Business-Driven
Fractional CTO
/ AI Technical Advisor
From AI-driven development to new business launches and cloud infrastructure.
I build systems that move businesses forward — bridging technology and strategy.
- 20+
- apps built & operated solo in ~5 months (one launch per week)
- 26 yrs
- across technology and business (since 2000)
- P&L
- leadership of a multi-hundred-million-yen business unit with dozens of staff
Supporting from a position that bridges technology and business
For 26 years since 2000, I have been involved in launching and driving technology, organizations, and businesses — as a development lead, business unit head, executive officer, outside director, and founder.
My work spans AI-driven development, cloud architecture, large-scale service operations, new business launches, restructuring outsourced development teams, and GPU/AI infrastructure planning.
"How do we launch this business?"
"How do we sustain operations with this team?"
Service Areas
AI-Driven Development Adoption
Designing development processes, role allocation, code review workflows, and quality management with tools like Cursor, Claude Code, and ChatGPT — as a practitioner who ships an app a week myself.
LLM Apps / AI Agent Development
Contract and partnership development of AI agents and LLM-powered SaaS and business systems — from concept refinement through PoC to production operations.
Fractional CTO / Technical Advisor
Bridging management and engineering to support technology strategy, team structure, hiring, architecture, and project management.
New Business MVP Support
From concept refinement and requirements definition to prototyping, cloud deployment, and initial operations — accelerating new ventures.
Cloud & Large-Scale Infrastructure
Infrastructure design, IaC, performance engineering, operational design, and load testing centered on AWS and Cloudflare.
Development Team Restructuring
Identifying issues in role allocation, knowledge silos, workflow bottlenecks, and quality concerns — then redesigning for execution.
GPU / AI Infrastructure Strategy
Supporting inference platforms, GPU servers, AI infrastructure, and data center planning from both business and technical perspectives.
Ideal for companies facing these challenges
- Want to transition to an AI-powered development workflow
- Need to launch a new business quickly
- Lack or need a stronger technical leadership role
- Experience a gap between management and engineering
- Want to restructure development or outsourced teams
- Need to redesign architecture for large-scale or high-traffic services
- Want upstream support for technology selection and architecture decisions
I can help from early-stage brainstorming through team design and concrete implementation planning.
Background
Due to confidentiality, publicly available details are limited. Based on the nature of your consultation, I can share relevant experiences.
Recent Work
Full-Stack In-House SaaS & Internal Platforms
Built solo and connected via SSO: a CSPM + cloud cost monitoring SaaS (AWS/GCP/Azure, LLM-based impact assessment, multi-tenant), an internal developer portal, a PMO dashboard, AI-powered deal matching, and a cloud CTI system.
20+ apps built and operated in production in ~5 months — one launch per week
Hub & Spoke Platform for Mass-Producing Business Apps
As a technical advisor, designed a monorepo platform that mass-produces 21 internal business apps (SFA, billing, BPM, LMS, and more) on a shared foundation — unified auth, database, CI/CD, and monitoring, architected for AI-agent-driven development.
21 apps built and operated in ~6 months
Contract Development of LLM Apps & AI Agents
Delivered LLM-powered products from concept to production: an AI agent for a major travel media brand, automated vulnerability impact assessment and IT audit workflows, and a learning platform with AI-powered Q&A.
End-to-end from concept refinement through PoC to production
AI-Driven Automation of Business Operations
Automated the operations of a business unit — attendance collection, workload aggregation, billing, weekly and board reporting, and Slack monitoring — with a suite of Python automation harnesses (roughly 10,000 lines). HR evaluation data entry included.
Running a business unit and shipping software at the same time
Public-Sector & Enterprise Large-Scale Systems
Feature development for a government-affiliated financial institution’s bond application system (Java/Spring Boot/Vue), leading a full engine migration of a mobile game operated for over a decade (including contract and acceptance scheme design), and developing and operating a programmatic ad platform (SSP/DSP).
From large-scale, long-lived system development to contract design
Regional DX & Event Platforms
Built and ran in production at real venues: a tourism booking system (multilingual, inbound-ready), an LMS for regional reskilling programs, and operations apps for large-scale live events (trilingual).
Systems used in the field, built on short timelines
Company names and contract values are withheld for confidentiality. I can share more detail within permissible limits during a consultation.
How We Can Work Together
Technical / Business Advisor
Supporting technology strategy and business initiatives through regular meetings and brainstorming sessions.
Fractional CTO
Serving as a part-time technical leader, typically 1–2 days per week.
Project Partnership
Intensive, time-bound support for new ventures or critical initiatives.
Outside Director / Advisor
Ongoing involvement spanning management, business, and technology.
Engagement frequency and duration can be flexibly adjusted based on the theme and phase.
What matters most about technology is not adoption itself, but how it drives business forward. I keep both the boardroom and the factory floor in view — and translate strategy into something that actually runs.
Get in Touch
Whether it's AI adoption, new business planning, technology strategy, team structure, or cloud infrastructure — feel free to reach out even at the early conceptual stage.
Start with your challenges or ideas at any level. I'll propose an engagement model that fits your needs.