Senior Manager, HR Operations

Join to apply for the Senior Manager, HR Operations role at ATG (Auction Technology Group) Auction Technology Group (ATG) is transforming the multi‑billion‑dollar global auction industry. Our platforms connect thousands of auction houses with buyers in over 170 countries, powering more than $15 billion in annual sales. Through innovative online auction technologies, we help auctioneers expand their reach, boost efficiency, and maximize value—while giving bidders unrivaled access to rare and specialized items. As a publicly traded company, ATG has scaled from $18 million to $170 million in revenue, with sustained growth beyond the pandemic. We’re modernizing one of the last industries to fully go digital—building a global, category‑defining business in the process. What You’ll Do As a Sr. Manager, HR Operations, you’ll drive the programs and processes that form the backbone of our North America HR operations. You’ll manage a small team and will oversee global contractor management, North America payroll and associated systems—ensuring compliance, operational excellence and strong employee experience. This is a hands‑on, high‑impact role for someone who can think strategically while managing complex details with precision. Key Responsibilities Global Contractor Management Build and implement a global contractor program across the US, EU, Philippines, and additional regions. Design end‑to‑end workflows (procurement, onboarding, access, renewals, offboarding, compliance). Own contractor classification and ongoing compliance monitoring (e.g., IRS Common Law, IR35). Partner closely with Finance, Legal and IT to streamline systems, approvals, and payment processes. Maintain a contractor system of record and catalogue of approved agencies. Create manager training, policy documentation, and regular audits to reduce misclassification risk. Act as the senior escalation point for US payroll and compliance matters, including taxation questions, adjustments, garnishments, and audits. While you will not perform tax calculations or own statutory tax compliance, you are expected to recognize when earnings, payments, or benefits may have tax implications and partner with ADP, Finance/Accounting and external partners to ensure they are handled correctly. Provide governance and controls over US and Mexico payroll processed by internal specialists and external vendors. Lead quarterly and year‑end payroll reviews with Finance and ADP, including W‑2 oversight and support for payroll‑related audit requests. Ensure proper recording and payroll treatment of equity‑related activity (RSU grants, vesting events, and ESPP purchases) and confirm accuracy in pay and year‑end tax forms. Ensure alignment between payroll, HRIS, benefits, and timekeeping to maintain accurate deductions and eligibility. Manage PEO relationships and ensure accurate onboarding, separations, compensation and benefits processing. Ensure compliance and audit readiness of employee files (I‑9s, offer letters, payroll forms, tax elections, benefit enrollments, contractor documentation). Partner with IT, Finance, Legal and Systems teams to evaluate opportunities to streamline access management, onboarding/offboarding workflows, and system integrations. Own relevant HR policies and ensure they are compliant, updated, and clearly documented. Create and maintain HR Ops documentation including SOPs, process maps, manager toolkits, and employee guidance. Identify operational risks and implement process improvements across payroll and contractor workflows. Key Requirements 8+ years of HR operations, payroll, or HR compliance experience – including multi‑state US payroll and hands‑on experience building or managing contractor/contingent workforce programs (classification, onboarding/offboarding, vendor/agency management). Global exposure a strong plus. Experience overseeing payroll vendors and/or PEOs, including controls, governance, and audit support. Strong working knowledge of US payroll practices and regulations, with comfort escalating technical tax questions to Finance/ADP. Familiarity with equity compensation in payroll (RSUs, ESPP, year‑end reporting). Strong HRIS/payroll systems experience and ability to improve end‑to‑end processes across payroll, timekeeping, and benefits. Proven ability to work cross‑functionally with Finance, Accounting, Legal, and IT, and to communicate complex topics clearly to managers. Experience managing or informally leading an HR Operations and/or payroll‑focused team. Seniority level Mid‑Senior level Employment type Full‑time Job function Human Resources Industries: Internet Marketplace Platforms #J-18808-Ljbffr