Mechanical Facilities Engineer III

Merrick & Company is seeking a Mechanical Facilities Engineer III to support the design and delivery of HVAC and plumbing systems for national defense and mission-critical facilities. The role independently executes engineering design, develops coordinated construction documents, performs QA/QC reviews, supports proposals, and coordinates with multidisciplinary teams and government clients.

Responsibilities:

• Plan, conduct, and coordinate HVAC and plumbing system design, including engineering calculations, system layout, equipment selection, and development of construction documents
• Prepare coordinated construction documents including plans, details, schedules, and specifications (Divisions 22 and 23)
• Apply engineering judgment to resolve design challenges, including non-standard conditions, coordination conflicts, and constructability issues
• Perform QA/QC reviews of mechanical designs to ensure technical accuracy and code compliance
• Support proposal development, including mechanical scope definition, fee estimates, and schedules
• Interface with Federal, State, and Local government clients and participate in design reviews, charrettes, and technical discussions

Requirements:

• • Bachelor of Science in Mechanical Engineering from an ABET-accredited program
• • Minimum eight (8) years of experience in HVAC and plumbing system design
• • Professional Engineer (PE) license required
• • Client projects for this position require U.S. Citizenship
• • Experience designing HVAC and plumbing systems for commercial, institutional, or federal facilities
• • Experience performing engineering calculations and equipment selection for air handling systems, hydronic systems, and building domestic water systems
• • Experience developing coordinated construction documents (plans, details, schedules)
• • Experience developing and coordinating Division 22 and 23 specifications
• • Working knowledge of IMC, IPC, IBC, ASHRAE, SMACNA, and NFPA
• • Familiarity with DoD design criteria (UFC, UFGS)
• • Experience with HVAC load calculation software (e.g., Trane TRACE or equivalent)
• • Proficient in Revit for MEP coordination; familiarity with AutoCAD
• Remote employees must be based in the San Antonio area and able to meet with local clients as needed
• Relocation will be supported
• Periodic travel to project sites and other Merrick offices, including international travel, may be required
• • Experience supporting federal or DoD projects (e.g., USACE, AFCEC, NAVFAC)
• • Experience supporting construction administration (submittals, RFIs, site visits)
• • LEED, Green Globes, or other sustainability accreditation
• • Current passport