Senior Engineer - Mechanical Design
Listed on 2026-10-21
-
Engineering
Mechanical Engineer, HVAC Tech / Heating Engineer, Process Engineer, Manufacturing Engineer
National Design Build Services (NDBS) is a mechanical design/build firm based in St. Louis, MO. We design and deliver HVAC, refrigeration and process systems for commercial, industrial and mission‑critical facilities, including, food processing, manufacturing, data centers, and refrigerated warehouses. NDBS is part of the Kelso Industries family of MEP+ companies, which shares the core values of Partnership, Innovation, Excellence and Safety.
We take projects from design through fabrication and field installation, using off‑site prefabrication partners where it improves schedule, quality and job‑site safety. NDBS offers an excellent benefits and compensation program and strong career development opportunities.
National Design Build Services (NDBS) is a mechanical design/build firm based in St. Louis, MO. We design and deliver HVAC, refrigeration and process systems for commercial, industrial and mission‑critical facilities, including food processing, manufacturing, data centers, and refrigerated warehouses. NDBS is part of the Kelso Industries family of MEP+ companies, which shares the core values of Partnership, Innovation, Excellence and Safety.
We take projects from design through fabrication and field installation, using off‑site prefabrication partners where it improves schedule, quality and job‑site safety. NDBS offers an excellent benefits and compensation program and strong career development opportunities.
National Design Build Services (NDBS) is a mechanical design/build firm based in St. Louis, MO. We design and deliver HVAC, refrigeration and process systems for commercial, industrial and mission‑critical facilities, including food processing, manufacturing, data centers, and refrigerated warehouses. NDBS is part of the Kelso Industries family of MEP+ companies, which shares the core values of Partnership, Innovation, Excellence and Safety.
We take projects from design through fabrication and field installation, using off‑site prefabrication partners where it improves schedule, quality and job‑site safety. NDBS offers an excellent benefits and compensation program and strong career development opportunities.
Description:
The Senior Engineer supports the Lead Engineer on data centers, mission‑critical facilities and large industrial plants delivered through design‑build and design‑assist. You will own the day‑to‑day mechanical design on assigned projects: running calculations, selecting equipment, developing drawings and models, and coordinating with other disciplines, so design becomes complete, accurate construction documents. You will also supervise and mentor Design Engineers, assigning work, reviewing it for quality, and helping that engineer grow.
This role is a direct path toward a Lead Engineer position.
Position Type:
Full Time
Travel Required:
15%
Reporting:
Lead Engineer
Direct Reports:
Yes
Location:
St. Louis, MO 63146 OR Remote, United States
- Adhering to NDBS Core Values
- Safety
- We Answer Our Phones
- Always Innovating
- Collaborative Partnerships
- Reputation
- Entrepreneurship
- Design
- Develop the mechanical design on assigned projects from the basis of design and P&IDs through milestone reviews and issued‑for‑construction (IFC) drawings.
- Perform heat load, hydraulic, psychrometric and pipe sizing calculations, and select equipment such as chillers, air handlers, pumps and CDUs.
- Prepare drawings, schedules, details and Revit models, and run Navisworks clash detection with other disciplines.
- Coordinate day‑to‑day with plumbing, structural, electrical, civil and controls designers and sub‑consultants, and bring open issues to the Lead Engineer.
- Draft sequences of operation and support controls…
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