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Posted 5 months ago

Senior Mechanical CAD Designer

@ AtkinsRéalis

Mississauga, Ontario

Full-time10+ years experience
Apply now
SIGNALS

Overview

AtkinsRéalis is hiring a Senior Mechanical/Piping Designer to support nuclear projects, including new builds in Ontario, international builds, refurbishments and plant operation modifications. The role covers designing and coordinating mechanical systems, preparing drawings and site inspections, and requires at least 10 years of mechanical design and drafting experience. The posting offers competitive pay, flexible benefits, an employee share plan and a defined contribution pension plan.

Responsibilities:

  • Prepare, design and modify mechanical and piping systems for nuclear projects
  • Develop designs and technical specifications for HVAC, plumbing and building control systems
  • Prepare drawings and construction documents
  • Coordinate system requirements with electrical, architectural and regulatory stakeholders
  • Conduct site visits and inspections of construction progress

Requirements summary:

  • College diploma or equivalent experience
  • Minimum 10 years in mechanical design and drafting
  • Working knowledge of SmartPlant 3D
  • Working knowledge of AutoCAD, Plant 3D, MicroStation, Navisworks and SolidWorks
  • Ability to incorporate marked-up drawing changes into AutoCAD files
  • ASME Code knowledge considered an asset

Tools & skills

Benefits mentioned

Retirement plan
Source and dates

Employer career site / ATS feed · workday

Employer posting date
2026-05-31
First seen by our source
2026-10-08
Source record updated
2026-10-16

These dates describe the source record, not a live verification that the employer is still hiring. Check the original posting.

Job details

SenioritySenior
DepartmentEngineering
Experience10+ years
Hours per week40 (estimated)
Work settingOffice, Client sites, Plant or factory
PositionMostly sitting
Physical demandsphysical low · computer high
LanguagesEnglish
EducationCollege diploma (required)
Perks mentionedFlexible hours, Retirement plan, Stock or equity

Summary and details written by AI from the posting; the employer’s posting is the authority.

AtkinsRéalis

Saved company profile

Historical company information from a saved The Jobs API profile (LinkedIn/Crunchbase fields). It is not live-verified; figures may have changed. Missing values remain unknown.

Full company description

We are 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. ---

LinkedIn followers
522,517
People associated on LinkedIn
46,698
Reported office locations
  • 455 René-Lévesque Blvd W, Montreal, QC H2Z 1Z3, CA
Business categories
  • Construction
  • Innovation Management
  • Mining
  • Infrastructure
  • Transportation
  • Energy
  • Civil Engineering
Other recorded names
  • AtkinsRéalis
Profile identifies a recruitment agency
No
Reported total investment
1,128,343,771

Currency and observation date were not supplied; this is not a current valuation or a funding round.

We are 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. ---

FieldValue
IndustryEngineering Services
Company size10,001+ employees
HeadquartersMontreal, QC
Organization typePublic Company
Open jobs on Jobsy121
LinkedInView page
Job description

Job Description

Come join us in reshaping the future with AtkinsRéalis. AtkinsRéalis is dedicated in engineering a better future for our planet and its people.

AtkinsRéalis is one of Canada's largest private sector nuclear engineering groups. We have been providing a wide range of services to the nuclear industry in Canada and around the world since for more than 60 years. We are proud to be the steward of Canadian CANDU nuclear technology.

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 as, new build in the province of Ontario, international new builds, refurbishment, and continuous plant operation support modifications for nuclear power plants.

How will you contribute to the team?

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:

  • Reviewing the status of existing buildings prior to project design, performing site take offs.
  • Assist in developing designs and technical specifications for systems such as Heating, Air conditioning, Ventilation, boilers, plumbing, chilled water, building controls, along with other related systems.
  • Assisting others in the office with several projects – a knowledge sharing atmosphere.
  • Preparing drawings and construction documents.
  • Coordinating system requirements with the electrical department, architects, relevant authorities.
  • Conducting site visits and inspections to review progress of construction.

The Ideal Candidate:

  • College diploma or equivalent work experience with a minimum of 10 years in mechanical design and drafting.
  • Working knowledge of Smart Plant 3D(SP3)/Smart is a must.
  • Working knowledge in AutoCAD, AutoCAD Raster Design, AutoCAD Plant 3D, Micro Station, Navisworks Manage and SolidWorks.
  • Ability to take marked up engineering drawings and incorporates changes into AutoCAD files.
  • ASME Code knowledge considered an asset
  • Excellent interpersonal skills with the ability to work with staff in a team environment as well as independently.

Why choose AtkinsRéalis as an employer?

Because we offer:

  • The opportunity to work on various major projects for internal and external clients.
  • An exciting environment where work-life balance is important.
  • A wide array of learning and development opportunities.
  • Competitive pay, flexible benefits, an employee share plan, and a defined contribution pension plan.
  • A work environment focused on health and safety.

Are you up for this challenge? Apply today and join our team to help engineer a Better Future for our Planet and its People.

About AtkinsRéalis

Created by the integration of long-standing organizations dating back to 1911, AtkinsRéalis is a world-leading professional services and project management company dedicated to engineering a better future for our planet and its people. We create sustainable solutions that connect people, data and technology to transform the world's infrastructure and energy systems. We deploy global capabilities locally to our clients and deliver unique end-to-end services across the whole life cycle of an asset including consulting, advisory & environmental services, intelligent networks & cybersecurity, design & engineering, procurement, project & construction management, operations & maintenance, decommissioning and capital. The breadth and depth of our capabilities are delivered to clients in key strategic sectors such as Engineering Services, Nuclear, Operations & Maintenance and Capital.

At AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences.

AtkinsRéalis cares about your privacy. AtkinsRéalis and other subsidiary or affiliated companies of AtkinsRéalis (referred to throughout as “AtkinsRéalis”) are committed to protecting your privacy. Please consult our Privacy Notice on our Careers site to know more about how we collect, use and transfer your Personal Data.

By submitting your personal information to AtkinsRéalis, you confirm that you have read and accept our Privacy Notice.

Worker Type

Employee

Job Type

Regular

At AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences.

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