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Mechanical Engineer (HVAC & Plumbing Design)

Company:
Gauthier, Alvarado & Associates, Inc.
Location:
Kings Park West, VA, 22032
Posted:
December 01, 2025
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Description:

Gauthier, Alvarado & Associates, a Northern Virginia Architectural/Engineering firm, is a multi-disciplined engineering firm in Fairfax, Virginia. We provide Architectural, Structural, Mechanical, Plumbing and Electrical engineering for a variety of projects that include commercial office buildings, educational facilities, public agencies, and interior tenant build-outs. GAA is seeking a Mechanical Engineer with experience in project management as well as developing construction documents for HVAC, Mechanical, Plumbing and control systems. EIT Certification is required, LEED certification is desirable.

We are interested in candidates who are self-motivated, possess a great attitude and who will be a vital member of our firm working closely with our in-house Architects, structural and electrical engineers. The person will be involved in a variety of projects ranging throughout Virginia, Washington, DC, and Maryland. Candidates must be well-organized, clear communicators, and proficient in AutoCAD, BIM/Revit, Carrier HAP Program (or similar load estimating programs), Microsoft Word and Excel.

This role will be performed out of the Fairfax, VA office 4 days a week with one remote day each week.

Candidates must be current U.S. residents and legally authorized to work in the United States at the time of application. We are unable to sponsor visas at this time.

RESPONSIBILITIES

Review projects for interdisciplinary coordination and design completeness

Manage the mechanical engineering team, assign tasks, and oversee project workflows

Prepare mechanical and plumbing construction documents including drawings, specifications, and detailed system layouts

Ensure all designs comply with applicable building codes, standards, and sustainability requirements

Provide construction administration services

QUALIFICATIONS

Bachelor’s degree in Mechanical Engineering from an ABET-accredited university

EIT certification required; PE license preferred or in process of obtaining

LEED certification is desirable

Minimum of 4 years of experience in mechanical design for commercial, educational, and government facility projects and have demonstrated project management experience in building systems and construction

Hands-on experience with construction documents, writing specifications, and understanding building codes

Strong knowledge of HVAC system design including air and hydronic distribution, refrigeration systems, boilers, chillers, pumps, air handling units, and building controls

Experience with plumbing system design and analysis

Construction observation experience is preferred

Working knowledge of relevant codes, regulations, and industry design standards

Proficiency in AutoCAD, BIM/Revit, Carrier HAP (or similar load calculation programs), and Microsoft Office

Excellent communication, organization, and writing skills

Ability to work from the Fairfax, VA office 4 days per week with one remote day

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