Diamond Peak

Assistant Project Manager – Mechanical Construction (St. Louis, Missouri)
Mechanical
Permanent May 8, 2026

Assistant Project Manager – Mechanical Construction

Location: St. Louis
Compensation: $95K – $130K Base + Full Benefits Package

About the Opportunity

We are seeking an Assistant Project Manager with Mechanical Construction experience to support large-scale Design-Build projects throughout the St. Louis market. This role will support Project Managers on complex HVAC, process piping, refrigeration, and controls projects across Data Centers, Food & Beverage, Government, and Industrial sectors.

Responsibilities

  • Assist with management of mechanical construction projects from preconstruction through closeout
  • Support scheduling, procurement, budgeting, and subcontractor coordination
  • Review project drawings, specifications, and submittals
  • Coordinate field operations and project documentation
  • Assist with cost tracking and forecasting
  • Participate in owner, architect, and contractor meetings
  • Support self-perform mechanical operations

Qualifications

  • 3+ years of Mechanical Construction experience
  • Experience supporting HVAC, piping, plumbing, or controls projects
  • Background with a Mechanical Contractor preferred
  • Familiarity with Design-Build project delivery
  • Experience using Procore, Bluebeam, Revit, or Navisworks
  • Strong communication and organizational skills

Benefits

  • Competitive base salary
  • Healthcare + HRA contribution
  • 401(k) with company match
  • Flexible PTO structure
  • Career advancement opportunities
  • Collaborative team environment

SEO Keywords

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