Data Scientist – Experimentation & Ads Analytics

Company: Principle
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Job Description:

Senior Data Scientist – Experimentation & Ads Analytics – Short Contract

Want to work on data problems at a global scale?

We’re hiring a Senior Data Scientist to help improve how digital advertising performance is measured and optimised across one of the world’s largest consumer platforms.

You’ll analyse massive datasets, design A/B experiments, and work closely with product and engineering teams to turn insights into real product improvements.

The Offer:

  • Annual Salary up to £105,000 doe and location (pro-rata)
  • Contract Length: approx ~3 months – inside IR35 – PAYE – Paid weekly via PrincipleHR
  • Paternity Cover
  • Location: Remote within the UK (candidates considered are to be physically based in the UK and have the appropriate work permit, no sponsorship)

What you’ll work on

  • Measuring and improving ad performance
  • Designing and analysing A/B experiments
  • Identifying insights from large-scale datasets
  • Influencing product and advertiser targeting strategies

What we need

  • Strong SQL and data analysis skills
  • Experience with A/B testing/experimentation
  • Background in product analytics, ads, or growth data
  • Python or R
  • Experience working with large datasets

If you enjoy solving complex data problems and influencing product decisions through experimentation, we’d love to hear from you.

Apply now or reach out for a confidential chat.

Posted: March 27th, 2026