Reo Onozawa
Founder, Green Tea LLC
Former Nomura Research Institute Consultant
Green Tea LLC runs on one human and countless AI agents. We deliver value that scales without headcount — no bottlenecks, no bloat.
Started as a white-hat security consultant at Nomura Research Institute — penetration testing, vulnerability assessment, and risk quantification for financial institutions. GIAC GWAPT certified.
From there, built depth in machine learning applied to real business problems: supervised learning (demand forecasting, credit scoring, churn prediction), unsupervised learning (customer segmentation), time-series analysis, causal inference, and reinforcement learning. Not a pivot to AI — a progression through it.
Generative AI is the next layer of that stack. RAG, AI agents, MCP integrations — built and shipped in production. The security background means these systems are designed from an attacker's perspective, not hardened after the fact.
Certifications
Strengths
Requirements Definition
Getting to the real problem by engaging stakeholders directly. Using AI-driven prototypes to surface issues early and accelerate alignment.
System Design & Development
Designing systems from both attacker and user perspectives. Zero Trust architecture with a clear-eyed view of the security-usability tradeoff.
Operations Design
Building systems that stay monitored, survive attacks, and drive measurable outcomes. Evaluation metrics and improvement loops baked in from the start.
Interested in working together?
Get in touch