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Yamashin LaboratoryResume & Portfolio
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RESUME & PORTFOLIO Public masked version

Shin Yamaguchi Shin Yamaguchi

Software engineer

Representative member

Focused on distributed cloud and AI,
I work on the design, development, and operation of business systems.

Explore development work Explore the 3D research city
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Shin Yamaguchi character illustration
Shin Yamaguchi Software engineer
Aki Amo
Representative member

Technology and design philosophy

4 core domains / 9 areas

Four areas of expertise connecting design, implementation, and operations.

View the architecture from design through operations
PHASE 01

Upstream design and formal verification

Mathematical specification checking and source-of-truth management
CUE & Quint source of truth

Static contract source of truth and dynamic state machine

Apalache mathematical model checking (quint verify)
Zero counterexamples and automatic type derivation

Downstream Proto / TypeScript type derivation and strict AI gates

Deterministic builds
PHASE 02

Build and CI/CD platform

Deterministic multi-cloud
Bazel × BuildBuddy

Distributed remote cache and parallel tests

Separate required checks for Actions and Cloud Build
Instant delivery with Workers Builds

Automatic global deployment to the edge with zero delay

Automatic production deployment
PHASE 03

Production operations and self-healing

Sentry monitoring and AI auto-healing
Real-time Sentry monitoring

Immediate detection of production exceptions and performance degradation

Turn off feature flags immediately without waiting for human intervention
AI patches and CI safeguards

Safe recovery through autonomous fixes and regression-test verification

FOUNDATION INFRASTRUCTURE
Home and company on-premises Linux server (always-on infrastructure, 24 hours a day, 365 days a year)

In-house infrastructure that supports the entire pipeline and continuously runs AI inference, embeddings, and monitoring jobs

Continuous monitoring by autonomous AI agents Continuous repository monitoring and automatic task execution with cron / systemd schedulers
High-volume vector embedding (Embedding) Process large-scale data transformations and inference locally, then securely sync highly confidential data to the cloud
Hybrid development and previews Reduce cloud dependency and establish a secure, ultra-fast iterative verification cycle
Read FLARES LLC’s detailed technical documents and architecture guides (flares.jp)

Development projects

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Technology stack

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Career history

    Certifications

      Flagship shared business platform
      In active development and rolling out in stages Cloud Spanner distributed platform (UBOS)

      A shared platform that brings work together and resolves real-world operational friction.

      Designed and built a shared business platform from the ground up around Google Cloud Spanner’s strong consistency and distributed scalability, standardizing multitenancy, event sourcing, tamper-resistant audit logs, and RBAC. It supports 6 apps for private-sector organizations and 14 for local governments, and represents the culmination of a next-generation architecture in which people and autonomous AI agents work together.

      Cloud Spanner Collaboration with autonomous AI agents UBOS shared business platform React Router v8 Cloudflare Workers 14 local-government apps / 6 private-sector apps
      View product information toolbox.flares.jp
      YAMASHIN LABORATORY

      Yamashin Laboratory

      Room to grow in many different ways Grow colors with dx

      Yamashin Laboratory uses AI and software as tools to
      find challenges in work and learning, think them through, experiment, and turn ideas into practice.

      AI Software Business improvement Digital transformation in education Data platforms Shared platform design
      Lab Team & Companions:
      Shin Aki Amo
      Shin / Aki / Amo
      CONTACT

      Consultation and inquiries

      Even if you have not organized your thoughts yet, feel free to tell us what is on your mind.
      Drawing on attentive communication skills developed through vocal performance and music education, I listen closely without jargon and help you decide how to proceed and what to prioritize.

      Open the inquiry form View FLARE TOOLBOX product information (toolbox.flares.jp)