HVAC Design Engineer - Commercial Industrial

Mechanical Service Corporation; Whippany (NJ); On-site; USD 140,000 - 160,000; Full time

Job summary

MSC (Mechanical Service Corporation) seeks an experienced HVAC Design Engineer to lead design/build and retrofit project development for commercial, industrial, and institutional clients. You will assess field conditions, develop viable mechanical solutions, and prepare estimates covering equipment, materials, and labor.

The ideal candidate can produce clear design documentation and transition projects to operations with thorough handoffs; PE license is a plus, and a strong understanding of

Qualifications

• Degree in Mechanical Engineering or equivalent combination of education and field experience.
• 5–10 years of HVAC design/build work in commercial, industrial, or institutional environments.
• Ability to develop mechanical solutions without existing plans or specifications.
• Proficiency in load calculation and equipment selection software (HAP, Trace 700, or equivalent).
• Experience producing design drawings using CAD or similar tools.
• Strong estimating skills for equipment, material, and labor costs.
• Solid knowledge of ASHRAE and local mechanical codes.
• Excellent verbal and written communication skills; self-directed.

Responsibilities

• Design & Engineering: conduct site surveys and develop original HVAC/processing designs.
• Estimating & Proposal: prepare detailed project estimates and professional proposals.
• Project Coordination: hand off awarded projects and provide technical support during execution.
• Ensure documentation supports installation and compliance with codes and standards.
• Collaborate with sales to refine proposals and tailor solutions for owners.

Skills

Load calculation software

CAD

Estimating skills

HAP / Trace 700

PE license (plus)

Strong communication

Education

Mechanical Engineering degree

Tools

CAD software

HVAC design tools

Job description

ABOUT US

MSC (Mechanical Service Corporation) is a leading mechanical service company specializing in complex HVAC, process cooling, and building automation systems for commercial, industrial, and institutional environments. As a recognized leader in the Northeast region since 1976, we are the technical authority on complex HVAC, process cooling, and building automation systems, with a practice that spans advanced diagnostics, design/build, retrofit and replacement, and long-term service.

JOB SUMMARY

MSC is seeking an experienced HVAC Design Engineer to lead design/build and retrofit project development. This is a technical role focused on originating and developing custom mechanical solutions for building owners in commercial, industrial, and institutional settings. The ideal candidate possesses the technical depth to assess existing conditions in the field, develop viable mechanical solutions, produce clear design documentation, and prepare accurate estimates covering equipment, materials, and labor.

KEY RESPONSIBILITIES

Design & Engineering

• Conduct site surveys of existing mechanical systems to assess conditions and define project scope


• Develop original HVAC and process cooling system designs for commercial, industrial, and institutional facilities, with the ability to define scope and solutions independently where no plans or specifications exist


• Perform load calculations and equipment sizing using industry-standard tools


• Select appropriate equipment and specify systems, including air handling units, chillers, cooling towers, heat exchangers, piping, controls, and related components


• Produce design drawings, schematics, and supporting documentation sufficient to define scope and support installation

Estimating and Proposal Development

• Prepare detailed project estimates encompassing equipment, materials, and labor


• Develop clear, professional proposals tailored to direct-to-owner sales opportunities


• Collaborate with the sales team to present and refine proposals as needed

Project Coordination & Technical Support

• Transition awarded projects to operations and field teams with thorough documentation and handoff


• Provide ongoing technical support to field and office teams during project execution


• Conduct site visits as needed to verify conditions and support installation

QUALIFICATIONS

• Degree in Mechanical Engineering or equivalent combination of technical education and field experience


• 5-10 years of experience in HVAC design/build work in commercial, industrial, or institutional environments


• Demonstrated ability to develop mechanical system solutions without existing plans or specifications


• Proficiency in load calculation and equipment selection software (HAP, Trace 700, or equivalent)


• Experience producing design drawings using CAD or similar tools


• Strong estimating skills, with the ability to accurately quantify equipment, material, and labor costs


• Solid working knowledge of applicable codes and standards, including ASHRAE and local mechanical codes


• Excellent verbal and written communication skills


• Resourceful, self-directed, and comfortable managing multiple priorities simultaneously


• Professional Engineer (PE) license a plus, but not required

SALARY & BENEFITS

• Salary $140,000 - $160,000


• Comprehensive benefits package including paid time off, employer-subsidized health insurance, 401(k) with match, and long-term and short-term disability insurance


• Opportunities for professional growth and development


• Collaborative and supportive work environment


• Train directly with owner/lead PE

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