Experience using cloud services such as AWS and GCP. Experience in operating Infrastructure as Code such as Terraform, or those who are interested. Programming skills to add functions and fix bugs to applications and middleware necessary to improve system performance and reliability. Basic knowledge of network protocols such as TCP/IP and HTTP. Constructing and operating a monitoring environment for failure detection and capacity planning. Experience in operating RDBMS such as PostgreSQL. Experience leading a team from a technical perspective as a tech lead (lead engineer). Experience as a specialist as an Individual Contributor. Ability to work remotely. Native level Japanese language ability.