Assistant Project Manager

Company Description

Mainelli Mechanical Contractors, Inc. has been a leading provider of mechanical and plumbing contracting services in Nebraska and Iowa since 1969. Guided by the McNeil family, the company operates on the philosophy that optimal buildings are fully integrated with mechanical systems that enhance functionality for people and businesses. Mainelli specializes in services such as design, construction, fabrication, process piping, plumbing, and medical gas piping.

The organization serves diverse industries including healthcare, government, education, commercial, and telecommunications from its base in the Omaha metropolitan area.

The Assistant Mechanical Project Manager supports the planning, coordination, and execution of mission-critical data center mechanical projects, including chilled water systems, hydronic piping, plumbing, process piping, and associated structural supports. This role works closely with Project Managers, field leadership, vendors, and owners to help deliver projects that meet stringent schedule, quality, and safety requirements typical of hyperscale and enterprise data center environments.

This position is intended for candidates seeking a long-term career path toward Mechanical Project Manager / Senior Project Manager roles in data center construction.

• Assist with day-to-day management of data center mechanical construction projects
• Support fast-track schedules and phased turnovers common to mission-critical facilities
• Coordinate closely with field supervision to align manpower, materials, equipment, and prefabrication activities
• Participate in project kickoff, coordination, owner, and subcontractor meetings

• Assist with material and equipment buyouts, including long-lead items critical to data center schedules
• Track procurement status, deliveries, and vendor commitments
• Help maintain:
  • Project budgets and cost tracking
  • Labor hour tracking and productivity reports
  • Change order and potential change order (PCO) logs
• Assist with monthly job cost reviews and forecasting

• Assist with preparation, review, and tracking of:
  • RFIs
  • Submittals
  • Change orders
  • Field change documentation
• Maintain accurate and organized project records consistent with data center owner standards
• Support QA/QC processes, including pressure testing documentation, inspections, and turnover packages
• Assist with project closeout documentation such as O&M manuals, as-builts, and commissioning support

• Support coordination between office, field, and prefabrication teams
• Conduct jobsite walks to verify installation progress and scope compliance
• Help enforce company safety policies and data center–specific site requirements
• Coordinate with owner representatives and other trades in highly controlled operating environments

• Assist with quantity take-offs and scope reviews for data center mechanical systems
• Help review vendor, supplier, and subcontractor proposals
• Participate in estimate handoffs and detailed project turnover meetings
• Support constructability reviews and prefabrication planning

• Bachelor’s degree in Construction Management, Mechanical Engineering, or related field OR equivalent industry experience
• 1–3 years of experience in mechanical construction (internships and field experience acceptable)
• Basic understanding of mechanical systems including:
• Chilled water (CWS/CWR)
• Hydronic piping
• Plumbing systems
• Mechanical equipment supports
• Ability to read and interpret construction drawings, specifications, and coordination models
• Strong organizational, communication, and time-management skills
• Proficiency in Microsoft Office (Excel, Word, Outlook)

• Experience working on data center, mission-critical, industrial, or healthcare projects.
• Familiarity with project management and construction software (Procore, Bluebeam, Auto Desk, etc.)
• Experience with Trimble products (Trimble Connect, Auto Bid, Project Site, Autobid, point to point)
• Exposure to prefabrication, modular construction, or advanced coordination workflows

• Competitive Pay
• 5% 401k Match
• Fully-paid healthcare
• Paid Vacation & Sick Time