Construction Assistant Project Manager in San Antonio, Texas at INVICTUS PEO

The Construction Assistant Project Manager (APM) provides comprehensive support to the Project Manager throughout all phases of construction projects, from preconstruction planning through project completion and closeout. Working closely with the Project Manager, field personnel, subcontractors, vendors, clients, and internal teams, the APM helps ensure projects are executed safely, efficiently, on schedule, within budget, and in accordance with contract requirements.

This position requires a proactive, detail-oriented professional with strong organizational, communication, and problem-solving skills. The Assistant Project Manager is responsible for coordinating project documentation, procurement activities, scheduling, subcontractor communications, contract administration, and project reporting while maintaining compliance with company policies and federal contract requirements.

Reliance specializes in electrical and mechanical construction for both military and civilian federal facilities throughout the United States and internationally. In addition, the company performs work in a variety of other construction disciplines supporting federal government agencies.

Essential Duties and Responsibilities

• Assist the Project Manager with the planning, coordination, execution, and closeout of multiple construction projects.
• Support all phases of project management by performing administrative and project coordination duties to help ensure projects are completed safely, on time, and within budget.
• Coordinate daily communication between project team members, subcontractors, vendors, clients, architects, engineers, and government representatives.
• Develop, maintain, and update a comprehensive subcontractor and vendor contact database.
• Prepare and process purchase orders and assist with procurement activities.
• Maintain project document control by processing revisions to drawings, specifications, and contract documents, ensuring current versions are distributed to authorized personnel.
• Assist field teams by maintaining hard copy drawing sets and replacing drawings as revisions are issued.
• Assist with preparation, tracking, and management of project submittals, Requests for Information (RFIs), change documentation, and closeout packages.
• Coordinate monthly subcontractor and owner billing with the Project Manager and assist in monitoring invoice processing and payment status.
• Support project-specific administrative requirements, including certified payroll, Owner Project Manager (OPM) documentation, certified payroll reporting, and other federal contract compliance documentation.
• Develop and maintain detailed project schedules, milestone tracking, and administrative task lists.
• Participate in project planning meetings and internal departmental meetings.
• Perform additional duties and responsibilities as assigned to support successful project execution.

• Bachelor's degree in Construction Management, Engineering, Business, or a related field preferred.
• Minimum of two (2) years of experience supporting construction projects as an Assistant Project Manager, Project Engineer, Project Coordinator, or similar role.
• Experience supporting federal, commercial, or industrial construction projects is preferred.
• Working knowledge of construction project management principles, scheduling, procurement, subcontract administration, and document control.
• Proficiency with Microsoft Office Suite, including Outlook, Word, Excel, PowerPoint, and Teams.
• Experience with construction management software such as Procore, Primavera P6, Microsoft Project, Viewpoint, or similar platforms is a plus.

Knowledge, Skills, and Abilities

• Excellent verbal and written communication skills.
• Strong organizational and time management abilities with exceptional attention to detail.
• Ability to prioritize multiple assignments and meet deadlines in a fast-paced environment.
• Demonstrated ability to work independently while supporting multiple project teams.
• Professional interpersonal skills with the ability to build productive relationships with clients, subcontractors, vendors, and coworkers.
• Ability to maintain confidentiality when handling proprietary, contractual, and sensitive company information.
• Strong analytical and problem-solving skills.
• Ability to read and interpret construction drawings, specifications, and contract documents is preferred.
• Willingness to travel to project sites as required.

Security Requirements

• Must be able to successfully obtain and maintain a Secret Security Clearance.
• Must be legally authorized to work in the United States.

Why Reliance Construction?

Reliance Construction is a growing federal and infrastructure-focused contractor supporting mission-critical projects across defense, energy, and government markets. Our work includes federal construction, energy infrastructure, design-build delivery, and specialized construction programs supporting long-term global infrastructure initiatives.

We are building a team of professionals who thrive in fast-moving environments, take ownership of their work, and want to help shape the future growth of the company.

Benefits:

• 401(k)
• Cell phone reimbursement
• Dental insurance
• Health insurance
• Life insurance
• Paid time off
• Vision insurance