楽天では、O2A (Order-to-Activate) エコシステムの安定性と運用効率を担う Lead Technical Support Engineer を募集しています。Java ベースのマイクロサービスおよび Order Management プラットフォームでの5年以上の実務経験が必須です。重大なインシデントの解決やシステムアーキテクチャの改善を主導し、チームの技術的成長を牽引できるリーダーを求めています。
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.
The BSS Ops 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.
We are seeking a highly technical, hands-on leader to own the stability and operational excellence of our O2A (Order-to-Activate) ecosystem. You will serve as the technical authority for high-impact production incidents while proactively driving systemic improvements. You will bridge the gap between reactive support and proactive engineering, leading initiatives that reduce technical debt, enhance observability, and optimize team performance.
Responsibilities
Lead Critical Incident Resolution: Personally drive the resolution of high-severity, multi-system failures. Manage the end-to-end incident lifecycle, from initial triage and communication to post-incident review.
Deep-Dive Analysis: Conduct expert-level Root Cause Analysis (RCA) on persistent order failures, leveraging deep knowledge of logs, databases, APIs, and microservices to identify systemic architectural or integration flaws.
Strategic Problem Management: Champion problem management by translating technical findings into actionable recommendations for Engineering and Product teams.
Lead Continuous Improvement: Proactively identify operational bottlenecks and lead initiatives to optimize processes, reduce manual toil, and increase system reliability.
Architectural Influence: Provide strategic recommendations to Product and Engineering to influence future design, architecture, and feature enhancements.
Operational Excellence: Lead the design and implementation of scalable monitoring solutions (APM, synthetic transactions) to shift from reactive troubleshooting to proactive detection.
Automation: Drive the development and implementation of automation tools for data repair, diagnostics, and routine operational tasks.
Technical Mentorship: Provide expert guidance to L1/L2 support engineers, fostering a culture of technical rigor and career growth.
Team Management: Oversee incident backlogs, define key operational KPIs, conduct performance reviews, and ensure high standards in knowledge management (runbooks, documentation).
Cross-Functional Liaison: Act as the primary technical SME, representing the support organization in architectural reviews and collaborating with Product, IT, and Network teams.
Bachelor's degree in CS/IT or related field.
More than 5 years of hands-on Java development (microservices/distributed systems).
More than 5 years in Order Management/Billing platforms with solution design experience.
Proficiency in Couchbase (N1QL, data modeling) and SQL.
DevOps tools experience (Ansible, Jenkins, Docker, Kubernetes).
Problem-solving - proven track record in complex RCAs.
Communication - ability to articulate technical issues to stakeholders and teams.
Operations continuous improvement.
Desired Qualifications:
Rakuten Crimson House (Head office)
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