Available for remote engagements

RYAN Ginstrom

Fractional CTO · AI Advisory · Tokyo

Engineering leader with 20+ years building ML and AI systems at scale. I bridge deep technical depth with organizational leadership — and operate fluently in both English and Japanese business environments.

20+
Years ML &
software engineering
4
US patents in
NLP & conv. AI
EN
Native English
speaker
日本語
Business-fluent
Japanese
Currently working across
AI Platform Strategy RAG Systems ISO/IEC 42001 LLM Ops
01

SERVICES

01 — CTO
FRACTIONAL CTO

Technical strategy, team structure, and delivery governance for AI-focused startups and scale-ups. Especially strong for companies bridging Japan and global markets — I work the technical and business sides in both languages.

02 — DUE DILIGENCE
ML / AI DUE DILIGENCE

Technical evaluation of AI systems and teams for VC and corporate investors. Architecture review, ML ops maturity, risk assessment, and capability validation for pre-investment and post-investment engagements.

03 — GOVERNANCE
AI GOVERNANCE ADVISORY

Hands-on guidance for ISO/IEC 42001 implementation, audit trail design, and responsible AI frameworks for regulated industries — automotive, manufacturing, finance, and healthcare.

04 — ARCHITECTURE
TECHNICAL ARCHITECTURE

RAG systems, LLM ops infrastructure, workflow orchestration, and search/retrieval at scale. From whiteboard design through production deployment, with a focus on maintainability and observability.

02

EXPERTISE

AI & Machine Learning
  • LLM Systems & RAG
  • ML Ops & Evaluation Frameworks
  • Conversational AI & NLP
  • Vector Search & Hybrid Retrieval
  • Reinforcement Learning
  • Explainable AI & Auditability
Infrastructure
  • Kubernetes & Docker
  • Temporal (workflow orchestration)
  • CI/CD & Observability
  • ElasticSearch / OpenSearch
  • Kafka & Data Pipelines
  • Multi-tenant System Design
Languages
  • Python · FastAPI · Django
  • Go  ·  Kotlin  ·  C++
Patents
Systems and methods for natural language processing and classification
US-11301632-B2
Systems and methods for configurable messaging response-action engine
US-11106871-B2
Systems and methods for configurable messaging with feature extraction
US-11100285-B2
Systems and methods for automated question response
US-11010555-B2
03

EXPERIENCE

Jul 2025 – Present
Corpy & Co.
CTO / Board Director

Leading AI platform strategy, engineering transformation, and technical roadmap across automotive, manufacturing, and e-commerce sectors. Architecting CONFIDE, a multi-tenant RAG and workflow platform, and driving ISO/IEC 42001 AI management system compliance. Bilingual client engagement with Japanese manufacturers and enterprise stakeholders.

Aug 2021 – Sep 2025
Mercari
Tech Lead / Engineering Manager

Led founding team that integrated ML into search. Delivered Mercari's first production use of LLMs and first customer-facing LLM feature. Designed and implemented ML Ops infrastructure and A/B testing for models. Spearheaded image search feature development.

Oct 2019 – May 2021
LivePerson
Senior Software Engineer

Maintained high-volume ML systems with Kafka, Hadoop, Kotlin, ElasticSearch. Developed text intent platform for conversational automation. Built automated model training and deployment pipelines.

Dec 2015 – Oct 2019
Conversica
Tech Lead / Engineering Manager

Introduced ML-based conversation automation, improving NLP capabilities. Architected microservices-based AI system with Django and Docker/Kubernetes. Built CI/CD pipelines for AI models and self-learning systems using human feedback.

Mar 2011 – Dec 2014
Nintendo of America
Bilingual Engineer

Built NLP pipelines for multilingual document processing. Developed backend tools and translation support systems.

04

CONTACT

Available for remote fractional, advisory, and project-based engagements.

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Consulting Profile
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