Administrative Assistant / Bookkeeper

Administrative Assistant / Office Manager

Master Built Construction Corp.
Location: Casa Grande, Arizona (Corporate Headquarters)
Job Type: Full-Time (In-Office)

About Us

Master Built Construction Corp. is a growing licensed general contractor headquartered in Casa Grande, Arizona, specializing in residential and commercial construction throughout the state. We are committed to delivering quality workmanship, exceptional customer service, and professional project management.

We are seeking a dependable, organized, and detail-oriented Administrative Assistant / Office Manager to become an integral part of our team at our corporate headquarters. This position offers an excellent opportunity for someone who enjoys a fast-paced environment, takes pride in staying organized, and wants to grow with a company that values integrity, teamwork, and continuous improvement.

Position Summary

The Administrative Assistant / Office Manager is responsible for supporting the day-to-day administrative, bookkeeping, and office operations of the company. The ideal candidate is highly organized, self-motivated, customer-service oriented, and capable of managing multiple priorities while maintaining a high level of accuracy and professionalism.

Primary Responsibilities

• Answer and direct incoming phone calls professionally.
• Schedule appointments, meetings, and project-related activities.
• Maintain organized digital and physical filing systems.
• Perform accurate data entry and maintain company records.
• Process Accounts Payable (A/P) and Accounts Receivable (A/R).
• Prepare customer invoices and monitor collections.
• Process vendor invoices and maintain payment records.
• Perform monthly bank and credit card reconciliations.
• Investigate and resolve discrepancies in financial records.
• Enter and maintain financial information using QuickBooks Online or similar accounting software.
• Prepare spreadsheets, financial summaries, job cost reports, and management reports using Microsoft Excel.
• Assist with subcontractor onboarding, W-9s, Certificates of Insurance (COIs), and project documentation.
• Prepare proposals, change orders, contracts, and other administrative documents.
• Coordinate communications between management, field personnel, subcontractors, vendors, and clients.
• Maintain confidentiality of company and financial information.
• Support management with general office and administrative responsibilities.

Minimum Qualifications

• Bilingual (English & Spanish) – Required
• Minimum two (2) years of administrative and/or bookkeeping experience.
• Experience using QuickBooks Online or similar accounting software.
• Strong Microsoft Office skills, particularly Excel, Word, and Outlook.
• Experience with bank reconciliations, Accounts Payable, and Accounts Receivable.
• Excellent organizational and time management skills.
• Strong written and verbal communication skills.
• Ability to prioritize multiple tasks in a fast-paced environment.
• Professional phone etiquette and customer service skills.
• Reliable, punctual, dependable, and detail-oriented.
• Ability to work independently with minimal supervision.
• Willingness to learn new software and adapt to changing business processes.

Preferred Qualifications

• Previous experience working in the construction industry.
• Familiarity with construction terminology, purchase orders, change orders, project documentation, subcontractor coordination, and project schedules.
• Experience supporting project managers or company executives.

What We Offer

• Competitive compensation based on experience and qualifications.
• Stable, full-time employment with a growing Arizona contractor.
• Opportunity for professional growth and increased responsibility.
• Supportive, team-oriented work environment.
• The opportunity to make a meaningful contribution to the continued growth and success of Master Built Construction Corp.

Work Location

This position is based full-time at Master Built Construction Corp.'s Corporate Headquarters in Casa Grande, Arizona. This is an in-office position and is not remote or hybrid.

How to Apply

Interested candidates should submit their resume along with a brief summary of their administrative, bookkeeping, and office management experience. Qualified applicants will be contacted to schedule an interview.

Master Built Construction Corp. is an Equal Opportunity Employer. We value professionalism, integrity, accountability, teamwork, and exceptional customer service.

Pay: $20.00 - $27.50 per hour

Work Location: In person

Salary : $20 - $28