Assistant Project Manager

As an Assistant Project Manager, you will be an essential member of our project management team, supporting the successful execution of mechanical design-build projects for commercial tenant improvements in the San Francisco Bay Area. You will work at the heart of our operations, fostering collaboration between our Project Managers, engineering teams, and field crews to ensure our projects are delivered with the highest level of quality.

This role is a critical launching point for a career in mechanical construction management, offering direct mentorship and hands‑on experience in a dynamic and innovative environment.

• Assist in developing and managing project budgets by reviewing initial estimates and creating comprehensive financial plans.
• Support project scheduling by tracking key dates for startup, testing, and subcontractor mobilization.
• Manage the procurement process by creating and maintaining a detailed log for all project materials and equipment.
• Draft and manage key project documentation, including subcontracts, purchase orders, Requests for Information (RFIs), and Change Order Requests (CORs).
• Facilitate seamless communication between office and field teams, including Project Managers, Superintendents, and Foremen.
• Process and manage project submittals, understanding reviewer comments and facilitating necessary revisions.
• Review and interpret project documents such as daily field reports, construction plans, and Test & Balance reports.

• 1-3 years in a construction-related role
• A foundational understanding of mechanical systems, including HVAC, plumbing, and sprinkler systems.
• Demonstrated ability to read and interpret construction plans and project schedules.
• Excellent written, verbal, and interpersonal communication skills, with the ability to build strong relationships internally and externally.
• A proactive and self‑motivated approach to daily tasks, with the ability to take responsibility and work independently.
• Strong organizational skills, with the resilience to prioritize duties and manage conflicting demands in a pressure‑filled environment.
• Experience with construction software such as Foundation, Procore, Bluebeam, Plan Grid, MS Excel, and MS Word.
• Bachelor’s degree in construction management or mechanical engineering is desirable.

This is an opportunity to build a long‑term career in mechanical construction project management while working alongside experienced professionals on complex projects throughout the San Francisco Bay Area. At AR&B, Assistant Project Managers are given meaningful responsibility, hands‑on experience, and the opportunity to develop the technical, financial, and leadership skills required to advance into a Project Manager role.

Family‑owned since 1921, AR&B has built a culture around loyalty, accountability, craftsmanship, and long‑term investment in our people. We support employees as they grow, take on greater responsibility, and build lasting careers with the company.

$80,000-$120,000 annually

AR&B Mechanical Contractor is an equal opportunity employer. We consider qualified applicants without regard to any characteristic protected by applicable law.

Reasonable accommodations are available to applicants with disabilities and for sincerely held religious beliefs or practices. To request an accommodation during the application or hiring process, email  or call the main office at .