Principal Data Scientist

Company: Harnham
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Location: Greater London
Job Description:

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Building Data Science and Machine Learning Teams in the UK | The Talent Driving The Data and AI Revolution

Principal Data Scientist

Up to £85,000

London (Hybrid, 3 days onsite per week)

Company:

Join one of the world’s biggest high street fashion brands, who has been leading the industry for the past 55 years. They are looking for a Principal Data Scientist to lead and scale their data science strategy, helping to unlock insights, optimise performance, and shape the future!

They are on a mission to make a real impact – for our customers and our people. With a strong presence both online and offline, we’re committed to driving innovation, embracing inclusivity, and creating meaningful experiences through the power of data.

Responsibilities:

  • Own the data science strategy and roadmap across the business
  • Build, mentor, and scale a high-performing team of data scientists and analysts
  • Create scalable solutions to solve real-world challenges like demand forecasting, personalisation, and customer segmentation
  • Translate business problems into data science use cases and deliver measurable outcomes
  • Use data-driven insights to streamline workflows and improve decision-making in areas like inventory, logistics, and customer journey
  • Measure success through improvements in performance metrics like conversion, retention, stock accuracy, and customer satisfaction

Requirements:

  • MSc or PhD Degree in Computer Science, Artificial Intelligence, Mathematics, Statistics or related fields.
  • Expert in Python, R, SQL and a range of ML techniques (e.g., random forests, neural nets, reinforcement learning)
  • Track record of delivering high-impact AI projects from concept to production
  • Strong communication skills – able to translate complex insights into business value
  • Passionate about innovation, mentorship, and driving change through data

How to Apply:

Please register your interest by sending your CV to Emily Burgess via the Apply link on this page.

Seniority level

  • Seniority level

    Mid-Senior level

Employment type

  • Employment type

    Full-time

Job function

  • Job function

    Analyst and Engineering

  • Industries

    Retail Apparel and Fashion

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Posted: April 11th, 2026