Tianshi Zhu is the Head of Risk Engineering at Airwallex. He was one of the Tech Leads on ML Infra team at Stripe. The team builds out the platforms to power Stripe's fraud detection systems and other ML products. Prior to that, he worked on Sigma team at Stripe and Search Infra team at linkedin. Tianshi has spent the last six years on big data and large real-time systems. He graduated from UPenn with a Master's degree in Electrical Engineering.