会社名

楽天グループ株式会社

会社概要

未来を信じ、より良い明日を創っていく。
イノベーションを通じて、人々と社会をエンパワーメントする。私たちは、そんな想いを大切に世界の人々に喜びと楽しさを届けます。
楽天は、E コマース、FinTech、デジタルコンテンツ、通信など、70 を超えるサービスを展開し、世界10 億以上のユーザーに利用されています。
これら様々なサービスを、楽天会員を中心としたメンバーシップを軸に有機的に結び付け、他にはない独自の「楽天エコシステム」を形成しています。ダイバーシティ推進は、楽天にとって最優先の企業戦略のひとつです。従業員の出身は70カ国・地域以上。世界中からユニークで多様な文化的背景や視点を持つ優秀な人材が集まり、イノベーションの原動力になっています。社内カフェテリアにはベジタリアン、ハラル対応のメニューを用意。礼拝所（Prayer room）もあります。
また、仕事と育児の両立支援や、障がい者雇用・活躍促進も積極的に推進。社内のLGBT（※1）当事者やアライ（※2）に対して、情報共有やサポート体制の強化も進めています。誰もが自分らしく力を最大限発揮して働ける。それが楽天のダイバーシティです。

70を超えるサービスを提供し、世界30カ国にサービス展開拠点を持ち、従業員の出身国・地域数は100を超え、オープンポジション制度を活用して多様なキャリアを描くことができる点も魅力です。
フレックスタイム制度、事情に応じたリモートワークの活用が可能です。本社には託児所やフィットネスジム、三食無料で利用可能なカフェテリアが併設されるなど、社員を支える環境が整備されています。

ポジション

1030125　Technical Engineer, Second Line Support, BSS Operations [DevOps & Platform Maintenance] - BSS Ops Department (BSOPD)

仕事内容

Job Description:
Business Overview
The Technology Platforms Division (TPD) drives the growth of the Rakuten Ecosystem by delivering innovative, high-quality technology platforms characterized by integrated control and strategic partnerships.

Within TPD, the Telecom Business Application Supervisory Department (TBASD) develops and maintains a unified, high-quality Business Support System (BSS) for Rakuten Mobile. We deliver agile, scalable solutions across the customer lifecycle and continuously enhance system performance through close collaboration with stakeholders.

Department Overview
The Business Support System Operations Department (BSOPD) is responsible for operating a high-quality Business Support System (BSS) that integrates with the broader Rakuten Ecosystem, directly contributing to maximize Rakuten Mobile’s business. These BSS platforms are critical for managing telecommunication business operations. Additionally, we provide excellent customer support and facilitate all BSS integrations.

Position:
Why We Hire
We are looking for Entrepreneurial, Innovative, Growth-Oriented, and Customer-obsessed individuals to join our growing team to build the Telco of the Future.
We are a truly global organization, with team members from Japan, India, North America, South America, Europe, China, Korea, Australia, Africa, and more, shifting to a fast-paced, agile way of working.

Position Details
- This role contributes to the operational excellence of Rakuten's DevOps and Observability platforms. Key responsibilities include:
- Providing proactive system monitoring, initial alert handling, and first-level operational assistance.
- Conducting complex troubleshooting and developing automation solutions for platform efficiency.
- Actively managing application environments across DevOps and Observability platforms.
- Ensuring service continuity through diligent adherence to established runbooks and escalation processes.
- Collaborating closely with L3 support and development teams to ensure platform stability, efficiency, and continuous improvement.
- Participate in the on-call rotation for critical incidents, lead service restoration, and perform detailed Root Cause Analyses (RCA).
- Contribute to post-incident reviews, drive automation for recurring issues, and continuously enhance system resilience.
- Create and maintain runbooks, dashboards, and knowledge base documentation for operational readiness and training.
- Support regular maintenance, feature rollouts, and security patching for production and pre-production environments.

求める経験・スキル

Mandatory Qualifications:
1) Technical Expertise
- Containerization & Orchestration: Hands-on experience with Docker and Kubernetes (K8s) for managing containerized applications, including familiarity with Helm charts, ConfigMaps, and Secrets management for environment configuration.
- Certification: Certification in Kubernetes (CKA/CKAD) is a plus.
- CI/CD Automation: Proficiency in designing and implementing CI/CD pipelines using tools like Jenkins, GitLab CI/CD, or Azure DevOps. Knowledge of artifact management (e.g., Nexus, Artifactory) and understanding of CI/CD concepts to verify deployment success.
- Monitoring & Observability: Strong understanding of monitoring tools such as Prometheus and Grafana for real-time system observation, metrics collection, and alert tuning for production systems.
- Logging & Tracing: Skilled in centralized logging with ELK Stack (Elasticsearch, Logstash, Kibana) or Splunk, and experience with basic tracing tools like Dynatrace or AppDynamics. Ability to perform basic log analysis to identify potential issues.
- Scripting & Automation: Experience in scripting languages (Bash or Python) for automating deployment, maintenance tasks, and executing standard health-check scripts.
- Infrastructure as Code (IaC): Familiarity with Infrastructure as Code (IaC) principles and tools such as Terraform or Ansible.
- Cloud Platforms: Exposure to cloud services on AWS, Azure, or GCP.
- Certification: Certification in Cloud DevOps tools (e.g., AWS Certified DevOps Engineer) is a plus.
- Incident Management & Processes: Familiarity with incident tracking systems (e.g., ServiceNow, JIRA) and understanding of ITIL processes. Experience assisting with Root Cause Analysis (RCA) and system optimization.
- Operating Systems & Networking: Exposure to Linux system operations and basic networking concepts.
- Basic Container Knowledge: Basic knowledge of containerized environments (Docker/Kubernetes).

2) Domain & Methodological Knowledge
- Telecom BSS/OSS Systems: Strong understanding of customer-facing portals, CRM, order workflows, and the broader telecommunications BSS/OSS landscape.
- Site Reliability Engineering (SRE): Ability to define and monitor SLOs, SLIs, and SLAs to ensure service reliability and uptime targets. Familiarity with SRE best practices (e.g., Google SRE model) and error budget management.
- Hybrid/Multi-Cloud: Experience managing Kubernetes clusters and deploying applications in hybrid cloud or multi-cloud environments (AWS EKS, Rakuten Cloud Platform).
- Cost Optimization & Capacity Planning: Experience with cost optimization strategies and capacity planning in cloud environments.
- IT Governance: Familiarity with ITIL and ISO 27001 standards.

3) Professional Competencies
- Problem-Solving: Exceptional analytical and troubleshooting capabilities to resolve complex, time-sensitive issues efficiently.