Benefits:

401(k) matching

Company parties

Competitive salary

Dental insurance

Flexible schedule

Health insurance

Paid time off

Training & development

Vision insurance

Mechanical Engineer – HVAC, Hydronics & Geothermal

Major Heating & Air Conditioning 📍 Denver Metro / Front Range, Colorado

About the Role

Major Heating & Air Conditioning designs and builds mechanical systems that have to work—under real conditions, in real buildings. Our projects include hydronic heating, geothermal systems, high-performance HVAC, radiant floors, domestic hot water, and integrated controls across residential and commercial applications in Colorado.

We are adding a Mechanical Engineer to support system design, execution, and long-term performance. This role works directly with leadership, project managers, and field teams to ensure systems are engineered correctly, installed properly, and operate as intended.

Responsibilities

Design HVAC, hydronic, geothermal, and domestic hot water systems for residential and commercial projects

Perform heat loss / heat gain calculations (Manual J, room-by-room, and commercial load calculations)

Develop mechanical layouts, piping schematics, and equipment selections

Support geothermal loop field design and system coordination

Review equipment submittals, shop drawings, and installation details

Assist with commissioning, system startup, and troubleshooting

Provide technical support to field teams during installation and service

Ensure designs comply with applicable codes and engineering best practices

Contribute to internal engineering standards and documentation

Qualifications

Bachelor’s degree in Mechanical Engineering or equivalent practical experience

Experience designing HVAC and mechanical systems

Strong understanding of hydronic systems, boilers, pumps, heat exchangers, and controls

Familiarity with furnaces, heat pumps, geothermal systems, and air distribution

Ability to think practically and adapt designs to field conditions

Clear communication skills and attention to detail

Professional Engineer (PE) license is a plus, not required.

What You’ll Work On

Hydronic and radiant heating systems

Ground-source geothermal systems

High-efficiency residential and commercial HVAC systems

Domestic hot water and mechanical plant design

Integrated mechanical and controls solutions

What This Role Is Not

A purely desk-based engineering position

A narrowly defined, single-system role

A bureaucratic or siloed corporate environment

Compensation & Benefits

Competitive salary based on experience

Health benefits and paid time off

Long-term growth opportunities as the company expands

Direct access to leadership and decision-makers