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ATG (Auction Technology Group) · 3 weeks ago

Senior Manager, HR Operations

United States

Full-time

Remote

Senior Level, Lead/Staff

8+ years exp

Auction Technology Group (ATG) is transforming the multi-billion-dollar global auction industry. As a Sr. Manager, HR Operations, you’ll drive the programs and processes that form the backbone of our North America HR operations, overseeing global contractor management and North America payroll to ensure compliance and operational excellence.

AuctionsE-CommerceOnline PortalsSocial MediaSoftware

Hiring Manager

Elizabeth Ostrander

Responsibilities

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

Qualification

HR operations experienceUS payroll knowledgeContractor managementPayroll vendor oversightHRIS systems experienceProcess improvementCompliance knowledgeEquity compensation familiarityCross-functional collaborationTeam management

Required

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

Company

ATG (Auction Technology Group)

A global technology company with over 350 employees, ATG is transforming the way billions of pounds, euros and dollars worth of items are bought and sold globally via auction.

Founded in 1971

London, England, GBR

201-500 employees