Yifan Lin is an Applied Scientist at LinkedIn, where he develops machine learning and causal inference methods for large-scale decision-making systems. He received his Ph.D. in Operations Research from the Georgia Institute of Technology under the supervision of Prof. Enlu Zhou. His research interests include causal inference, reinforcement learning, sequential decision making, stochastic optimization, and large-scale machine learning, with a focus on translating theoretical advances into production AI systems.