Senior Mechanical Facilities Engineer

Merrick & Company is seeking a Senior Mechanical Facilities Engineer for its High Performance Facilities team in San Antonio, Texas. The role designs and delivers HVAC and plumbing systems for national defense and other mission-critical projects, while providing technical leadership, client coordination, and mentoring to junior staff.

Responsibilities:

• Develop and coordinate HVAC and plumbing system design, including engineering calculations, system layout, equipment selection, HVAC controls, and development of coordinated construction documents
• Support development and technical oversight of Division 22 and 23 specifications, ensuring alignment with UFC, UFGS, and applicable codes and standards including ICC, IMC, IPC, ASHRAE, and NFPA
• Perform QA/QC reviews of mechanical designs, ensuring technical accuracy, code compliance, and alignment with project requirements
• Support proposal development, including defining mechanical scope and developing fee and design schedule estimates
• Interface directly with Federal, State, and Local government clients, including participation in design reviews, value engineering studies, charrettes, and technical discussions

Requirements:

• Bachelor of Science in Mechanical Engineering from an ABET-accredited program
• Minimum twelve (12) years of experience in HVAC and plumbing system design
• Professional Engineer (PE) license required
• Client projects for this position require U.S. Citizenship
• Demonstrated experience designing HVAC and plumbing systems for commercial, institutional, or federal facilities
• Experience in performing engineering calculations and equipment selection for air systems, hydronic systems, and building water systems
• Experience developing coordinated construction documents (plans, details, schedules)
• Experience developing and coordinating Division 22 and 23 specifications
• Working knowledge of applicable codes and standards including 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
• Experience supporting federal or DoD projects (e.g., USACE, AFCEC, NAVFAC)
• Experience supporting construction administration (submittals, RFIs, site visits)
• Familiarity with Life Cycle Cost Analysis (LCCA) and energy modeling (ASHRAE 90.1)
• LEED, Green Globes, or other sustainability accreditation
• Current passport