Senior Mechanical CAD Designer

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

Job Description

Overview

CANDU Energy Inc./AtkinsRéalis Nuclear Inc. is actively seeking a qualified Senior Mechanical/Piping Designer to support engineering roles for nuclear projects in major areas, such, new build in the province of Ontario, international new builds, refurbishment, and continuous plant operation support modifications for nuclear power plants.

Your role

This position requires working on fast paced technically complex projects in the nuclear industries. Typical duties and essential functions will include but not be limited to the preparation, design, modification, coordination, and/or review of the following:

• Lead and coordinate complex mechanical/piping design activities across multiple projects with minimal supervision, ensuring quality, consistency, and adherence to project requirements.
• Prepare, check, and coordinate high-complexity 3D models, 2D drawings, layouts, and design deliverables.
• Provide technical guidance, mentorship, and oversight to junior and intermediate designers, promoting knowledge sharing and professional development.
• Review and approve design deliverables, drawings, 3D models, and construction packages for compliance with applicable codes, standards, CAD requirements, and project specifications.
• Enforce applicable CAD, drafting, modelling, and project standards, and support updates to procedures, work instructions, templates, and quality checklists.
• Coordinate multidisciplinary interfaces between engineering, design, procurement, construction, and client teams to resolve technical issues and ensure project alignment.
• Support project planning, including estimates, schedules, resource forecasting, progress tracking, and proposal inputs.
• Monitor CAD/drafting progress against budgets, schedules, and deliverable plans; identify risks, issues, and corrective actions.
• Lead model reviews, design reviews, constructability reviews, clash resolution sessions, and site/system walkdowns as required.
• Act as the primary design focal point for clients, stakeholders, and project teams, ensuring timely resolution of design-related issues.
• Drive continuous improvement in CAD standards, design processes, 3D modelling practices, procedures, templates, and quality checklists.

About you

• 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 considered strong assets.
• Working knowledge in AutoCAD, AutoCAD Raster Design, AutoCAD Plant 3D, Micro Station, Navisworks Manage and SolidWorks.
• Strong understanding of design execution processes, quality management systems, and engineering deliverable requirements.
• Advanced proficiency with Hexagon Smart 3D/S3D is required.
• Ability to take marked up engineering drawings and incorporate changes into AutoCAD files.
• Proven ability to mentor designers, perform technical reviews, and manage competing priorities while meeting project schedules.
• Excellent interpersonal skills with the ability to work with staff in a team environment as well as independently.
• Excellent leadership, communication, and stakeholder management skills.

Rewards & benefits

Explore the rewards and benefits that help you thrive - at every stage of your life and your career at AtkinsRéalis in Canada.

Enjoy competitive compensation, employee recognition, and a brilliant range of flexible benefits you can tailor to your health, wellbeing, financial and lifestyle needs.

Make the most of diverse opportunities for training and professional development to grow your skills and expertise.

And take advantage of our hybrid working culture and generous time-off policies to balance a fulfilling career with your personal life.

Be rewarded. Find out more.

About AtkinsRéalis

We’re AtkinsRéalis , a world‑class engineering services and nuclear organization. We connect people, data and technology to transform the world’s infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We’re committed to leading our clients across our various end markets to engineer a better future for our planet and its people.

Find out more.

Additional information

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Appropriate accommodation will be provided upon request