Part Time Office Assistant

Part-Time Office Assistant (Accounting & Shipping)

Shop Floor Automations (SFA)
La Mesa, CA
$19–$21 per hour (DOE)
Part-Time | Approximately 15–20 hours per week

Job Summary

Shop Floor Automations is seeking a detail-oriented Office Assistant to support daily administrative operations including billing, order processing, shipping, and office coordination.

This role helps ensure customers receive accurate invoices, timely shipments, and responsive support. The position combines light accounting tasks with shipping and inventory support, making it ideal for someone who enjoys both administrative work and hands-on tasks in a small team environment.

Responsibilities

• Prepare and send customer invoices, credit memos, and statements
• Process customer payments (credit card and ACH) and assist with accounts receivable follow-up
• Document customer interactions and maintain organized customer files
• Assist sales representatives with quotes, sales orders, and purchase orders
• Review technician expenses and prepare billable items for customers
• Package and ship hardware orders using UPS shipping software
• Receive and inspect incoming shipments and maintain hardware inventory
• Assemble and test cables or adapters for customer orders when needed
• Monitor and restock office and shipping supplies
• Perform general office support tasks to keep operations running smoothly

Skills We’re Looking For

• Strong attention to detail
• Basic math and computer skills
• Proficiency with Microsoft Office / Office 365
• Organization and multitasking ability
• Clear written and verbal communication
• Customer service mindset
• Ability to work independently and follow procedures

Minimum Qualifications

• High school diploma or equivalent
• General office or administrative experience
• Ability to lift up to 40 lbs
• Reliable attendance and consistent schedule
• Authorization to work in the United States
• Ability to pass background check and drug test

Preferred Experience

• QuickBooks (invoicing and payments)
• CRM systems such as Zoho
• Sales order software such as QuoteWerks
• UPS or other shipping software
• Basic accounting or accounts receivable experience
• Basic soldering or electronics assembly experience (helpful but not required)

Who This Job Is Great For

This position tends to be a great fit for someone who:

• Enjoys organized, detail-oriented work
• Likes checking tasks off a list and getting things done correctly
• Is comfortable working independently in a small office
• Enjoys a mix of computer work and hands-on tasks
• Wants a consistent part-time schedule

This Role May Not Be Ideal If You

• Prefer constantly changing tasks rather than structured procedures
• Prefer a large corporate office environment
• Are looking for a fully remote position
• Prefer a role focused only on customer service or only on accounting

About Shop Floor Automations

Shop Floor Automations (SFA) is a national service provider to the manufacturing industry specializing in software and hardware solutions that improve the performance and longevity of CNC machines and other industrial equipment.

Founded in 1998, our La Mesa office has a small, collaborative environment with long-term employees, many of whom have been with the company for over a decade.

Schedule

• Approximately 15–20 hours per week
• Typical schedule around 10:00 AM – 2:00 PM
• Monday–Friday business hours: 7:00 AM – 4:00 PM
• Some scheduling flexibility may be available

Apply

Submit your resume for consideration.

Shop Floor Automations is an Equal Opportunity Employer.
All positions are subject to background checks and drug testing.

Pay: $19.00 - $21.00 per hour

Benefits:

• Flexible schedule

Work Location: In person