Data Scientist

London, UK

Do you always need to get to the bottom of how things work? Do you get heart palpitations when siphoning through great amounts of data? Do you live for the eureka moment when everything aligns and you find a clear story in the patterns? Do you tend to figure out who is the killer way before the movie ends?  Then keep reading…

Creating great ads with a soul is not easy. Join our expanding product team in London to shape the next generation of our platform and help us change that.

You will have access to billions of data points and the chance to partner with senior leaders within our organization.


  • Design and manage ad effectiveness studies (e.g.: brand uplift, creative pre-testing, etc.)
  • Conduct quantitative research about ad performance
  • Build and automate machine learning models using various data sources
  • Partner with product & engineering teams to develop new methodologies and products for ad performance prediction
  • Convey your message to team members and other stakeholders using your excellent communication skills


  • Minimum 2 years experience as a data scientist
  • Demonstrated experience in machine learning techniques: predictive modeling, cluster analysis, classification, natural language processing
  • Masters, PhD, or equivalent experience in a quantitative field (Computer Science, Mathematics, Engineering, Artificial Intelligence, etc.)
  • Demonstrated experience using R or similar languages (Matlab, Python) to analyse, transform and visualize big data
  • Excellent English communication skills
  • Ability to be self-driven, pro-active, systematic, well organised and rigorous about details
  • Ability to operate in a highly multidisciplinary and collaborative environment where effective exchange of knowledge between peers is crucial
  • A “can-do” mindset pursuing excellence


About Celtra

Celtra is the Creative Management Platform for digital advertising. Brand and performance advertisers use our fully self-service platform to create, distribute and optimize the highest quality, data-driven ads at scale, across all channels and screens with great efficiency and control. We power the best video, native and rich media ads for 2/3 of Fortune 500 brands.

If you have an interest in a company who’s interested in both your wellness and your wallet (medical, dental, vision, parental leave, education, fitness, commuter, 401k... you get the picture), you should apply. Celtra is headquartered in Boston (MA), with offices in New York City, San Francisco, London (UK), Sydney (AU) and Ljubljana (SI). For more information, visit Celtra at or @CeltraMobile on Twitter.


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