• Full-time

Publication date: 2026.06.24

[Primarily Remote] Cloud Infrastructure Engineer (Azure / Generative AI & RAG Infrastructure Setup)

  • System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
  • Tokyo
  • Salary 8 to 12 million yen
【リモートメイン】クラウドインフラエンジニア(Azure / 生成AI・RAG基盤構築)
職種Position System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
会社概要Company profile [Company Overview]
They leverage the power of AI and data to provide comprehensive solutions across three axes—management, business, and organization—to evolve companies' "decision-making mechanisms." They are not simply an analytics company, an advertising agency, or a SaaS vendor. They are a data company that "partners with ambitious companies and sees things through until results are achieved."

Their business is comprised of three main pillars:
① Data Utilization Consulting and Analysis Support Connecting Management and the Front Lines
Through the planning and execution of DX strategies and data utilization strategies, they build a consistent decision-making process between management and the front lines. Using KPI design, fact analysis, BI construction, and funnel decomposition, they achieve logical DX promotion without being overly reliant on on-the-ground intuition or overly theoretical.

② Marketing Strategy Execution and Technology Implementation Support for Maximizing LTV
In addition to advertising operations, CRM strategies, and social media utilization, they also utilize products such as generative AI and BI tools to support everything from acquiring new customers to strengthening engagement with existing customers. They implement sustainable business growth at the operational level.

③ Strengthening Organizations: Building In-House Development Support and Training Systems
Instead of outsourcing analysis and strategies, they aim for a state where "decision-making can be done according to their own will," and support the in-house development of data utilization and tool operation. By enhancing the self-sufficiency of the field, they enable the transformation of client organizations in the medium to long term.

Instead of repeatedly developing from scratch for each client, they have a versatile product platform and provide efficient and flexible support based on it. They have an engineering environment where you can lead the design and implementation of "usable AI" and "living data infrastructure" using their in-house developed "BI Suite" and "AI Craft."

【Company/Job Appeal】
As a 100% subsidiary of Mitsui & Co., they have a stable management foundation.
仕事内容Job description As a Cloud Infrastructure Engineer, you will design and build secure cloud environments—centered on Azure—to run generative AI-powered business products in the production environments of enterprise clients.

This is not a role focused merely on routine maintenance and operations. We are looking for an engineer who can determine how to implement AI applications within the context of a client's specific security requirements and network constraints, and who can drive the entire process from detailed architectural design and environment setup to the resolution of technical challenges.

In this role, you will work closely with business units, IT departments, and security teams at major enterprises. You will be responsible for defining the requirements for production-ready AI products—such as network, authentication, and authorization designs, as well as secure connectivity with Azure OpenAI and various business systems—and leading the implementation.

Rather than simply accepting client-specified conditions at face value, you will treat constraints as design parameters. Collaborating with application engineers and Project Managers (PMs), your role is to build a cloud foundation that enables the practical, long-term use of AI, moving beyond the Proof of Concept (PoC) stage.

# Key Responsibilities
* Design and build AI application infrastructure centered on Azure.
* Plan infrastructure configurations to integrate with Azure OpenAI, Azure AI Search, and various business systems.
* Design and coordinate network architecture using Private Endpoints, VNets, DNS, Firewalls, UDRs, etc.
* Design authentication and authorization mechanisms using Entra ID, OAuth, SAML, RBAC, Managed Identity, etc.
* Build application execution environments using Container Apps, App Service, ACR, Blob Storage, Key Vault, etc.
* Design system configurations that align with client security requirements, network constraints, and operational policies.
* Clarify technical issues and requirements in collaboration with application engineers, PMs, and the client's IT and security departments.
* Handle production deployment, connectivity testing, troubleshooting, log analysis, and the design of monitoring and operational workflows.
応募資格Requirement ▼ Required Skills
・Business-level Japanese proficiency (equivalent to JLPT N2)
・Experience designing and building cloud infrastructure using Azure
・Experience with network, authentication/authorization, and security design for enterprise-grade systems
・Practical understanding of Private Endpoints, VNets, DNS, Firewalls, RBAC, Entra ID, etc.
・Experience with deployment, connectivity testing, troubleshooting, and log analysis for applications running in production environments
・Experience driving projects forward while clarifying technical constraints and key issues with clients and internal team members

▼ Preferred Skills
・Experience building system infrastructure utilizing Generative AI, RAG, Azure AI Search, Azure OpenAI Service, OpenAI API, etc.
・Experience building and operating application execution platforms using Azure Container Apps, App Service, AKS, etc.
・Experience building infrastructure using IaC tools such as Terraform or Azure Resource Manager
・Experience designing secure cloud configurations utilizing Key Vault, Managed Identity, Private Link, etc.
・Experience designing for production operations, including monitoring, log design, backups, data deletion, and incident response
・Experience handling security checklists, risk assessments, and negotiations with client IT and security departments
・Experience in areas such as enterprise-scale systems integration (SI), IT consulting, cloud adoption support, or pre-sales engineering
日本語力Japanese level Business
雇用形態Employment type Full-time
勤務エリアLocation Tokyo
勤務時間Working hours Flextime system (7.5 hours of actual work; include
想定年収Salary 8 to 12 million yen
条件・待遇Condition Probationary Period: 3 months
Work Location: Tokyo; remote work available (Note: In-office attendance is encouraged on Wednesdays; in-office attendance is generally required for the monthly company-wide meeting).
Days Off: Full two-day weekend (Saturdays and Sundays), national holidays
Leave: Summer leave, year-end/New Year holidays, and other leave
Overtime: Yes (average of 20 hours per month)
Passive Smoking Prevention: No smoking indoors
Benefits: Comprehensive social insurance, commuting allowance (subject to company policy), and other benefits
選考についてProcess Number of openings: 1–2
Required documents: Curriculum vitae (CV) and resume
Online interviews: Available (final interviews for candidates in the Tokyo area are conducted in person)
Interview language: Japanese
Number of interviews/process: 1–4 interviews
*Subject to change based on hiring status or the individual candidate.
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