Mechanical Designer 3 - Nuclear Power
Location
Wilmington, DE
Wage
$68,325 – $104,385/yr
Employment Type
Full-time
Apply for This Position
Posted on August 22, 2026
Job Description
Overview
This position at Sargent & Lundy allows for a hybrid work schedule and offers the opportunity to work with multi-disciplined engineering and design project teams in developing mechanical design deliverables for nuclear power projects.
Responsibilities
- Develop mechanical general arrangement, piping isometric, pipe support, and mechanical equipment layout drawings in a 3-D model.
- Utilize Hexagon’s SmartPlant S3D modeling software and SPF database to generate mechanical design deliverables, BOMs, and commodity lists.
- Understand and interpret piping & instrumentation diagrams developed using SPID.
- Act as the mechanical design team lead in the coordination of detailed design phases.
- Resolve clashes and discrepancies in the 3D model and report status.
- Coordinate and provide guidance to other designers and project team members.
- Independently plan and execute design of mechanical deliverables.
- Provide guidance as a mentor in the development of less experienced drafters and designers.
Requirements
- Minimum three years of detailed design experience in the development of mechanical plant design drawings.
- Experience with SmartPlant S3D modeling software.
- Understanding of the integration aspects of SPID, SPF and S3D.
- Experience in clash detection resolution and discrepancy checks between deliverables.
- Ability to interface with engineering and design teams of other disciplines.
Benefits
- Health Insurance
- Dental
- Vision
- PTO
- 401k
Additional Information
- Hybrid work schedule with a mix of in-office and remote work.
Benefits
Health Insurance
Dental
Vision
PTO
401k
How this job compares in Wilmington, DE
Pay in context
At roughly $42/hr, this posting sits about 38% above the $30/hr median for welding jobs across Delaware — toward the top of a $29–$31/hr middle band drawn from 23 postings with published pay. Put another way, it pays more than about 78% of the comparable postings we have wage data for. Pay that far above local median usually comes attached to something: a harder cert requirement, travel, night shift, or overtime that isn't really optional. Worth establishing which before you accept.
The local market in Wilmington, DE
Wilmington, DE currently has 7 other active welding openings besides this one, spread across 6 employers. 4 of them were added in the last week. Across Delaware as a whole we're tracking 34 other active welding openings from 21 employers. That's enough local activity to be worth comparing two or three offers before committing. Browse every welding job in Wilmington, or widen the search to Delaware.
Sargent & Lundy currently has 2 other openings live in Delaware, which is usually a sign of either steady growth or steady turnover — worth asking which in the interview.
The most active employers in Delaware at the moment, by number of open welding reqs, are Adecco (12), Sargent & Lundy (2), and EAGLE GROUP Foodservice Equipment Division (2). Volume like that usually means either a genuine expansion or a staffing agency working several client sites — worth knowing which before you apply.
Similar openings near Wilmington, DE
- Structural Designer 3 - Nuclear Power — Sargent & Lundy · Wilmington, DE · $68K–$104K/yr
- Senior Mechanical Designer 1 - Nuclear Power — Sargent & Lundy · Wilmington, DE · $78K–$119K/yr
- Service Technician — GRUNDFOS · Wilmington, DE · $26–$37/hr
- Field Service Representative/Technician — Stiles Machinery · Wilmington, DE
- Staff Structural Engineer — Arcadis · Wilmington, DE · $85K–$125K/yr
- Pipefitter Shop Supervisor — Ralph G. Degli Obizzi & Sons, LLC · Wilmington, DE
Pay figures are medians computed from live postings in the Welding Pros index, not from survey data, and they move as employers post. Mechanical Designer 3 - Nuclear Power figures were last recalculated when this page was built.