Senior Payroll Specialist

StackAdapt is the leading technology company that empowers marketers to reach, engage, and convert audiences with precision. With 465 billion automated optimizations per second, the AI-powered StackAdapt Marketing Platform seamlessly connects brand and performance marketing to drive measurable results across the entire customer journey. The most forward-thinking marketers choose StackAdapt to orchestrate high-impact campaigns across programmatic advertising and marketing channels.

What You'll Be Doing:

• Own end-to-end payroll processing for 6 global entities across the UK, Ireland, Germany, Singapore, Japan, and Australia, as well as EOR employees managed through Deel, ensuring accurate and timely payroll delivery each cycle.
• Manage and monitor multi-jurisdiction payroll compliance, including payroll taxes, statutory requirements, filings, year-end activities, and regulatory changes across supported countries.
• Perform and oversee payroll reconciliations, variance analysis, payroll controls, and exception handling to identify and resolve issues before payroll is finalized.
• Manage relationships with external payroll providers and partners, including issue resolution and service delivery.
• Support payroll audits, statutory requirements, reporting, and year-end activities across supported jurisdictions.
• Partner with Finance, People Experience, and Legal to resolve complex payroll matters and support a strong employee experience.
• Identify opportunities to improve payroll processes, controls, reporting, and workflows, including leveraging automation and AI-enabled tools to reduce manual reporting and reconciliation activities.
• Partner with the Finance team on the ongoing payroll transformation, including process redesign, data migration, configuration validation, parallel testing, UAT, and implementation activities related to the transition to Rippling.
• Proactively identify payroll risks and escalate complex or high-impact issues with clear recommendations and supporting analysis.

What You'll Bring to the Table

•  3+ years of hands-on UK payroll experience, with experience managing multi-entity or global payroll operations.
•  Strong knowledge of payroll compliance, reconciliations, controls, and statutory requirements.
•  Prior experience with payroll platforms and EOR providers (experience with Deel, ADP Workforce Now, ADP Celergo, and/or Rippling is an asset).
•  Strong analytical and problem-solving skills, with the ability to independently investigate and resolve payroll issues.
• Excellent organizational and communication skills, with the ability to manage multiple deadlines and work cross-functionally.
• Experience with payroll transformation, system implementation, automation, or process improvement is an asset.