OpenTrain AI is seeking a mathematics expert to design original, research-style mathematics problems and verify them computationally using Python to help train and evaluate AI systems. Candidates need at least a bachelor's degree in mathematics or a related field, 2+ years of relevant experience, and strong proficiency in Python libraries like NumPy, SciPy, and SymPy. The part-time contractor position requires English proficiency and at least 20 hours per week, open worldwide except for specified restricted locations.