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Part-Time Administrative Assistant -- Construction & Service Office

Go-Staff, Inc. Skilled Trades
El Cajon, CA Part Time
POSTED ON 7/22/2026
AVAILABLE BEFORE 8/21/2026

Part-Time Administrative Assistant — Construction & Service Office

Pay: $22.00–$25.00 per hour
Location: El Cajon, CA
Schedule: Monday through Friday, approximately 25 hours per week
Hours: 11:00 a.m.–4:00 p.m. or 12:00 p.m.–5:00 p.m.


A well-established commercial construction and mechanical-service company in El Cajon is seeking a dependable Part-Time Administrative Assistant to support its customers, office staff, vendors, and field operations.

This position is ideal for someone who is organized, professional on the phone, comfortable working independently, and looking for a consistent weekday part-time schedule.

Responsibilities

  • Answer incoming phone calls and direct inquiries to the appropriate person
  • Respond to customer emails and provide professional customer support
  • Perform data entry and maintain accurate customer records
  • Organize electronic and physical files
  • Prepare, review, and organize paperwork
  • Assist with invoices and general billing-related administrative tasks
  • Communicate with customers, vendors, field employees, and internal staff
  • Maintain organized documents and follow up on incomplete information
  • Manage multiple assignments and shifting priorities
  • Provide general administrative support to the office

Qualifications

  • Previous administrative assistant, receptionist, office assistant, or customer-service experience
  • Strong phone and written communication skills
  • Comfortable communicating with customers by phone and email
  • Experience using Microsoft Outlook
  • General computer and data-entry proficiency
  • Strong organization and attention to detail
  • Ability to work independently and stay productive
  • Dependable attendance and reliable transportation
  • Availability Monday through Friday for the complete assigned schedule

Preferred Experience

Experience in any of the following environments is helpful but not required:

  • Construction
  • HVAC or mechanical services
  • Plumbing or electrical contracting
  • Property management
  • Facilities or building services
  • Dispatch or service coordination
  • Invoicing, billing, accounts receivable, or purchase orders
  • Vendor and customer record management

The Right Candidate

The strongest candidate will communicate clearly, follow through on responsibilities, catch small details, and remain professional when handling multiple calls, emails, and paperwork requests.

Because this is a permanent part-time schedule, we are especially interested in applicants who are specifically seeking consistent part-time employment and can commit to working all five weekdays.

Company Description
Go-Staff, Inc. is a family owned and operated full-service staffing company serving all of Southern California. We excel at placing job seekers in positions that are right for them, and we help employers in a wide variety of fields find talented employees that meet their needs.

We have a remarkably high success rate in placing the right person in the right job. What’s our secret? We go out of our way to make personal connections to find the right staff right now.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
Go-Staff, Inc. is an equal opportunity employer. All decisions regarding recruiting, screening, hiring, training, promotion, transfer, pay, training, benefits, and other conditions of employment will be made based on valid job qualifications and business reasons. All such decisions will be made without discrimination due to any characteristic or condition (including, but not limited to, criminal history) protected by federal, state, or local law. Arbitration is a condition of employment.
Arbitration is a condition of employment
Go-Staff, Inc. is an equal opportunity employer. All decisions regarding recruiting, screening, hiring, training, promotion, transfer, pay, training, benefits, and other conditions of employment will be made based on valid job qualifications and business reasons. All such decisions will be made without discrimination due to any characteristic or condition (including, but not limited to, criminal history) protected by federal, state, or local law. Arbitration is a condition of employment.

Salary : $22 - $25

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