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Signifyd - Back End and Machine Learning Engineers - San Jose - Full Time www.signifyd.com/careers/ Our engineers build systems that catch bad guys. Using all available payment, user, and machine data, we have to separate legitimate credit card transactions from fraudulent in under 400ms. That means doing just-in-time mash-ups of internal data with external APIs and reducing it all into a single score with a few critical insights for end-users. To solve this problem, we're looking for world-class engineers who are eager to learn, adopt, and contribute to a reactive style of programming. Our stack: Java, Python, Cassandra, MySQL, Solr, Apache Spark, Play! framework, Linux, Docker, AWS Signifyd was recently named In Forbes 50 Most Innovative Fintech Companies