Senior Nuclear Mechanical CAD Designer — Lead 3D Piping

slihrms; Mississauga; Hybrid; CAD 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid work model

Professional development

Job summary

AtkinsRéalis is seeking a qualified Senior Mechanical/Piping Designer to support nuclear projects in Ontario and internationally. The role requires leading design activities, coordinating multi-project work, and mentoring junior designers to ensure compliance with CSA, ASME, and client standards.

The ideal candidate will have a college diploma with 10+ years in mechanical design, strong piping experience, and proficiency in AutoCAD, Plant 3D, and Hexagon Smart 3D.

Qualifications

• College diploma or equivalent work experience with a minimum of 10 years in mechanical design and drafting.
• Strong mechanical/piping design experience is required.
• Demonstrated experience leading design teams and coordinating multidisciplinary engineering projects in a fast-paced environment.
• Nuclear industry experience and familiarity with CSA, ASME, and client-specific standards are strong assets.
• Working knowledge in AutoCAD, AutoCAD Raster Design, AutoCAD Plant 3D, Micro Station, Navisworks Manage and SolidWorks.
• Advanced proficiency with Hexagon Smart 3D/S3D is required.

Responsibilities

• Lead and coordinate complex mechanical/piping design activities across multiple projects with minimal supervision, ensuring quality and project alignment.
• Prepare, check, and coordinate high-complexity 3D models, 2D drawings, layouts, and design deliverables.
• Mentor junior and intermediate designers and oversee design deliverables for compliance.
• Review and approve drawings, models, and packages per codes and project specs.
• Enforce CAD standards and support updates to procedures and templates.
• Coordinate interfaces between engineering, design, procurement, construction, and client teams.
• Support project planning, estimates, schedules, and proposal inputs.
• Monitor CAD progress against budgets and schedules, identify risks, and take corrective actions.
• Lead design reviews, constructability reviews, and site/system walkdowns as required.
• Act as primary design focal point for clients and project teams.

Skills

Mechanical design

Piping design

Team leadership

Project coordination

Stakeholder management

Education

College diploma

Tools

AutoCAD

AutoCAD Plant 3D

Micro Station

Navisworks

SolidWorks

Hexagon Smart 3D/S3D

Job description

AtkinsRéalis is seeking a qualified Senior Mechanical/Piping Designer to support nuclear projects in Ontario and internationally. The role requires leading design activities, coordinating multi-project work, and mentoring junior designers to ensure compliance with CSA, ASME, and client standards.

The ideal candidate will have a college diploma with 10+ years in mechanical design, strong piping experience, and proficiency in AutoCAD, Plant 3D, and Hexagon Smart 3D.