Ops & Infrastructure Engineer (m/f/d)

About the company -

Rakuten Symphony is a Rakuten Group company, providing global B2B services for the mobile telco industry and enabling next-generation, cloud-based, international mobile services.

Building on the technology Rakuten used to launch Japan’s newest mobile network, we are taking our mobile offering global. Let’s build the future of mobile telecommunications together!

Job Purpose -

This role supports day‑to‑day operations of the engineering lab, including access management, cluster operations, networking, automation, monitoring.

Key Responsibilities:

The Ops & Infrastructure Engineer is responsible for managing day‑to‑day operations of the engineering lab, including access management, cluster operations, networking, automation, monitoring, and test setup preparation. This role requires broad technical knowledge across Linux, networking, scripting, virtualization, Kubernetes, Android tools, and telecom/OSS systems. The engineer ensures smooth operation of lab infrastructure, supports internal teams, and maintains accurate documentation and workflows.

Required Knowledge, Skills & Experience:

• Basic to intermediate networking (L2, IP, routing).
• Linux and windows administration basic.
• Scripting (Python, Bash) basic.
• Kubernetes basics (pods, deployments, logs, namespaces) basic.
• Virtualization experience.
• Basic workflow automation.
• Telecom/OSS fundamentals basic.
• Strong documentation and organizational skills.
• Scripting (Python, Bash).
• Kubernetes and docker basics (pods, deployments, logs, namespaces).
• Experience with CI/CD or DevOps tools.
• Knowledge of monitoring tools (Prometheus, Grafana).
• Experience with automation frameworks.
• Understanding of cloud platforms (AWS, Azure, GCP).

Key Interfaces for Role:

IAM & Access Management

• Manage user access to clusters, servers, Kubernetes namespaces, and lab systems
• Handle IAM workflows (LDAP/AD/Keycloak/SSO)
• Maintain access logs and follow security policies
• Create and manage role‑based access for lab environments

Networking & Connectivity

• Troubleshoot L2 issues (Create workflow for automating Monitoring)

Linux & Server Operations

• Perform basic Linux administration (logs, services, permissions, networking)
• Servers (IP, hostname, RAID, BIOS, NIC bonding)
• Manage VM deployments, snapshots, and resource allocation

Kubernetes & Cluster Operations

• Provide L2 support for Kubernetes clusters
• Check pod logs, restart deployments, manage namespaces
• Support cluster access, kubeconfig management, and RBAC
• Assist with cluster monitoring and troubleshooting

Automation & Scripting

• Write scripts (Python/Bash) to automate repetitive tasks
• Build workflow automation for lab operations
• Integrate automation with Jira, monitoring tools, or OSS systems

Telecom & OSS

• Work with OSS/NMS tools for alarms and monitoring
• Assist in troubleshooting network elements and lab nodes

Monitoring & L2 Support

• Monitor lab systems, clusters, and network health
• Respond to alerts and perform first‑level troubleshooting
• Escalate issues to L3/engineering when needed
• Maintain dashboards and monitoring tools

Key Performance Indicators:

• Broad technical knowledge across multiple domains.
• Hands‑on, practical, and comfortable in lab environments.
• Strong troubleshooting mindset.
• Able to work independently and support multiple teams.
• Organized, detail‑oriented, and proactive.