Cartesian DataSciences is an outsourced services provider of marketing analytics and machine learning for online / offline retail, travel / hospitality, quick-service restaurants (QSR), banking, and fast-moving consumer goods (FMCG), among other practice areas. The team consists of 200 data scientists under the direction of PhDs. Since the company began as a direct-marketing agency, there’s a fairly unique blend of domain knowledge about consumer response, married to a core competence in model building and analytics.

Cartesian is noted for models with very high accuracy, and for models written in open source (so you own the model, rather than licensing it like most companies make you do). They’re also known for having a deep bench of team members that can elevate your game from wherever you are currently.