Automated AP close: 3-way match, duplicate-payment detection, GRNI accrual, GL tie, vendor recon, intercompany stress test. Python, 35 tests in CI.

Simulated SOX ITGC control assurance lab with evidence workflows, control testing, remediation tracking, CISA KEV enrichment, anomaly detection, NIST/ISO mapping, and Grafana dashboards.

Rysqer — why ICFR execution breaks in SOX environments.

Rysqer — ICFR operating model. SOX execution, not documentation.

Accounting & audit prompt templates for reference search, workpaper comments, and client communication — designed for K-IFRS/ICFR practice

Automated AR month-end close engine: subledger-to-GL reconciliation, bad-debt reserve, SOX-style controls, and an independent reviewer that catches preparer errors. Python.

Expert SOX 404 ITGC compliance guidance as a Claude Skill. PCAOB AS 2201, COSO 2013, Big Four audit methodology, plus a Build Chain of Custody pattern for modern engineering.

Rysqer ICFR operating model — why SOX execution breaks between ownership, evidence and testing.