Alex R.

Alex R. is a highly skilled machine learning professional with extensive experience in the field. Currently serving as a Staff Machine Learning Engineer at Scale AI since November 2025, Alex specializes in large language model training, reinforcement learning, and inference. Prior to this role, Alex worked as an AI Engineer at Modern Treasury and as a Senior Machine Learning Engineer at SHEIN Technology LLC. From January 2017 to April 2023, Alex contributed to Tinder as a Senior ML Engineer, focusing on building large-scale machine learning models for user experience and trust/safety features. Alex's earlier experience includes a Data Scientist role at MD Insider and positions involving deep learning and customer churn prediction models. Alex holds a Ph.D. in Mathematics from New York University and a Bachelor of Science in Mathematics and Physics from UC Santa Barbara.