Kazuki Ohata graduated from the University of Electro-Communications, Faculty of Electrical Communication, Department of Information and Communication Engineering, and completed his graduate studies at the University of Electro-Communications, Graduate School of Information Science and Technology (Integrated Informatics).
During his undergraduate studies, he studied image transformation algorithms for high compression, applying quantum cellular automata, one of the computational models of quantum computers.
After completing his graduate studies, he worked at the System Information Department of the Bank of Japan, where he was responsible for the operation and management of various systems, including the Bank of Japan Financial Network System (commonly known as "BOJ-Net"), as well as the external and internal design and testing of the system for recording the receipt and payment of treasury funds and the internal file server system of the Bank.