1 downloaded rail app, with over 125 million monthly visits and £5.9 billion in annual ticket sales, we collaborate with 270+ rail and coach companies in over 40 countries. We want to create a world where travel is as simple, seamless, eco‑friendly and affordable as it should be. Today, we're a FTSE 250 company driven by our incredible team of over 1,000 Trainliners from 50+ nationalities, based across London, Paris, Barcelona, Milan, Edinburgh and Madrid. With our focus on growth in the UK and Europe, now is the perfect time to join us on this high‑speed journey.

Perks & Benefits

Enjoy fantastic perks like private healthcare & dental insurance, a generous work‑from‑abroad policy, 2‑for‑1 share purchase plans, an EV Scheme to further reduce carbon emissions, extra festive time off, and excellent family‑friendly benefits. We prioritise career growth with clear career paths, transparent pay bands, personal learning budgets, and regular learning days. Jump on board and supercharge your career from day one!

Our Values

• Think Big – We're building the future of rail.
• Own It – We focus on every customer, partner and journey.
• Travel Together – We're one team.
• Do Good – We make a positive impact.

Diversity & Inclusion

We know that having a diverse team makes us better and helps us succeed. And we mean all forms of diversity—gender, ethnicity, sexuality, disability, nationality and diversity of thought. That's why we're committed to creating inclusive places to work, where everyone belongs and differences are valued and celebrated.