Senior Project Manager, Mechanical Systems [Remote]

About Mantis

We help organizations improve how their buildings perform by bringing together energy, facility operations, and sustainability into one connected approach. At Mantis, our teams work across the full lifecycle of a facility—from planning and design to field execution and long-term asset management—across commercial and industrial portfolios, data centers, and complex mechanical systems.

Our work spans four core areas: Building Controls, Energy Efficiency, Energy Advisory, and Facility Management—covering HVAC/mechanical optimization, BMS/BAS and EPMS controls, lighting system upgrades, energy brokerage, roofing and building envelope assessments, construction management, and more.

Whether you’re in sales, engineering, construction/project management, field operations, corporate, or technology, you’ll play a role in delivering these solutions and helping clients improve facility performance.

The Senior Project Manager, Mechanical Systems, owns the delivery of mechanical, utility, and energy infrastructure projects from first site visit through closeout. The role turns complex facility needs into well-scoped, financially sound projects, then leads the engineering, contractors, and field execution needed to deliver them safely, on schedule, and within budget.

This is a senior, client-facing role. The Senior Project Manager serves as the primary point of accountability for a portfolio of commercial, industrial, and public-sector projects, guides clients through investment decisions, manages project financials and risk, and mentors project engineers and coordinators. Success in this role directly drives client outcomes, project margin, and repeat business.