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Senior Mechanical Engineer
Boston, MA (Hybrid – Boston, Portland ME, or Hartford CT)

Must-Haves

• 10+ years of experience designing and leading HVAC systems for complex buildings
• Strong expertise in HVAC and thermal energy system design
• Proficiency with IESVE or comparable load calculation software
• Proven ability to lead design teams and mentor engineers
• Comfortable in client-facing roles with direct project responsibility

Preferred:

• PE license

About the Role

Join a nationally recognized, employee-owned MEP firm known for innovation across data centers, healthcare, science & technology, and clean energy sectors. This is an opportunity to take on a leadership role within a collaborative environment that values technical excellence and forward-thinking design.

What You’ll Do

• Lead HVAC and thermal energy system design across all project phases
• Oversee heating/cooling load calculations using IESVE or similar tools
• Design geothermal wellfields, district energy systems, and heat pump solutions (air- and water-source)
• Develop building automation and control strategies
• Support high-performance building initiatives, including LBC, PHIUS, and WELL certifications
• Coordinate directly with clients, architects, and internal teams
• Mentor and guide junior and mid-level engineers

What You’ll Get

• Hybrid flexibility across three New England office locations
• Exposure to cutting-edge, sustainable energy and building performance projects
• A collaborative, employee-owned culture with strong growth potential
• Opportunity to work on complex, high-impact projects across multiple industries

This role is ideal for a senior-level engineer who wants to combine technical leadership, sustainability-focused design, and client engagement within a forward-looking engineering firm.