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Feedzai: Data Scientist

Feedzai is a startup with offices in Portugal and Silicon Valley working in online fraud prevention and digital payments, looking for Machine Learning Research Engineers and Data Scientists.

Feedzai Company: Feedzai
Location: Lisbon, Portugal

Feedzai is a startup with offices in Portugal and Silicon Valley (San Mateo) working in online fraud prevention and digital payments. Keeping up with the company growth, Feedzai Research is looking for 2 Machine Learning Research Engineers. We are looking for data scientists with as much skill as passion and large amounts of both! Come and help us disrupt the hot hot market of digital payments and online fraud prevention!


  • Work close with other R&D team members in thorny fraud detection problems.
  • Support your answers and findings with appropriate statistical techniques and methods.
  • Contribute to the team knowledge by keeping up with the state-of-the-art in machine learning applied to our domains.
  • Communicate findings within the organization, particularly the management, product and delivery teams.
  • Develop solution prototypes and help integrate them with the product.

What we offer:

  • Career growth and ninja skills over a set of emerging technologies and tools such as Spark, Scala, Hadoop, Cassandra, R, Weka, and more.
  • Independence to choose preferred tools and techniques to solve problems and minimize time-to-completion.
  • Become a member of an award-winning, amazing, driven, focused team which is disrupting the market.
  • Relaxed working environment in Lisbon, Europe's Leading City Break Destination city.


  • Expert knowledge of supervised machine learning (classification algorithms is preferred).
  • 2+ years of experience in training and testing models with R, Weka, Matlab or other related tools.
  • Knowledge in data pre-processing, data cleaning and feature design (extract/build new features).
  • Critical and analytical mind and ability to see the big picture.
  • Very good programming skills.
  • Optimism, self-motivated and the ability to work in teams.


  • Dealing with unbalanced datasets/classes.
  • Experience in dealing with high performance and real-time scoring/classification requirements.
  • Experience in handling large datasets (above tens of GBs) or working with Hadoop, Spark and related tools.
  • MSc or PhD valued.

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About Feedzai
Feedzai is a data science company that uses real-time, machine-based learning to help payment providers, banks and retailers prevent digital payment fraud in omnichannel commerce. Feedzai is a global company, with US headquarters in San Mateo and is backed by SAP Ventures, big data investment firm Data Collective, and other international investors. Companies that rely on Feedzai include Coca-Cola, Logica, Vodafone, Ericsson, SIBs Payment Solutions, Horizon Wind Energy, and Servebase Credit Card Solutions.

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