Persons in these roles are expected to work from our offices in Seattle. On-site requirements vary based on position and team. If you have questions about on-site work arrangements for this role, please ask your recruiter.
Our base salary range is $89,500 - $134,000 and in addition we have generous bonus plans to provide a competitive compensation package.

Who You Are:

You are a meticulous, solution-oriented payroll professional who takes genuine pride in work that's invisible when it's done right. You know that payroll is a trust function at its core - every person at the organization is counting on you to be accurate, on time, every cycle - and you treat that responsibility with the seriousness it deserves.

You're a process builder, not just a process runner. You get a little thrill out of replacing a manual step with a well-configured integration, and you're curious about how AI tools can take even more repetitive work off your plate.

You're comfortable operating with a high degree of autonomy across a complex footprint - multiple states, multiple countries, multiple systems - without losing the details that matter. You communicate proactively, ask clarifying questions early, and follow through without needing to be reminded. When plans change at the last minute - because they will - you stay calm, set realistic expectations, and find the workable path forward.

Most importantly, you understand that this role is part of something larger. Ai2's researchers are building breakthrough AI to solve the world's biggest problems - and none of that happens without a team that's paid accurately, on time, and without ever having to think about it. That's the quiet foundation you provide.

Your Next Challenge:

The Payroll Lead owns end-to-end payroll for our distributed workforce: multi-state US payroll spanning up to 20 states, plus a small group of international and US employees paid through our Employer of Record (EOR) partners in 5-10 countries. You'll work closely with the Sr Manager of Payroll & Benefits and partners in People Operations and Finance, with broad day-to-day autonomy over payroll execution, systems, and process improvement.

This role has been deliberately scoped with room to grow. There is a path toward increased responsibility for someone who demonstrates ownership of the function and drives it forward. There are also greenfield projects waiting for you, like AI-assisted payroll dashboards and data analysis work that we've never had the bandwidth to build. If you want to build broad, modern payroll expertise (multi-state, global EOR, systems integration, automation) at a mission-driven organization, this is that role.

Payroll Execution

• Own end-to-end processing of biweekly multi-state US payroll (up to 20 states), including tax withholding, SUTA rates, and local jurisdiction compliance.
• Manage international payroll for employees in 5-10 countries via EOR partners, including onboarding coordination, invoice reconciliation, and serving as the primary point of contact for EOR relationships.
• Coordinate time-sensitive international employment changes - urgent new-hire requests, last-minute contract extensions, and offboarding reversals - partnering with hiring managers and People Operations to set realistic timelines and navigate what EOR providers can (and cannot) accommodate.
• Partner with People Operations on new hires, internal transfers, terminations, benefit deductions, leaves of absence, and compensation changes.
• Respond to employee payroll questions with clarity, empathy, and urgency.

Systems, Integrations & Automation

• Own and optimize integrations between our HRIS and adjacent systems (ATS, 401(k), and expense platforms) to reduce manual entry and improve accuracy.
• Work with your supervisor to identify integration and automation opportunities - including AI-augmented workflows - to further streamline payroll and adjacent processes.
• Build AI-assisted payroll dashboards and lead payroll data analysis projects, surfacing cost trends, anomalies, and headcount insights for Finance and leadership - a greenfield project this role gets to own and shape.
• Maintain audit-ready documentation, internal controls, and payroll SOPs.

Compliance, Reconciliation & Reporting

• Perform quarterly and annual SALT payroll reconciliations and support quarter-end and year-end close, including W-2s and related reporting.
• Own monthly benefits reconciliations, ensuring carrier invoices align with payroll deductions and resolving discrepancies with People Operations and providers.
• Administer the 401(k) plan, including contribution funding, deferral change processing, and assisting with the annual 401(k) audit process.
• Prepare and remit workers' compensation filings, payments and payroll true-ups for OH, WA and WY.
• Prepare and remit Seattle payroll expense tax and Seattle Social Housing tax filings and payments.
• Work with your supervisor to coordinate prior quarter and year adjustments as needed, including W-2C creation and distribution to employees.
• Monitor changing federal, state, and local payroll regulations and proactively adjust processes to stay compliant.
• Identify and drive process improvements across the payroll function.

What You'll Need:

Minimum Qualifications

• 4+ years of progressive payroll experience, including multi-state payroll ownership (10+ states and experience managing local tax registrations preferred).
• Hands-on experience with modern payroll/HRIS platforms and monitoring system integrations.
• Advanced Excel skills, including pivot tables, XLOOKUP/VLOOKUP, and comfort manipulating large data sets for reconciliation and reporting.
• Knowledge of federal, state, and local payroll tax regulations, wage and hour rules, and payroll compliance requirements.
• A solution-oriented mindset - you don't just flag problems, you offer a fix.
• Excellent collaboration and communication skills, with experience working effectively in a virtual or hybrid environment across multiple teams.
• High attention to detail, discretion with confidential information, and a strong sense of ownership over deadlines.

Preferred Qualifications

• Experience managing complex logistics for onboarding, extending and offboarding international employees or similar work.
• Experience supporting international payroll, ideally through EOR providers such as Remote, Deel, or similar platforms.
• Experience with payroll GL accounting and cost allocation, ideally in a grant-funded or nonprofit environment.
• CPP or FPC certification - professional development support is available.
• Experience documenting SOPs or building process docs from scratch.

Physical Demands and Work Environment:

The physical demands described here are representative of those that must be met by a team member to successfully perform the essential functions of this position. Reasonable accommodations may be made to enable individuals with disabilities to perform the functions.

• Must be able to remain in a stationary position for long periods of time.
• The ability to communicate information and ideas so others will understand. Must be able to exchange accurate information in these situations.
• The ability to observe details at close range.
• Can work under deadlines.

Benefits:

• Team members and their families are covered by medical, dental, vision, and an employee assistance program.
• Team members are able to enroll in our health savings account plan, our healthcare reimbursement arrangement plan, and our health care and dependent care flexible spending account plans.
• Team members are able to enroll in our company's 401k plan.
• Team members will receive $125 per month to assist with commuting or internet expenses and will also receive $200 per month for fitness and wellbeing expenses.
• Team members will also receive up to ten sick days per year, up to seven personal days per year, up to 20 vacation days per year and twelve paid holidays throughout the calendar year.
• Team members will be able to receive annual bonuses and can participate in the long-term incentive plan.

Note: This job description in no way states or implies that these are the only duties to be performed by the team members(s) of this position. Team members will be required to follow any other job-related instructions and to perform any other job-related duties requested by any person authorized to give instructions or assignments. All duties and responsibilities are essential functions and requirements and are subject to possible modification to reasonably accommodate individuals with disabilities. To perform this job successfully, the team member(s) will possess the skills, aptitudes, and abilities to perform each duty proficiently. Some requirements may exclude individuals who pose a direct threat or significant risk to the health or safety of themselves or others. The requirements listed in this document are the minimum levels of knowledge, skills, or abilities. This document does not create an employment contract, implied or otherwise, other than an at will relationship.