Application Development, Operation & Maintenance Engineer

We are looking for an Application Development, Operation & Maintenance Engineer to participate in application development, operation, and maintenance projects for a leading securities company in Japan. The role covers a wide range of phases, from modernising existing systems and new development to operation support, while supporting mission-critical financial systems. Responsibilities: Analysis, knowledge transfer, and first- and second-level support for application development and operation and maintenance projects. Modernization and code improvement of existing applications. Development of new functions and extensions for existing systems. Development of new applications. Fault investigation and incident response for mission-critical systems. Database design, development, and maintenance. Utilization and operational support of related tools and infrastructure such as Jenkins, Terraform, GitLab CI, and Linux scripting. Requirements The requirements we are looking for: Experience in Java application development. Experience in development using front-end frameworks such as React and Angular. Experience in database development using MySQL, Microsoft SQL Server (MSSQL), or Oracle. Japanese: Advanced business level, with the ability to conduct meetings independently, presentations, and negotiations with clients and internal stakeholders. English: Fluent, with the ability to communicate complex business issues accurately and smoothly both verbally and in writing. Preferred Qualifications: Practical experience with Linux scripting. Experience in building and operating CI/CD environments using Jenkins. Experience in infrastructure automation using Terraform. Experience using DevOps-related tools such as GitLab CI. Experience in developing and operating systems in the financial or securities industry. Benefits