Part-Time Payroll & Office Admin — On-Site 1 Day/Week

Polymer; San Leandro (CA); On-site; USD 34,000 - 48,000; Part time

Job summary

PHNX Materials is seeking a part-time Payroll & Office Administrator to handle payroll processing and office operations on-site in California. The role requires meticulous attention to detail, strong organization, and the ability to coordinate payments, invoices, and vendor services.

You will maintain payroll records in QuickBooks, route documents correctly, and ensure deadlines are met while keeping sensitive information confidential.

Qualifications

• Experience with payroll and payroll processing
• Ability to review payroll reports for discrepancies
• Strong attention to detail and accuracy
• Ability to work independently with part‑time schedule

Responsibilities

• Process payroll accurately and on time, verify time records and changes
• Review payroll reports and obtain required approvals
• Maintain QuickBooks entries and confidential records
• Process and pay vendor invoices with approvals
• Manage internal Payroll and Benefits system
• Prepare and submit invoices to third parties for payment
• Receive, log, and route incoming checks, bills, and mail
• Coordinate janitorial services and office supplies
• Route questions to appropriate person and ensure resolution
• Escalate missing information and deadlines to prevent issues
• Maintain checklists so recurring tasks are reliable

Skills

Payroll processing

Vendor payments

Invoicing accuracy

Office administration

Attention to detail

Tools

QuickBooks

Job description

PHNX Materials is seeking a part-time Payroll & Office Administrator to handle payroll processing and office operations on-site in California. The role requires meticulous attention to detail, strong organization, and the ability to coordinate payments, invoices, and vendor services.

You will maintain payroll records in QuickBooks, route documents correctly, and ensure deadlines are met while keeping sensitive information confidential.