Career History
LeapInsight Inc. CEO [ 2025/02 - Current ]
- Development and provision of systems utilizing generative AI
- Business automation AI agent systems
- Automatic generation of various documents and reports utilizing internal company data
- Project management and email correspondence, etc.
- Dify infrastructure
- YouTube data analysis platform
- Contract review system
- AI Agent automatic performance evaluation / automatic prompt tuning system
- Advisory services for organizational development, profit margin improvement, and performance/cost optimization
**Ginco Inc. [2017/12 - Present]**
- Platform Department (formerly SRE Department) Director / Senior Engineer [-Present]
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Main responsibilities:
- Annual roadmap formulation/execution
- Recruitment / Training
- Globalization
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Introduced bare metal to blockchain node infrastructure [2024]
- Reduced infrastructure costs by 40%, saving 84 million yen annually
- Reduced API cost per RPC by 1/2 to 1/4
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Department globalization [2023-2024]
- Hired 6 overseas engineers (India)
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Revamped blockchain node infrastructure and migrated to Google Cloud [2023]
Google Cloud Day ’23 Tour
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Established SRE Department [2021]
- Formulated team mission and OKRs, built a self-directed team
- Implemented SLOs and built SLO dashboard, achieving continuous improvement in collaboration with management
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SLO improvement [2020]
- Built monitoring infrastructure
- Improved API response latency by 5x
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Cost reduction [2020]
- Reduced infrastructure costs by 55% without performance degradation
- Tech Lead [-2019/12]
- Launched enterprise crypto asset wallet system
- Responsible for requirements definition, backend and infrastructure design and development
- Newly adopted gRPC and microservices architecture
- Balanced development scale and speed
- Service division allowed non-backend engineers to participate in development
- Backend Engineer [-2018/12]
**MC DIGITAL Inc. [2021/03-2024/04] (Contract)**
- Architect
- Design and development of large-scale data infrastructure (data lake, ETL, data warehouse)
- Design and development of ML systems (infrastructure)
- SRE
- Improved incident response
- ML systems (AI Platform, Airflow, Dataflow)
- Performance improvement
- Test implementation
- CI/CD
- Definition and monitoring of reliability
- Management support
**Recruit Holdings Co., Ltd. [2017/04 - 2018/03]**
- Implemented framework, developed authentication, and established development guidelines for new Air series products
- Responsible for backend development of Air Weight
Presentations and Articles