Assistant Project Manager

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

Location: Austin, Texas

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.

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.

• 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

• 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

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

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.