Senior Quality Assurance Engineer

Why should you choose us?

Rakuten Symphony is reimagining telecom, changing supply chain norms and disrupting outmoded thinking that threatens the industry’s pursuit of rapid innovation and growth. Based on proven modern infrastructure practices, its open interface platforms make it possible to launch and operate advanced mobile services in a fraction of the time and cost of conventional approaches, with no compromise to network quality or security. Rakuten Symphony has operations in Japan, the United States, Singapore, India, South Korea, Europe, and the Middle East Africa region. For more information, visit: https://symphony.rakuten.com

Building on the technology Rakuten used to launch Japan’s newest mobile network, we are taking our mobile offering global.

To support our ambitions to provide an innovative cloud-native telco platform for our customers, Rakuten Symphony is looking to recruit and develop top talent from around the globe. We are looking for individuals to join our team across all functional areas of our business – from sales to engineering, support functions to product development.

Let’s build the future of mobile telecommunications together!

We are seeking a Highly skilled Kubernetes and Linux Administrator with extensive experience in DevOps practices, cloud infrastructure management, and troubleshooting complex system issues. Adept at designing, deploying, and maintaining containerized applications in production environments, ensuring high availability, scalability, and performance optimization. Strong expertise in CI/CD pipelines, automation, monitoring, and debugging with a focus on delivering reliable, secure, and efficient infrastructure solutions.

Required Technical Skills:

• OS:

  Linux (RHEL, Ubuntu, CentOS), Windows Server basics

• Containers & Orchestration:

  Docker, Kubernetes, Helm, Kustomize

• Scripting:

  Bash, Python, PowerShell (basic)

• CI/CD Tools:

  Jenkins, GitLab CI/CD, GitHub Actions

• Cloud Platforms:

  Baremetal , private Cloud, AWS

• Configuration Management & IaC:

  Ansible, Terraform

• Monitoring & Logging:

  Prometheus, Grafana, ELK, CloudWatch

• Version Control:

  Git, GitHub, GitLab

• Networking:

  TCP/IP, DNS, Load Balancers, Firewalls

• Debugging Tools:

  kubectl, docker logs, systemctl, journalctl, strace, perf

Professional Highlights

• Designed and deployed production-grade Kubernetes clusters with high availability and auto-scaling.
• Implemented CI/CD pipelines automating build, test, and deployment, reducing release time by 40%.
• Monitored and maintained Linux servers and containerized environments, improving system uptime and performance.
• Debugged complex application and infrastructure issues using logs, metrics, and tracing tools, reducing incident resolution time.
• Collaborated with development teams to containerize legacy applications, enabling smooth migration to cloud-native environments.
• Automated infrastructure provisioning using Terraform and Ansible, ensuring repeatability and consistency across environments.

Key Responsibilities:

• Kubernetes & Containerization: Cluster setup, Helm chart management, Kubernetes resources, namespaces, deployments, services, ingress, and RBAC.
• Linux Administration: System configuration, shell scripting, process and resource management, performance tuning, log analysis, and security hardening.
• DevOps Practices: CI/CD pipeline creation and maintenance (Jenkins, GitLab CI, GitHub Actions), automated deployment, infrastructure as code (Terraform, Ansible).
• Cloud & Virtualization: Docker, and VM orchestration.
• Monitoring & Logging: Prometheus, Grafana, ELK stack, CloudWatch, and alerting systems.
• Debugging & Troubleshooting: Root cause analysis of system failures, application errors, and container orchestration issues.
• Collaboration & Agile: Experience working in cross-functional teams, Agile environments, and implementing best practices for scalable infrastructure.
• Experience in testing tools like robot to frame test cases

Certifications (Preferred)

• Certified Kubernetes Administrator (CKA)
• Red Hat Certified System Administrator (RHCSA)/RHCE
• Docker Certified Associate (DCA)