Payroll Specialist- Temporary

We're looking for a detail-oriented and compliance-focused Payroll Specialist to join our Finance team on a temporary basis to support a high-priority initiative involving the creation of a new US LLC, the wind-down of the existing US Branch, and the end-to-end implementation of a new global payroll provider. This role will work closely with the Finance, Legal, and People Operations teams to ensure seamless execution across all project workstreams. You'll collaborate with external advisors, payroll vendors, and internal stakeholders to meet regulatory deadlines and ensure compliance at every stage. This role reports to the Senior Global Payroll Manager.

StackAdapt is a Remote First company, we are open to candidates located anywhere in Canada for this position.

What You'll Be Doing:

• Support the payroll and compliance workstream for the US Branch to US LLC transition.


• Assist with deregistration and final filings for the existing US Branch across ~36 state and local jurisdictions.


• Execute state and local payroll tax registrations for the new US LLC.


• Assist with payroll setup, tax configuration, testing, and initial processing under the new entity.


• Collaborate with internal teams (Tax, Legal, HR, Finance) and external partners (ADP, tax agencies) on transition deliverables.


• Track deadlines, dependencies, filings, registrations, and open items throughout the transition and identify and escalate risks or compliance gaps.


• Support the payroll implementation workstream for the migration of StackAdapt's entities to a new global payroll provider following the US LLC transition.


• Support  implementation activities including data preparation and migration, payroll configuration, integration coordination, validation, testing, parallel payroll runs, issue resolution, and go-live readiness.


• Coordinate with the global payroll provider, internal stakeholders, and payroll teams across multiple countries to ensure implementation milestones and dependencies are met.


• Maintain detailed project documentation, payroll requirements, testing results, issue logs, and implementation sign-offs.


• Support a controlled transition to the new global payroll provider while maintaining payroll accuracy, compliance, and business continuity throughout the migration.

What You'll Bring to the Table

• Knowledge of US payroll, payroll tax, and multi-state compliance requirements.


• Experience managing payroll projects, implementations, entity transitions, or similar initiatives.


• Strong project management and organizational skills, with the ability to independently manage timelines, deadlines, dependencies, and multiple stakeholders.


• Highly detail-oriented, accountable, and thorough, with a strong focus on accuracy and follow-through.


• Proven ability to take ownership of complex work from planning through execution, identify risks early, and proactively drive issues to resolution.


• Strong communication, collaboration and technical (Excel / Google worksheet) skills, with the ability to work effectively across Payroll, Finance, Tax, Legal, HR, vendors, and external stakeholders.

StackAdapter's Enjoy:

• Highly competitive salary


• Retirement/ 401K/ Pension Savings globally


• Competitive Paid time off packages including birthday's off!


• Access to a comprehensive mental health care program


• Health benefits from day one of employment


• Work from home reimbursements


• Optional global WeWork membership for those who want a change from their home office and hubs in London and Toronto


• Robust training and onboarding program


• Coverage and support of personal development initiatives (conferences, courses, books etc)


• Access to StackAdapt programmatic courses and certifications to support continuous learning


• An awesome parental leave program


• A friendly, welcoming, and supportive culture


• Our social and team events!

Please note: Benefits and perks may vary depending on your country of employment and the nature of your engagement. In locations where StackAdapt does not have a legal entity, employment and benefits are administered in accordance with local regulations and partner policies.