Raullen Chai received the PhD degree in Electrical and Computer Engineering from the University of Waterloo in 2012, where his research focused on cryptography, specifically in designing and analyzing of lightweight ciphers and authentication protocols for IoT devices.

He is a member of the Centre for Applied Cryptographic Research (CACR), International Association for Cryptologic Research (IACR), and IEEE Communications Society since 2010. In 2013, he joined Google as senior software engineer leading many security initiatives for its technical infrastructure, including mitigation of SSL attacks against Google such as CRIME/BEAST/POODLE, privacy-preserving SSL offloading, enabling of Certificate Transparency for all Google services.

He was also the founding engineer of Google Cloud Load Balancer
(GCLB), which now serves thousands of cloud services with 1+ million
queries per second. In 2016, he joined Uber as the head of cryptography R&D, leading the research and development of credential storage system, authentication system, risk management and inhouse cryptographic tools. In 2017, he found IoTeX to focus on the building of auto-scalable and privacy-centric blockchain infrastructure that is designed and optimized for Internet-of-Things (IoT).

In addition, he serves as Editor of KSII Transactions on Internet and Information Systems, and served as reviewers for many prestigious conferences and journals, including Fast Software Encryption, Selected Areas in Cryptography, International Conference on Cryptology in India, IEEE Transactions on Cloud Computing, IEEE Transactions on Smart Grid, IEEE Transactions on Wireless Communications, Cryptography and Communications Discrete Structures, Boolean Functions and Sequences, Information Sciences, IEEE International Symposium on Information Theory, IEEE Global Communications Conference and etc.