Process semi-monthly US payroll for 3,000+ employees using Workday; handle new hires, terminations, tax and 401(k) feeds, garnishments, retro adjustments, and timesheets. Resolve discrepancies, run audits, support SOX and 401(k) audits, process equity transactions (RSUs/options), respond to payroll and government inquiries, and provide administrative support for Canada and LATAM while partnering with People and Finance teams.