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7 дней назад

Principal Data Scientist (Experimentation)

Формат работы
hybrid
Тип работы
fulltime
Грейд
senior
Английский
b2
Страна
UK
Вакансия из списка Hirify.GlobalВакансия из Hirify Global, списка международных tech-компаний
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TL;DR
Principal Data Scientist (Experimentation): Building organisation-wide experimentation standards, tooling and statistical methods for a travel marketplace with an accent on causal inference, Bayesian approaches, measurement validity and low-traffic or long-horizon outcomes. Focus on designing and validating complex methodologies, improving platform health and mentoring data scientists through rigorous decision-making.

Location: London; hybrid work

Company

hirify.global connects travellers with experiences through travel content, guidance and two-sided marketplaces, including hirify.global, Viator and TheFork.

What you will do

  • Set the technical standard for experimentation across Product Data Science, including A/B testing, quasi-experimental and Bayesian methods.
  • Build protocols, frameworks and tooling that enable teams to experiment independently while maintaining rigour.
  • Own measurement approaches for Viator’s most complex questions, including low-traffic surfaces and long-horizon outcomes.
  • Develop and validate statistical methods through simulation-based verification.
  • Serve as the final technical authority on measurement validity and communicate evidence and uncertainty to leadership.
  • Mentor senior data scientists and improve experimentation through automation and AI capabilities.

Requirements

  • Extensive experience in data science or a comparable quantitative role supporting and influencing product organisations.
  • Authoritative expertise in experimental design, variance reduction, causal inference, bandits and Bayesian methods.
  • Expert proficiency in Python and SQL, with hands-on experience in statistical modelling and machine learning.
  • Experience defining and operationalising product and feature-level metrics.
  • Experience standardising methods across teams and partnering with Product, Engineering and Data Platform functions.
  • Bachelor’s degree in Statistics, Mathematics, Data Science, Engineering, Physics, Economics or a related quantitative field.

Nice to have

  • Experience with experimentation in two-sided marketplaces and finite shared supply.
  • Experience with proxy or surrogate metrics, hierarchical methods and low-traffic experimentation.
  • Experience building experimentation platforms, self-service capabilities or data products.
  • Experience in high-scale technology, marketplace, e-commerce or travel technology organisations.
  • Experience with AI, large language models, agentic AI, automation or tools such as Statsig, Eppo or GrowthBook.

Culture & Benefits

  • Inclusive and accessible recruitment experience.
  • Reasonable accommodation is available during the application and recruitment process.
  • Collaboration spans Product, Engineering, Data Platform and other central functions.

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