Senior Mechanical Designer: 3D Plant Layout Lead

Sargent Lundy; Chattanooga (TN); Hybrid; USD 78,000 - 119,000; Full time

Benefits offered by this job

Health plans: Medical, Dental, Vision

Life & Accident Insurance

Disability Coverage

Employee Assistance Program

Job summary

Sargent & Lundy is seeking a senior mechanical designer to develop GA, piping isometrics, and equipment layouts in a 3-D model using SmartPlant S3D. You will generate BOMs and commodity lists, interpret P&ID diagrams, and maintain design integrity across disciplines.

The role requires mentoring juniors, coordinating with project teams, and delivering complete designs on a hybrid schedule with in‑office presence three days per week.

Qualifications

• Experience with SmartPlant S3D modeling including SPID, SPF and S3D integration.
• Clash detection resolution and discrepancy checks between deliverables.
• Interface with SmartPlant Administrators for templates and catalogs.
• Drawing Presentation Rules Setup and plant model data management.

Responsibilities

• Work with multi-disciplined teams to develop mechanical GA, piping isometrics, pipe supports, and equipment layouts in a 3-D model.
• Generate mechanical design deliverables, BOMs, and commodity lists using S3D/SPID/SPF.
• Interpret piping & instrumentation diagrams and ensure physical design aligns with engineering requirements.
• Act as mechanical design team lead coordinating detailed design phases for the integrated model.
• Resolve clashes and report status; mentor less-experienced drafters and designers.

Skills

SmartPlant S3D modeling

SPID/SPF/SP3D integration

Clash detection

3D plant layout modelling

Deliverables review

Vendor drawings review

Interdisciplinary interface

Tools

MicroStation

AutoCAD

Job description

Sargent & Lundy is seeking a senior mechanical designer to develop GA, piping isometrics, and equipment layouts in a 3-D model using SmartPlant S3D. You will generate BOMs and commodity lists, interpret P&ID diagrams, and maintain design integrity across disciplines.

The role requires mentoring juniors, coordinating with project teams, and delivering complete designs on a hybrid schedule with in‑office presence three days per week.