In-house Service Development / Marubeni Group: System development for corporate communication services / Opportunity to challenge upstream processes

■Overview You will be responsible for the development, maintenance, and improvement of various systems related to IP telephony services. The systems to be developed are for providing our in-house services stably. We will continuously improve them based on operational status and challenges after release. Depending on your experience, you will start with improving and adding features to existing systems, and in the future, you will be involved in design, stakeholder coordina...