Principal Data Scientist
World of Books Group
- London, England, United Kingdom
- London, England, United Kingdom
À propos
At World of Books, we’re on a mission to become the Planet’s Bookstore — helping people read more while wasting less. As a certified B-Corp and a £200m+ global ecommerce business, data science sits at the heart of how we price millions of books sustainably and profitably.
We’re now looking for a Principal Data Scientist to play a critical technical leadership role in shaping how advanced modelling and experimentation are applied to pricing at scale.
The Role This is a senior individual contributor role (no people management), focused on solving complex, high-impact pricing problems through experimentation, causal inference and applied machine learning.
You’ll work closely with our Data Science Manager, engineers and commercial leaders, acting as a technical authority and mentor while remaining hands‑on.
What You’ll Be Doing
Leading advanced pricing optimisation, elasticity modelling and experimentation
Designing and evaluating A/B tests, bandits and quasi-experiments
Building and deploying production‑grade models with strong observability
Setting practical standards for modelling, experimentation and DS workflows
Mentoring senior and mid‑level data scientists through review and example
Advising stakeholders on trade‑offs between rigour, speed and business value
Identifying future high‑value data science use cases beyond pricing
What We’re Looking For
Deep experience applying data science in commercial environments (pricing, ecommerce or marketplaces ideal)
Expert Python and strong SQL
Advanced knowledge of statistics, ML and causal inference
Proven experience deploying and iterating on models in production
Ability to influence through expertise and communicate clearly with senior stakeholders
Pragmatic, outcome‑focused mindset with comfort in ambiguity
Why Join World of Books?
Work on meaningful, planet‑positive problems at global scale
A true Principal IC role with influence but no line management
Partner closely with an experienced DS Manager who owns strategy and prioritisation
Help shape how data science is practised in a growing, evolving organisation
Be part of a mission‑driven, collaborative and inclusive culture
Interested? If you’re a senior data scientist who thrives on complex problems, hands‑on technical leadership and real‑world impact — we’d love to hear from you.
World of Books is proud to be an equal opportunities employer and is committed to building a diverse and inclusive team.
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Compétences linguistiques
- English
Avis aux utilisateurs
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