The Technology Platforms Division (TPD) drives the growth of Rakuten's ecosystem by delivering innovative, high-quality technology platforms characterized by integrated control and strategic partnerships.
Within TPD, the Cloud Platform Supervisory Department (CPSD) develops and manages Rakuten's state-of-the-art cloud platform, empowering global scalability and accelerating innovation across its diverse business units.
The Cloud Platform Enablement Department (CPED) drives Rakuten Group's global infrastructure strategy by building and operating a robust private cloud platform and supporting public cloud environments. We empower application engineers to build reliable and scalable systems while ensuring unified support and consistent quality across all departments.
Position:
Why We Hire
As public cloud adoption expands and grows more complex across the organization, there is an urgent need to define and drive a holistic architecture strategy across our multi-cloud environment. We currently manage over 50 operations across AWS, Azure, GCP, and OCI, and require a professional who can provide enterprise-level architecture design, standardization, and technical leadership based on a deep understanding of each cloud platform. We are looking for a Cloud Architect who can lead the entire organization in designing security guardrails, standardizing network architecture, and driving the Well-Architected Framework.
Position Details
As a technical lead within the CCoE, you will play a broad role spanning from defining the organization-wide architecture strategy across multi-cloud environments (AWS, Azure, GCP, OCI) to establishing and driving technical standards.
Key Responsibilities
1. Multi-Cloud Architecture Design & Standardization
Provide upper-level architecture reviews for service teams across multi-cloud environmentsDefine reference architectures for Landing Zones, account structures, and network design (VPCs, VPNs, Dedicated Interconnect, Cloud to Cloud Connectivity, hub-and-spoke, etc.)Conduct architecture reviews based on the Well-Architected Framework for AWS, Azure, GCP, and OCIProvide technical consulting on cloud migration and modernization plans for each Business Unit (BU)2. Governance & Security Architecture
Design, implement, and continuously improve the multi-cloud governance frameworkArchitect security guardrails and compliance policies (IAM, network controls, encryption, audit logging, etc.)Support the cloud-side implementation of Zero Trust Architecture and CSPM in collaboration with the dedicated security teamCollaborate with security and legal teams on risk assessment and remediation designProvide technical leadership for CCoE roadmap initiatives (Security Guardrails, Landing Zone, etc.)Drive codification and standardization of infrastructure architecture using IaC tools such as TerraformProvide architecture guidance on container platforms (Kubernetes), serverless, and managed service adoptionStandardize Disaster Recovery (DR), High Availability (HA), and scalability design4. Cost Optimization (FinOps)
Define FinOps strategy and design cost optimization architectureDesign cost allocation, tagging standards, and cost visibility mechanisms across multiple cloudsRecommend optimization of Reserved Instances, Savings Plans, and Committed Use DiscountsDrive architectural improvements to reduce data egress costs5. Technical Leadership & Enablement
Provide technical mentoring and architecture reviews for Cloud CoE engineersOperate an Architecture Review Board for internal cloud usersCreate and promote cloud architecture best practices and design guidelines across the organizationResearch and evaluate new technologies and services, and assess their integration into existing architectureDevelop and create e-Learning content6. Vendor Management & External Collaboration
Serve as the primary technical point of contact for cloud vendors (AWS, GCP, Azure, OCI) and build strong vendor relationshipsEvaluate new vendor services and roadmaps and determine their applicability for internal adoptionCollaborate with Co-CCoE organizations (equivalent CCoE teams in other groups/departments) to align architecture standardsWork with external partners on cross-group cloud strategy and governance initiativesMandatory Qualifications:
Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent practical experienceMore than 5 years of hands-on experience designing, building, and operating cloud infrastructure on AWS, Azure, or GCPExperience leading upper-level architecture design on at least one cloud platform (GCP, AWS, or Azure); willingness to learn additional cloud platforms is acceptableHands-on experience with Landing Zone and network design (VPC, VPN, hub-and-spoke, multi-region)Practical experience designing and implementing infrastructure using IaC tools such as TerraformExperience designing and implementing cloud IAM and security guardrailsProfessional-level or Specialty/Expert architect certification from AWS, Azure, GCP, or OCI (e.g., AWS Solutions Architect Professional, GCP Professional Cloud Architect, Azure Solutions Architect Expert, OCI Architect Professional)Strong communication skills, including the ability to explain technical concepts to non-technical stakeholdersBusiness-level English and Japanese communication skillsDesired Qualifications:
Experience designing multi-cloud architectures (2 or more providers)Experience presenting and driving cloud strategy to executives and non-technical stakeholdersExperience designing Kubernetes and container platform architecturesExperience implementing Zero Trust Architecture and CSPMHands-on FinOps experience (cost allocation design, tagging standardization, cost optimization)Experience with GCP Dedicated Interconnect and Shared VPC design, implementation, and operationsHands-on experience with OCI (Oracle Cloud Infrastructure)Experience operating an Architecture Review BoardPractical experience with DevSecOps and GitOpsExperience developing and creating e-learning contentExperience in technical negotiations and relationship building with multiple cloud vendors#engineer #infrastructureengineer #technologyplatformdiv