Reo Onozawa
Founder, Green Tea LLC
Former Nomura Research Institute
Started as a white-hat hacker at Nomura Research Institute, then built hands-on experience as a machine learning engineer and a full-stack engineer. Now develops products centered on cyber × physical security.
With both AI context and security expertise, designs, builds, assesses, and fixes systems from an attacker's perspective. As a certified international bodyguard (INTCPO), that protective skill extends to the physical world — defending Japan's mission-critical systems across both physical and cyber domains.
Certifications
Career
Security Engineer
Started as a white-hat hacker. Consistently handled the assessments required to meet strict financial-sector standards such as PCI DSS and FSA guidelines. GIAC GWAPT certified.
Machine Learning Engineer
Applied supervised learning (demand forecasting, credit scoring, attrition prediction) along with unsupervised learning, time-series analysis, causal inference, and reinforcement learning in practice. Carried that same context straight into generative AI implementation (RAG, AI agents, MCP).
Forward Deployed Engineer
Embeds into the client's organization, managing the project while handling development end to end. Supports assessment, design, implementation, and adoption. Registered Scrum Master certified.
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