Senior Data Center Engineer, Data Center Operation Section (RMI Cloud Platform Dep)
Rakuten Mobile, Inc. · JP
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About the Role
The Cloud Platform Department provides end-to-end services for Rakuten Mobile’s virtualized infrastructure. Our Data Center E&O Team manages the full lifecycle of our data centers, from build and decommissioning to day-to-day operations and cost management. This role offers a unique opportunity to manage infrastructure supporting a large-scale commercial mobile network and collaborate with various teams to drive cloud and AI infrastructure excellence.
Responsibilities
- Perform daily operations including service monitoring, incident management, maintenance coordination, change management, capacity planning, and vendor management.
- Manage data center infrastructure design and procurement across Japan, ensuring alignment with project timelines and requirements for build and decommissioning projects.
- Contribute to operational improvements, cost management, project support, and business planning based on experience.
- Collaborate with cross-functional teams to ensure seamless infrastructure integration.
Requirements
- Basic knowledge of data center facilities (racks, power, cooling, optical cabling, patch panels).
- Experience using multiple data centers as a tenant, including access control and hands-on work within data halls.
- Strong communication skills for effective coordination and negotiation with stakeholders.
- Proven experience as a team member on IT infrastructure-related projects.
- Approximately 5+ years of relevant professional experience.
- Professional proficiency in Japanese (JLPT N2 or above).
- Business-level English proficiency.
Skills
- Service monitoring
- Incident management
- Maintenance coordination
- Change management
- Capacity planning
- Vendor management
- Data center infrastructure design
- ITIL framework
- Budget planning
- Cost control
Location
- Japan
Work Type
- Full-time
Experience Level
- 5+ years of relevant professional experience
Education Level
- Relevant certifications such as ITIL, PMP, CDCP, DCPRO, or BICSI.
About the Company
- Cloud Platform Department provides end-to-end services for Rakuten Mobile’s virtualized infrastructure, from build to operations.
- The Data Center E&O Team manages the full lifecycle of our data centers—from build and decommissioning to day-to-day operations and cost management across ~40 sites nationwide.
- Our organization consists of over 140 professionals, including experts in virtualization, networking, hardware, field engineering, and project management.
- Many team members bring extensive experience from data center operators, telecommunications companies, and IT equipment vendors.