Senior Mechanical Engineer

Haag, a Salas O'Brien Company • Laconia, NH

45d • $110,000 - $150,000 • Hybrid

About The Position

The Senior Mechanical Engineer leads the design, coordination, and
delivery of complex building HVAC and thermal energy systems. This role provides
technical leadership across heating, cooling, ventilation, and control systems
while managing multidisciplinary design teams and working directly with clients.
Candidates with extensive HVAC systems design experience or deep expertise in
building energy modeling and life-cycle cost analysis are encouraged to apply.

Requirements

• Bachelor of Science in Mechanical Engineering (BSME) required
• Ideally minimum of 10 years of experience designing and leading design teams for building HVAC systems
• Demonstrated experience with complex HVAC and thermal energy systems (required)
• Proficiency with IESVE or similar HVAC system load calculation software required
• Strong written and verbal communication skills, with comfort in client-facing environments
• Proven ability to manage multiple projects, priorities, and stakeholders

Nice To Haves

• Professional Engineer (PE) license preferred

Responsibilities

• Lead the design and delivery of complex HVAC and thermal energy systems across all project phases
• Provide technical leadership, mentorship, and quality oversight to mechanical design teams
• Design and coordinate thermal energy generation and distribution systems, including hot water, steam, chilled water, geothermal wellfields, water-source and air-source heat pumps
• Perform and oversee engineering calculations to determine HVAC system loads using IESVE or similar tools
• Design HVAC systems including air handling, energy recovery, precision temperature and humidity control, and radiant heating and cooling
• Develop building automation and control strategies to support performance, efficiency, and occupant comfort
• Prepare mechanical master plans and support long-term infrastructure planning
• Support sustainable design initiatives and certification efforts, including LEED, LBC, PHIUS, and WELL
• Collaborate with architects, owners, utilities, and contractors to resolve technical challenges
• Participate in client meetings, presentations, and interdisciplinary coordination efforts

Benefits

• Medical, dental, and vision insurance
• 401(k) with company match
• Paid time off and company holidays
• Wellness programs and employee assistance resources
• Professional development support

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level