Mission Critical Senior Project Manager - Mechanical Construction

At Horwitz, we don’t just offer jobs- we build careers. For over 100 years, we’ve been a leader in HVAC, plumbing, electrical services, delivering exceptional service while fostering a supportive and innovative workplace. Joining our team means working with passionate professionals in a culture built on safety, accountability, professionalism, motivation, curiosity, and a can-do attitude.

We’re committed to your growth with training, mentorship, and advancement opportunities. Along with competitive benefits- you’ll be part of a company that values its employees and makes a positive impact in the community. Join Horwitz and become part of a legacy of excellence and opportunity. The Mission Critical Senior Project Manager – Mechanical is responsible for leading large-scale, complex mechanical construction projects in mission-critical environments, including data centers, semiconductor facilities, and other high-tech facilities.

This role oversees project execution from preconstruction through commissioning and closeout, ensuring financial performance, schedule adherence, and successful coordination of complex mechanical systems. As a leader, this position drives collaboration across project teams, builds strong customer relationships, and upholds Horwitz’s core values: Safe, Accountable, Professional, Motivated, Can Do, and Curious.

What You’ll Do: Lead the planning, management, and execution of large-scale mission-critical mechanical construction projects from preconstruction through closeout. Develop and maintain project schedules, staffing plans, labor forecasts, and execution strategies to ensure successful project delivery. Collaborate with field leadership on weekly work plans, look-ahead schedules, pull planning, and project coordination.

Oversee mechanical systems, equipment procurement, subcontractors, vendors, and project stakeholders. Drive design, BIM coordination, and prefabrication processes to improve productivity and project efficiency. Manage project budgets, cost forecasting, billing, cash flow, and profitability while identifying financial risks and opportunities.

Lead monthly forecasting and work-in-progress (WIP) reviews, monitoring labor productivity, project costs, and subcontractor performance. Review and negotiate contracts, manage change orders, and proactively address financial, operational, and scheduling risks. Partner with Preconstruction on estimating, pricing strategies, value engineering, and project alternatives.

Lead and mentor Project Managers, Project Engineers, and project teams through coaching, collaboration, and accountability. Coordinate mechanical startup, testing, commissioning, and project closeout to meet project requirements and customer expectations. Build and maintain strong relationships with owners, general contractors, and industry partners while identifying opportunities for future business.

Uphold Horwitz’s professional standards, safety expectations, and commitment to continuous improvement. Perform other duties as assigned. Conduct yourself in accordance with Horwitz core values: Safe, Accountable, Professional, Motivated, Can Do, and Curious. Get better every day. Skills and Abilities: Strong technical knowledge of HVAC, process piping, plumbing, hydronic systems, and complex mechanical infrastructure.

Proven ability to manage large-scale mechanical construction projects with accountability for budgets, schedules, and profitability. Strong understanding of construction contracts, procurement, scheduling, cost forecasting, and risk management. Experience managing labor productivity, change orders, subcontractor performance, and project financials.

Ability to lead and mentor project teams while collaborating effectively with field leadership, engineering, and trade partners. Excellent communication, negotiation, leadership, and problem-solving skills. Ability to anticipate project challenges, develop solutions, and maintain strong customer relationships.

Education and Experience

2-year technical associate degree or higher required. Significant project management experience in commercial or industrial mechanical construction. Direct experience managing mission-critical construction projects, including hyperscale data centers, semiconductor facilities, or other high-tech environments. Experience with chilled water systems, cooling systems, equipment plants, and process piping.

Experience managing accelerated project schedules, phased turnover, and complex commissioning processes. Familiarity with mechanical prefabrication, BIM coordination, and design-assist or design-build construction. Experience managing large mechanical construction budgets and complex subcontractor scopes. Proficiency with Procore, Microsoft Project, COINS, Rivet, or similar project management platforms.

Experience mentoring Project Managers and Project Engineers. Valid driver’s license and reliable transportation for jobsite travel