Senior Design Engineer - HVAC

Mantis Innovation provides managed facility services and turnkey program management with technology-enabled solutions that target the entire building footprint. We look at the entire facility—inside and out—and can impact 70% of what a building operator allocates critical budget dollars toward, including: Strategic electricity and natural gas procurement, renewable energy, and demand response; climate impact reduction and reporting, net zero strategies, and sustainability planning; roofing, solar, HVAC assessment management, pavement, building envelope, data center optimization, and EV charging; lighting/LED retrofits, HVAC/mechanical systems, and BMS/BAS improvements and implementation.

The Senior Design Engineer (Mechanical) helps clients identify, design, and implement utility and infrastructure improvements. This role solves the challenge of turning complex facility needs into practical projects that improve performance, reliability, and cost efficiency. The position leads technical assessments, feasibility analysis, project scoping, and engineering design to support informed investment decisions. This role is critical to delivering accurate project recommendations, strong technical solutions, and well-executed engineering support from concept through implementation.

OUTCOMES & SCORECARD FOR SUCCESS

• Complete 95% of assigned site surveys, feasibility studies, and investment-grade cost estimates by the committed deadline, with less than 5% requiring material rework due to engineering errors or omissions.

• Develop and deliver technical scopes, project economics, and engineering recommendations that contribute to at least $5M annually in qualified project opportunities approved for proposal or implementation.

• Demonstrate a consistently positive attitude, strong collaboration, and reliable responsiveness with clients, internal teams, and project partners, as evidenced by constructive stakeholder feedback and dependable follow-through on commitments.

RESPONSIBILITIES

• Conduct site surveys and collect technical, operational, utility, and cost data to establish project baselines and identify client needs.

• Analyze facility infrastructure, utility systems, and operating conditions to identify energy, water, and operational improvement opportunities.

• Perform feasibility studies and technical evaluations for utility modernization and energy efficiency solutions.

• Develop project scopes, engineering assumptions, savings calculations, and investment-grade cost estimates.

• Prepare technical recommendations, project economics, and supporting documentation for client proposals and decision-making.

• Lead design engineering activities for approved projects, ensuring technical quality and alignment with project objectives.