Senior HVAC Design Engineer – Industrial & Commercial

Sterling St James LLC; Appleton (WI); On-site; USD 144,000 - 176,000; Full time

Job summary

Sterling St James LLC in Wisconsin’s Fox Valley area is seeking a Mechanical Project Engineer to design and engineer advanced HVAC systems for industrial and commercial facilities. This direct-hire role offers up to $160,000 base salary and a flexible 1st shift, with a strong emphasis on client collaboration and design leadership.

Reporting to the Director, you’ll collaborate with sales, estimating and fabrication teams, perform calculations, develop CAD/Revit models, and support site reviews.

Qualifications

• Bachelor’s Degree in Mechanical Engineering (BSME), Registered Professional Engineer (PE), or Licensed HVAC Designer status required.
• 3+ years of hands-on HVAC design experience, ideally developed within a fast-paced mechanical contractor setting.
• Software proficiency: AutoCAD, Revit, HVAC load calculation programs, and Excel.
• Strong client-facing presence with excellent presentation skills.
• CEM or LEED AP accreditation is a strong bonus.
• Willingness to travel locally within ~1 hour of Fox Valley area.

Responsibilities

• Analyze customer inquiries and site requirements to determine project scope, feasibility, and HVAC solutions.
• Design high-performance HVAC systems for commercial and industrial facilities.
• Perform mechanical engineering calculations: heating/cooling loads, air distribution, boiler/chiller plant, pumps and piping, steam routing.
• Develop schematic designs and CAD/Revit models during bidding to estimate labor and materials.
• Draft technical proposal letters and scope documents for owners, GCs, and plant managers.
• Coordinate construction drawings and plan reviews to ensure compliance with codes.
• Support cross-functional teams and mentor junior engineers.

Skills

AutoCAD

Revit

HVAC load calculations

Excel

Client-facing

Education

Bachelor’s Degree in Mechanical Engineering

Professional Engineer (PE) license

State-Licensed HVAC Designer

Tools

AutoCAD

Revit

HVAC load calculation software

Job description

Sterling St James LLC in Wisconsin’s Fox Valley area is seeking a Mechanical Project Engineer to design and engineer advanced HVAC systems for industrial and commercial facilities. This direct-hire role offers up to $160,000 base salary and a flexible 1st shift, with a strong emphasis on client collaboration and design leadership.

Reporting to the Director, you’ll collaborate with sales, estimating and fabrication teams, perform calculations, develop CAD/Revit models, and support site reviews.