Sr. Refrigeration Engineer

Overview

Gray AES is seeking to add a Sr.
Refrigeration Engineer to its team, with the position based in one of our offices located in Atlanta, GA, Birmingham, AL, Cincinnati, OH, Charlotte, NC, Dallas, TX, Lexington, KY, Louisville, KY or Remote.

Why Gray AES?

Gray is a family-owned, fully integrated global service provider specializing in engineering, design, construction, digital, equipment manufacturing, and real estate services. Deeply rooted in EAC services, Gray serves both domestic and international customers across our core markets:

Food & Beverage,Manufacturing,Automotive,Distribution,Mission Critical, and Commercial. At Gray, our purpose is to make a positive difference in people s lives and build a better future.

Gray AES, the professional services arm of Gray, is a top-ranked firm offering architecture, engineering, and automation services across the globe. Made up of multidisciplinary teams of architects, engineers, and project managers, these collaborative teams work every day to provide unique, customized solutions for our customers. It’s the spirit of our people – the passion, commitment, and a great team environment – that makes our company a great place to work.

Who we want… (Requirements)

• Accredited Bachelor’s Degree in Mechanical Engineering or a closely related discipline
• Professional Engineering License is required.
• 10–12 years of experience in mechanical and refrigeration system design, with a focus on industrial applications such as food & beverage processing and cold storage facilities.
• Solid working knowledge of refrigeration systems, including ammonia, CO₂, and synthetic refrigerants, as well as secondary systems like chilled water, glycol, and brine.
• Proficient in AutoCAD, Revit, and BIM workflows, with experience in drafting, modeling, and coordinating design documentation.
• Strong understanding of building codes and industry standards, including IMC, IIAR, ASHRAE, and NFPA.
• Demonstrated ability to collaborate across disciplines, including mechanical, structural, electrical, architectural, and HVAC teams.
• Skilled in load calculations, equipment selection, and system optimization, with a focus on code compliance and operational efficiency.
• Excellent oral and written communication skills, with the ability to contribute to client meetings and technical presentations.
• Self-motivated, detail-oriented, and committed to professional growth and team collaboration.

What we expect… (Essential Functions)

• Lead and contribute to mechanical and refrigeration system design for assigned projects, ensuring alignment with client requirements and code standards.
• Oversee the staff assigned to the project as well as the work performed by the assigned staff.
• Develop and document design strategies for refrigeration systems, including pressurization, filtration, humidity control, and temperature regulation.
• Perform system evaluations for condition, capacity, and efficiency, and recommend improvements or upgrades.
• Generate design layouts, equipment sizing, and system schematics for ammonia, CO₂, synthetic, and secondary refrigeration systems.
• Conduct load calculations and assist in selecting appropriate systems and equipment to meet project specifications.
• Prepare design criteria and bid packages for subcontractor pricing and procurement.
• Use Revit, AutoCAD, and BIM tools to produce accurate and coordinated design documentation.
• Support construction administration activities, including reviewing shop drawings, responding to RFIs, and conducting site visits.
• Participate in client meetings and contribute to technical discussions and solution development.
• Assist in updating engineering design standards and mentoring junior engineers.
• Maintain active involvement in industry organizations such as IIAR, RETA, and ASHRAE to stay current with best practices and emerging technologies.
• Other duties as assigned.

Physical Demands & Work Environment

The physical demands described here are representative of those that must be met by a team member to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the…