Partnered directly with the firm owner to build client-facing scheduling plus the admin surface behind it.
- Eliminated calendar-sync latency with a cache-first architecture over incremental iCloud (CalDAV) and Google syncToken updates — staff see accurate schedules without waiting on full-calendar API responses.
- Kept a multi-tenant platform stable by systematically diagnosing timezone-aware RRULE expansion, Zoom OAuth expiry, and four-tier RBAC defects, preventing scheduling failures and access violations in production.
- Built an AI pipeline converting scanned PDFs into IFRS-validated Excel report sheets in a single run, with extraction logic driven by plain-English templates so accountants adapt the system without touching code.