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Added 10 mins ago
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Senior System Engineer – OS Kernel
Aptiv
Ottawa, ON
- Full-time
Wind River (An Aptiv Company) is seeking a Senior System Engineer – OS Kernel to contribute to the development of core kernel components for the VxWorks real-time operating system. In this…
Added 24 mins ago
HR
RAM Specialist, Senior
Hitachi Rail
Toronto, ON
- Full-time
The Senior RAM Specialist will report directly to the RAM Engineering Manager and work with the RAM team in performing RAM activities and will work collaboratively with other design team…
Added 24 mins ago
HR
Technical Safety Specialist
Hitachi Rail
Burnaby, BC
- Full-time
Minimum 10 years of experience in a senior technical role in train control systems or automation in other industries such as aerospace, defense, automotive, medical or nuclear
Added 24 mins ago
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Intermediate Electrical Engineer
Kleinfelder
Calgary, AB
- Full-time
The Intermediate Electrical Engineer will provide electrical engineering leadership within our interdisciplinary and innovative project team. The Engineer will be a critical part of our…
Added 24 mins ago
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Intermediate Electrical Engineer
Kleinfelder
AB · Edmonton, AB
- Full-time
The Intermediate Electrical Engineer will provide electrical engineering leadership within our interdisciplinary and innovative project team. The Engineer will be a critical part of our…
Added 24 mins ago
MI
Staff/Senior Embedded Systems Engineer
Movellus Inc.
Markham, ON
- Full-time
Debug and resolve system issues, improve code quality, implement maintainable software practices.
Added 24 mins ago
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IT Cloud & DevOps Engineer
Survalent
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Build the technology powering critical utility infrastructure. Survalent is seeking a Cloud & DevOps Engineer to design, secure, and optimize cloud environments across Azure, AWS, and OT…
Added 24 mins ago
HR
Technical Specialist, Senior - Vital Software
Hitachi Rail
Toronto, ON
- Full-time
The Senior Software Technical Specialist leads the design, development, integration, and testing of complex operationally critical and safety-critical software systems within the railway…
Added 25 mins ago
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AI Software Engineer
Snowflake
Remote, Canada
- $176,300 to $226,300 CAD / year
- Full-time
- Remote
We're looking for a Software Engineer - AI to join our growing Toronto engineering team. You'll design, build, and ship AI-powered systems and services that are used by thousands of…
Added 2 hours ago
MA
AI Architech
Meeru AI Inc
Remote, Canada
- Other
- Remote
…partner closely with US-based AI leadership and the Staff AI Engineer on grounding and evaluation rigor, and raise the bar for how deterministic, auditable AI gets built across the…
Added 2 hours ago
GD
Co-op Winter 2027 – Systems Test Engineering - 4-8 Months
General Dynamics Missions System International
Ottawa, ON
- Internship
Working under guidance from a senior engineer, develop and perform test cases to validate specific requirements;
Added 4 hours ago
HR
Technical Safety Specialist
Hitachi Rail
Toronto, ON
- Full-time
Minimum 10 years of experience in a senior technical role in train control systems or automation in other industries such as aerospace, defense, automotive, medical or nuclear
Added 4 hours ago
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Quality Assurance Manager
GagaMuller
Regina, SK
- Full-time
Added 4 hours ago
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Software Development Engineer macOS
BeyondTrust
Canada
- Full-time
At least 2 years’ commercial software engineering experience for the Software Development Engineer level; typically, 5 or more years, including demonstrable technical leadership, for the…
Added 4 hours ago
RI
Senior Backend Java Engineer - Risk Calculations
Rose International
Mississauga, ON
- Full-time
Prior investment banking risk system experience is highly desirable.
Added 4 hours ago
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Tests and Validations Specialists
EERS
Montreal, QC
- Full-time
We have just launched a very challenging and exciting new project which will allow the System Test Specialist to be directly involved in all phases of product design. Reporting to the…
Added 4 hours ago
KI
Intermediate Electrical Engineer
Kleinfelder Inc
Edmonton, AB · Calgary, AB
- Full-time
The Intermediate Electrical Engineer will provide electrical engineering leadership within our interdisciplinary and innovative project team. The Engineer will be a critical part of our…
Added 5 hours ago
W
Software Engineer or Senior Software Engineer - Data Hub
Workday
Vancouver, BC · Canada, BC, Vancouver
- Full-time
Basic Qualifications (Senior Software Engineer):
Added 5 hours ago
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Senior Electrical Satellite Systems Engineer | Remote Opportunity | Fastwater Staffing
HIKINEX
Remote, Canada
- Full-time
- Remote
The successful candidate will define electrical system architecture, oversee subsystem interfaces, manage requirements and technical documentation, and lead verification and validation…
Added 8 hours ago
GM
Senior DevOps Software Quality Automation Tools Engineer
General Motors
Markham, ON
- Full-time
…high-quality tools and platforms that empower developers, testers, and system engineers across the organization. Our work sits at the intersection of software quality assurance, DevOps, and…
Added 9 hours ago
ES
Senior ServiceNow Architect
EPAM Systems
Canada
- Full-time
Upgrade & Performance Optimization: Manage periodic instance upgrades, monitor system performance, troubleshoot bottlenecks, and optimize database and script execution
Added 9 hours ago
SL
Python Developer
Staffingine LLC
Toronto, ON
- Full-time
Python Backend Engineer/Senior Software Engineer
Added 9 hours ago
RC
Renewable Energy Engineer (Entry-Level)
Renewable Careers
Toronto, ON
- $80,000 to $110,000 CAD / year
- Full-time
…are expanding our Toronto team and looking for an entry-level engineer who wants to help build Canada's clean energy…
Added 9 hours ago
SL
Junior Python Engineer
Staffingine LLC
Toronto, ON
- Contract
We are seeking a Senior Software Engineer to design and build highly scalable, secure, and high-performance solutions within our core banking platform.
Added 13 hours ago
CL
Senior Site Reliability Engineer, Data Infrastructure
Chainlink Labs
Remote, Canada
- Full-time
- Remote
The Senior Site Reliability Engineer will own the reliability and operational performance of large-scale distributed systems and data infrastructure. This role will strengthen the…

AtkinsRéalis

Senior Mechanical Engineer

Mississauga, ON, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Dec 31, 2026
Experience: Typically 8-12 years of experience in mechanical design, tooling, equipment, automation, field engineering, or nuclear projects.
Posting language: English
Posted: Oct 8, 2026

Original job description

Job Description

The Senior Mechanical Engineer will support refurbishment, retube, field services, and new-build nuclear projects. This role combines design engineering expertise with field execution support, providing technical leadership throughout the full lifecycle of tooling, equipment, and mechanical systems from concept development through deployment, commissioning, maintenance, and field operations.

The successful candidate will lead complex engineering assignments, support tooling and field execution activities, mentor junior staff, and interface with clients, suppliers, and site personnel to ensure safe, reliable, and efficient project delivery.

Your role within the team

Lead conceptual, preliminary, and detailed mechanical design activities for Retube Tooling, specialized equipment, and field service systems.
Execute and oversee engineering work packages supporting refurbishment, retube, maintenance, outage, and new-build projects.
Provide technical leadership for design, procurement, fabrication, assembly, testing, commissioning, deployment, and field implementation activities.
Support field execution teams by resolving technical issues, developing corrective actions, and providing engineering guidance during equipment installation, operation, maintenance, and troubleshooting.
Prepare and review engineering deliverables including design requirements, design descriptions, technical specifications, calculations, drawings, test procedures, commissioning plans, operating instructions, and design change packages.
Perform and verify engineering analyses related to machine design, structural integrity, mechanisms, materials, hydraulics, pneumatics, lifting systems, and pressure-retaining components.
Coordinate and lead multidisciplinary teams consisting of engineers, technologists, designers, manufacturing personnel, suppliers, and field staff.
Interface directly with clients, vendors, contractors, and station personnel to define requirements and resolve technical challenges.
Mentor and provide technical oversight to junior engineers, designers, and technologists.
Travel periodically to customer sites and nuclear generating stations to support installation, commissioning, outage execution, inspections, and troubleshooting activities.

Why choose AtkinsRéalis as an employer?

Opportunity to work on major nuclear refurbishment, retube, field services, and new-build projects.
Exposure to both engineering design and field implementation activities.
Career growth through leadership, mentoring, and technical specialization opportunities.
Competitive compensation, flexible benefits, employee share plan, and defined contribution pension plan.
Strong commitment to safety, quality, innovation, and professional development.
Collaborative environment that values technical excellence and work-life balance.

About You

Bachelor's degree in Mechanical Engineering, Mechatronics Engineering, or equivalent.
Registered Professional Engineer (P.Eng.) in Ontario, or eligible for registration.
Typically 8-12 years of experience in mechanical design, tooling, equipment, automation, field engineering, or nuclear projects.
Strong understanding of machine design, mechanics of materials, manufacturing methods, and mechanical system integration.
Experience leading engineering tasks and coordinating multidisciplinary teams.
Experience supporting field execution, commissioning, maintenance, outage, or refurbishment activities is an asset.
Familiarity with nuclear industry codes and standards including ASME and CSA requirements is an asset.
Experience with 3D CAD software such as SolidWorks, Solid Edge, Creo, or Inventor.
Excellent communication, problem-solving, and technical leadership skills.

Excellent problem-solving, communication, leadership, and stakeholder management skills.
Ability to obtain and maintain nuclear security clearance and access authorization.

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

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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More about this job

Responsibilities

The Senior Mechanical Engineer will lead the design and field execution of complex mechanical systems for nuclear projects, including refurbishment and new-builds. They will provide technical leadership, mentor junior staff, and coordinate with multidisciplinary teams to ensure safe and efficient project delivery.

Requirements

Candidates must hold a Bachelor's degree in Mechanical or Mechatronics Engineering and be a registered Professional Engineer (P.Eng.) in Ontario. The role requires 8-12 years of experience in mechanical design or nuclear projects, along with proficiency in 3D CAD software and strong technical leadership skills.

Skills

Mechanical design
Nuclear engineering
Tooling design
Field service
Project leadership
Machine design
Structural integrity
Hydraulics
Pneumatics
CAD software
Technical specifications
Commissioning
Troubleshooting
Mentoring
Stakeholder management
ASME standards

Benefits

Competitive compensation
Flexible benefits
Employee share plan

Visa sponsorship

Not detected in the job text

Keywords

Mechanical Engineering
Nuclear Projects
Refurbishment
Retube
Field Services
Tooling
Design Engineering
Commissioning
SolidWorks
Solid Edge
Creo
Inventor
ASME
CSA
P.Eng.
Machine Design
Structural Integrity
Hydraulics
Pneumatics
Project Delivery
Technical Leadership
Manufacturing
Outage Execution
Nuclear Security Clearance
Mechanical Systems

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