Sai Krishnan is a Software Engineer at Walmart Global Tech, specializing in building scalable distributed systems. He is part of the GraphQL gateway team, where he designs and maintains core gateway infrastructure and builds high-performance subgraphs. With over 5 years of experience at Walmart, Amazon, and Adobe, Sai delivers enterprise-grade backend solutions using GraphQL, REST, and cloud-native technologies. He holds a Master’s degree in Computer Science from UC Irvine.