Payroll & HR Admin: Grow into HR Leadership (AI-Driven)

The AI Advantage; Phoenix, Scottsdale (AZ, AZ); On-site; USD 65,000 - 70,000; Full time

Job summary

The AI Advantage, based in Scottsdale, AZ, is seeking an HR and Payroll Administrator who will own payroll first and evolve into the full HR function. You will learn directly from the Head of Human Resources and handle onboarding, offboarding, and HRIS maintenance with precision and AI-assisted tooling.

Bring about 2 years of payroll/HR experience, a detail-oriented mindset, and comfort using AI in daily tasks. This role is on-site and offers growth from payroll into broader HR responsibilities.

Qualifications

• About 2 years of hands-on experience processing payroll end to end (single-state or multi-state) in a payroll, HR administration, or combined role.
• Working knowledge of at least one HRIS or payroll platform (for example ADP, Paylocity, Gusto, Rippling, TriNet, or similar)
• Familiarity with onboarding and offboarding compliance (I-9s, tax forms, COBRA); we'll teach you the rest of the HR side
• Comfort with Excel or Google Sheets (lookups, pivot tables, basic formulas)
• Curiosity about AI: you use Claude, ChatGPT, or similar tools in your own work, and you can tell a shortcut from a mistake
• Strong attention to detail and a habit of double-checking numbers
• Sound judgment with confidential information
• Clear, friendly communication with employees at every level

Responsibilities

• Process payroll accurately and on schedule, including hours, PTO, bonuses, commissions, and deductions
• Review payroll registers, reconcile variances, and resolve issues before they reach employees
• Support payroll tax filings and year-end (W-2s, 941s), working with our payroll provider
• Answer employee questions about pay, deductions, and time off with clarity and care
• Coordinate the full new hire experience: offer paperwork, I-9 and E-Verify, tax forms, benefits enrollment, and system setup
• Manage offboarding steps, including final pay, benefits termination, COBRA notices, and access removal
• Maintain accurate employee records in our HRIS, including new hires, job changes, compensation updates, and terminations
• Put AI tools to work on reporting, documentation, and audits, with a human check on every number

Skills

Payroll processing

HRIS proficiency

Onboarding & offboarding

Excel / Google Sheets

AI tools familiarity

Data accuracy

Confidentiality

Clear communication

Tools

ADP

Paylocity

Gusto

Rippling

TriNet

Job description

The AI Advantage, based in Scottsdale, AZ, is seeking an HR and Payroll Administrator who will own payroll first and evolve into the full HR function. You will learn directly from the Head of Human Resources and handle onboarding, offboarding, and HRIS maintenance with precision and AI-assisted tooling.

Bring about 2 years of payroll/HR experience, a detail-oriented mindset, and comfort using AI in daily tasks. This role is on-site and offers growth from payroll into broader HR responsibilities.