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Preconstruction Project Manager; Mechanical Construction

Job in St. Louis, Saint Louis, St. Louis city, Missouri, 63105, USA
Listing for: GPAC
Full Time position
Listed on 2026-01-02
Job specializations:
  • Engineering
    Mechanical Engineer
  • Construction
Job Description & How to Apply Below
Position: Preconstruction Project Manager (Mechanical Construction)
Location: St. Louis

An established employee-owned mechanical contractor is seeking a Preconstruction Project Manager to lead front-end planning for large-scale commercial, industrial, and mission-critical projects. This role focuses on conceptual estimating, cost strategy, and early-stage collaboration with design, engineering, and construction partners.

Responsibilities
  • Develop and manage budgets, conceptual estimates, and schedules during preconstruction
  • Lead scope definition, bid packaging, and value engineering analysis
  • Collaborate closely with internal engineering, BIM, and fabrication teams
  • Interface with owners, architects, and GCs to provide clear project direction
  • Ensure proposals and preconstruction deliverables are accurate and completed on time
Qualifications
  • 5+ years in mechanical preconstruction, estimating, or project planning
  • Strong knowledge of HVAC and piping systems
  • Proven experience preparing conceptual budgets and supporting design-assist efforts
  • Excellent communication, client-facing, and organizational skills
Benefits
  • Employee Stock Ownership Program (ESOP)
  • Paid Parental Leave
  • Tuition Reimbursement
  • Gym Reimbursements
  • PTO (Vacation + Sick)
  • Full health, vision, and dental coverage
How to Apply

Submit your resume to  or apply directly to this posting. Relevant titles:
Preconstruction Manager, Estimating Manager, Mechanical Preconstruction PM, Mechanical Project Manager, Estimator, Mechanical Engineer.

All qualified applicants will receive consideration without regard to race, age, color, sex (including pregnancy), religion, national origin, disability, sexual orientation, gender identity, marital status, military status, genetic information, or any other status protected by applicable laws or regulations.

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