Payroll Administrator/ HR Assistant

Job ID : 061724
Working type : Onsite
Education level : Bachelors Degree
Salary range : $55000 – $61000
Employment type : Full time
Experience level : Mid Level
Currency :
Job type : Permanent
Job location : Irvine, CA, USA
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City : Irvine
State : CA
Country : USA
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Job Title: Payroll Administrator & Human Resources Assistant

Location: Office-based（No Remote / No Hybrid）

Work Hours: Monday–Friday 8:30am–5:00pm (37.5 hours/week)

Pay Range: $28–31/hour

Employment Type: Full-Time / Non-Exempt

Position Summary

Our client company is seeking an experienced Payroll Administrator & HR Assistant to join their team.

This role is primarily responsible for processing bi-weekly payroll using ADP TotalSource and supporting daily HR operations. The ideal candidate must have strong payroll experience and be comfortable managing payroll audits, reporting, benefits administration, and compliance-related tasks.

This is a fully on-site position and requires hands-on payroll expertise.

Key Responsibilities

Payroll Administration (Primary Responsibility)

• Process bi-weekly payroll using ADP TotalSource

• Manage employee contribution changes and payroll updates

• Maintain PTO accrual records and internal leave tracking system

• Perform quarterly payroll audits

• Prepare payroll journals and required payroll, tax, disability, and leave reports

• Provide payroll data to Accounting as requested

HR & Administrative Support

• Assist with onboarding and new hire orientation

• Support benefits and 401(k) administration

• Compile and prepare data for annual 401(k) audits

• Reconcile benefit invoices for Accounting

• Assist in implementing and maintaining HR policies

• Support performance appraisal and sales incentive processes

• Assist with HR programs, conferences, and special events

Qualifications

Required

• 3–5 years of payroll experience (REQUIRED)

• Hands-on experience with ADP TotalSource (REQUIRED)

• Strong understanding of payroll fundamentals

• Knowledge of employee benefits administration

• Understanding of federal and state employment regulations

• Proficiency in Microsoft Excel and Microsoft Office

• Strong organizational and multitasking skills

• Excellent communication skills

Preferred

• Recruiting experience

• BA degree, HR certification, or equivalent experience