FOUNDER
Hiroyuki Tsuchida
Internal Audit × AI × Global GRC
Proving the intersection of AI and internal audit, from Silicon Valley.
Hiroyuki Tsuchida began his career as a software engineer, then worked in internal audit and GRC consulting at PwC and Deloitte. He went on to lead internal audit at a globally operating tech startup, and most recently served as CEO of a Silicon Valley-based consulting firm developing AI-powered internal audit and GRC solutions. In 2026 he founded Polarys & Company, an AI-native internal audit and GRC firm.
His focus is AI × internal audit and the audit of overseas subsidiaries. He is the author of “The AI-Driven Internal Audit” (US), and a Japanese-language book on internal audit in the AI era publishes in October 2026. He runs the internal audit community IA Insight Lab, publishing daily, and works to connect American internal audit thinking with the practice of Japanese companies.
Audit Beacon Award 2025 — one of 12 honorees worldwide for outstanding year-round contributions to internal auditing.
CIA · CISA · CFE · Registered Management Consultant (Japan). MBA Candidate, UC Berkeley Haas.
Three Peaks
Three Peaks
01 — MASTERY
A leading internal auditor
Active practitioner
An active internal auditor who still leads multiple internal audits every year, upholding global standards of audit quality in practice. CIA, CISA, and CFE.
02 — TECHNOLOGY
A hands-on technologist
Engineer turned AI implementer
Started as a software engineer, with technology underpinning a career of more than 20 years. Tracks frontier AI from Silicon Valley and implements it in internal audit — building applications with his own hands. Author of “The AI-Driven Internal Audit” (US, Amazon bestseller).
03 — GLOBAL
A global internal auditor
Audit Beacon Award 2025
Has led overseas subsidiary audits in more than 20 countries, primarily for global manufacturers. MBA Candidate at UC Berkeley Haas. Attends the IIA International Conference in person every year, bringing global developments back to practice in Japan.
Career
Career
ENGINEERING
Began his career as a software engineer
Started out in software engineering — a technical foundation that now underpins his work on AI and audit.
AUDIT & CONSULTING
Internal audit & GRC at PwC and Deloitte
Built practical experience in internal audit and GRC consulting at PwC and Deloitte.
GLOBAL TECH
Head of Internal Audit at a global tech startup
Led internal audit at a globally operating tech startup, covering sites across the US and Japan.
SILICON VALLEY
CEO of an AI × GRC solutions firm
Served as CEO of a Silicon Valley-based consulting firm developing AI-powered internal audit and GRC solutions.
INDEPENDENT
Polarys & Company (incorporated August 2026)
Founded Polarys & Company, an AI-native internal audit & GRC firm. Operations commence on September 1, 2026.
Community
Giving First
He runs “IA Insight Lab”, delivering the latest of the world’s internal audit thinking to Japanese readers for free — published daily for 500+ consecutive days, with 982 readers and 191 paying members. It has grown into one of the largest internal audit communities in Japan, alongside free volunteer study groups.
Note — Daily
IA Insight Lab
Articles on internal audit × AI, published daily for 500+ consecutive days. 982 readers, 191 paying members. In Japanese.
→YouTube — Weekly
HIRO・AI時代のガバナンス研究所
A weekly video series on governance in the AI era. In Japanese.
→Journal — Daily
GRC Lighthouse
A daily journal on internal audit and GRC (coming soon). The newsletter is distributed from there.
Internal audit is his life’s work — and, honestly, his hobby. He built this firm to enjoy it to the fullest: to lift the whole profession, and to reinvent internal audit with AI. The full manifesto is on the North Star page (Japanese).