Assistant Project Manager

Sirius Building Company; Austin (TX); On-site; USD 60,000 - 80,000; Full time

Job summary

A growing commercial general contractor in Austin, Texas is seeking an Assistant Project Manager to support Project Managers in executing commercial construction projects. The ideal candidate will have over 2 years of experience in the commercial construction sector and proven skills in managing documentation, schedules, and communication with stakeholders. This role offers a chance to work within a collaborative team focused on delivering projects with precision and timeliness.

Qualifications

• 2+ years of experience in commercial construction with a general contractor.
• Proven experience as an Assistant Project Manager or Project Engineer on commercial projects.
• Strong knowledge of construction processes, scheduling, and project documentation.

Responsibilities

• Support Project Managers in commercial construction projects.
• Coordinate and manage subcontractors and suppliers.
• Prepare and manage RFIs and change orders.

Skills

Project management experience

Communication skills

Organizational skills

Time management

Tools

Construction management software

Job description

Job Title: Assistant Project Manager (Commercial Construction – General Contractor)

Location: Austin, Texas

About Sirius Building Company

Sirius Building Company is a growing commercial general contractor delivering high-quality construction projects throughout Central Texas. We specialize in ground-up and interior commercial projects and are known for our commitment to precision, strong partnerships, and on-time delivery. Our team thrives on accountability, collaboration, and building lasting client relationships.

Position Summary

Sirius Building Company is seeking an experienced Assistant Project Manager (APM) with a strong background working for a commercial general contractor. This role is critical to supporting Project Managers in the execution of commercial construction projects from pre-construction through closeout. The ideal candidate is highly organized, detail-oriented, and experienced in managing the administrative and technical aspects of commercial builds.

Key Responsibilities

• Support Project Managers in all phases of commercial construction projects (ground-up and tenant improvement)
• Coordinate and manage subcontractors, vendors, and suppliers to ensure timely execution
• Prepare, track, and manage RFIs, submittals, change orders, and purchase orders
• Assist in developing and maintaining project schedules and budgets
• Review construction drawings, specifications, and contracts for accuracy and completeness
• Conduct job site visits to monitor progress, quality, and safety compliance
• Maintain detailed and organized project documentation and reporting
• Assist with project cost tracking, forecasting, and financial reporting
• Communicate effectively with clients, architects, engineers, and internal teams
• Support project closeout processes including punch lists, as-builts, and final documentation

Required Qualifications

• 2+ years of experience in commercial construction with a general contractor required
• Proven experience as an Assistant Project Manager or Project Engineer on commercial projects
• Strong knowledge of construction processes, scheduling, and project documentation
• Experience managing RFIs, submittals, and change orders in a commercial GC environment
• Proficiency with construction management software
• Strong organizational, time management, and communication skills
• Ability to manage multiple projects and deadlines in a fast-paced environment

Preferred Qualifications

• Experience with ground-up commercial construction projects
• OSHA 10 or OSHA 30 certification

How to Apply

Submit your resume and a brief cover letter highlighting your commercial general contractor experience and relevant project background.

Sirius Building Company is an equal opportunity employer and values a diverse and inclusive workplace.