Join a leading global technology and e-commerce company as a Cloud Operations Administrator within the Cloud Services Department. As part of the Container Platform Group, you will help operate and maintain one of the largest enterprise Kubernetes platforms in Japan, supporting more than 100 Kubernetes clusters and 10,000+ nodes powering mission-critical services across a global digital ecosystem.

This role offers an excellent opportunity for infrastructure engineers with expertise in Kubernetes, Linux, Cloud Infrastructure, and Platform Operations to work in a cloud-native environment while building a long-term career with strong potential for permanent employment.
Key Responsibilities

• Operate, maintain, and continuously improve large-scale Kubernetes container platforms supporting enterprise cloud services.
• Create and maintain Standard Operating Procedures (SOPs), operational documentation, and change management processes.
• Provision, scale, upgrade, and decommission Kubernetes clusters and infrastructure nodes.
• Monitor platform health, investigate system alerts, troubleshoot incidents, and ensure high platform availability.
• Perform operating system updates, middleware upgrades, and security patch management to maintain infrastructure compliance.
• Execute scheduled infrastructure maintenance and production releases during planned maintenance windows.
• Provide second-level engineering support for complex infrastructure issues escalated from first-line support teams.
• Collaborate with engineers and project managers to improve operational efficiency, automation, and platform reliability.

Required Skills and Qualifications Experience:

• Minimum 3 years of experience operating large-scale cloud infrastructure, telecommunications platforms, financial systems, or other mission-critical enterprise environments.
• Valid Certified Kubernetes Administrator (CKA) certification, or willingness to obtain certification within three months of joining.
• Experience administering Kubernetes, Linux servers, and enterprise infrastructure environments.
• Experience supporting infrastructure maintenance, system upgrades, incident management, and production operations.
• Ability to support scheduled late-night maintenance windows when required.
• Strong understanding of cloud-native infrastructure and container orchestration.

Soft Skills:

• Strong sense of ownership and accountability for production systems and operational excellence.
• Excellent documentation, change management, and organizational skills.
• Strong analytical thinking and troubleshooting capabilities.
• Collaborative mindset with the ability to work effectively across engineering teams.
• Passion for continuous learning and career growth in cloud infrastructure and platform engineering.
• Customer-focused approach with a commitment to delivering reliable infrastructure services.

Language Requirements:

• Japanese: Basic Level
• English: Business Level

Preferred Skills & Qualifications

• Bachelor's or Master's degree in Computer Science, Engineering, or a related technical discipline.
• Experience automating infrastructure operations or developing enterprise applications.
• Strong understanding of TCP/IP networking and enterprise network fundamentals.
• Hands-on experience with monitoring and observability platforms such as Prometheus, Grafana, Cortex, Elasticsearch, or Kibana.
• Experience working with Istio, service mesh technologies, or Kubernetes networking.
• Experience with private cloud or public cloud platforms is advantageous but not essential.

About the Company
Our client is a globally recognized technology and e-commerce leader driving digital innovation from its Tokyo headquarters. The Cloud Services Department delivers the foundational cloud platform, compute resources, container orchestration, storage, and infrastructure services that support hundreds of engineering teams developing next-generation digital products used by millions of customers worldwide.

The company promotes an engineering-first culture focused on cloud-native technologies, automation, operational excellence, and continuous innovation.
Why You'll Love Working Here

• Operate one of Japan's largest enterprise Kubernetes environments with more than 100 clusters and 10,000+ nodes.
• Work in a cloud-native engineering organization focused on automation, scalability, and operational excellence.
• Develop expertise in Kubernetes, Istio, Linux, Cloud Infrastructure, and Platform Engineering.
• Collaborate with experienced engineers in a highly international and diverse working environment.
• Clear career progression with strong potential for conversion to a permanent employee.
• Gain hands-on experience with large-scale cloud infrastructure supporting millions of users.
• Modern Tokyo office with excellent learning and professional development opportunities.

Don't Miss Out - Apply Now!