Mechanical Design Engineer

National Design Build Services•Maryland Heights, MD

About The Position

The Mechanical Design Engineer at National Design Build Services (NDBS) participates in all aspects of the HVAC design/build process, from project conception through detailed design and field coordination. The engineer delivers project design assignments within schedule and budget parameters while satisfying client contracts, independently or as part of an engineering team. The role includes collaboration with preconstruction and operations teams, as well as field engineering and project execution support. NDBS is a St. Louis-based mechanical design/build firm delivering HVAC, refrigeration, and process systems for commercial, industrial, and mission-critical facilities, including food processing, manufacturing, data centers, and refrigerated warehouses. The company takes projects from design through fabrication and field installation and uses off-site prefabrication partners when beneficial to schedule, quality, and job-site safety. The position is full-time, based in St. Louis, Missouri, or remote within the United States, and requires 20–30% travel.

Requirements

Bachelor’s degree in a related engineering field; mechanical engineering preferred.
Related experience in the HVAC/R industry.
Self-motivated, with strong time and task management skills.
Ability to work to deadlines, multitask, and adapt to changing priorities.
Ability to interact effectively with others in a team environment.
Strong leadership, organizational, and communication skills.

Nice To Haves

Experience in healthcare design.

Responsibilities

Perform project load calculations.
Design and plan layouts for equipment, duct systems, and piping systems.
Develop HVAC designs from initial concepts through construction drawings using Revit.
Perform application engineering, including sequences of operations, load calculations, psychrometrics, and refrigeration.
Participate in field engineering, assisting with project execution, trade coordination, and document management.
Understand and apply code requirements.
Conduct internal project turnover meetings to identify scope, risks, resource requirements, communications, schedules, and budgets.
Collaborate with preconstruction to translate project bid scope into design documents.
Collaborate with operations to establish a shared understanding of project scope and execution.
Support quality control through on-site project visits and punch list creation.