Tianqi Cui is a Research Scientist at Meta, specializing in HW/SW co-design for ads ranking machine learning modeling. Prior to this role, Tianqi served as a Research Assistant at Johns Hopkins Whiting School of Engineering, focusing on time series analysis, deep learning, numerical optimization, and scientific computing. Experience includes a Summer Research Internship at Los Alamos National Laboratory, working on AI applications in quantum mechanics. Academic qualifications include a Doctor of Philosophy in Systems Engineering, two Master of Science degrees in Applied Mathematics and Statistics and Computer Science, and a Bachelor of Engineering in Engineering, all from Johns Hopkins Whiting School of Engineering, alongside a Bachelor's degree in Economics from Tsinghua University.