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Lorien
Principal Product Data ScientistLorien • London Area, United Kingdom, United Kingdom
Principal Product Data Scientist

Principal Product Data Scientist

Lorien • London Area, United Kingdom, United Kingdom
9 days ago
Job type
  • Full-time
Job description

Principal Product Data Scientist


Contract Length: 12 Months

Location: Hybrid - 3 days a week at Heathrow Airport

IR35 Status: Insid3


About the Role

We are looking for a Principal Product Data Scientist to drive the next generation of data-driven decision making across our products, platforms and customer experiences. This role combines advanced analytics, experimentation, machine learning, optimisation, and strategic leadership to solve complex business problems at scale. As a Principal Data Scientist, you will shape product strategy, influence executive decision-making, and lead high-impact initiatives from ideation through deployment. You will partner closely with Product, Engineering, Design, Research and Business stakeholders to unlock customer value and improve operational outcomes.


What You'll Do

  • Define and lead the long-term data science strategy for critical product areas.
  • Partner with Product leaders to influence roadmap prioritisation through data and experimentation.
  • Design and execute advanced analytical frameworks to measure customer behaviour, product performance and business impact.
  • Lead complex experimentation programs, including A/B testing, causal inference, uplift modelling and quasi-experimental methods.
  • Develop machine learning, optimisation and decision science solutions that improve customer experience and operational efficiency.
  • Translate ambiguous business challenges into structured analytical problems and actionable recommendations.
  • Communicate insights and recommendations to senior executives and leadership teams.
  • Establish best practices for scientific rigor, experimentation, measurement and model governance.
  • Mentor and develop other data scientists across the organisation.
  • Influence company-wide analytics and product science standards.


Preferred Experience

  • 8+ years of experience in Data Science, Product Analytics, Decision Science, Operations Research, Applied Science or related fields.
  • Demonstrated success influencing product strategy through data.
  • Strong experience with experimentation, causal inference and measurement frameworks.
  • Experience developing machine learning models in production environments.
  • Experience with optimisation, decision science, forecasting, recommendation systems or machine learning at scale.
  • Proven track record delivering measurable business impact.
  • Experience leading cross-functional initiatives involving Product, Engineering and senior stakeholders.
  • Previous experience operating at Staff, Principal or equivalent level.


Technical Skills

  • Expert-level Python and SQL
  • Experimentation and statistical inference
  • Machine Learning and Predictive Modelling
  • Causal Inference
  • Optimization / Operations Research (preferred)
  • Large-scale data processing
  • BI and visualization tools
  • Cloud-based analytics environments


Nice to Have

  • Airline, transportation, logistics, marketplace, e-commerce or technology experience.
  • Experience with mathematical programming (Gurobi, CPLEX, OR-Tools).
  • Experience with network optimisation, routing, scheduling, pricing or revenue management.
  • Advanced degree (MSc or PhD) in Data Science, Statistics, Mathematics, Computer Science, Operations Research,
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Principal Product Data Scientist • London Area, United Kingdom, United Kingdom

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