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AspiringIT

Sr. Mechanical Engineer – Nuclear energy

Oshawa, ON, Canada

Full-time

Within 25 km of Ajax · About 16.8 km from the city centre

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Job details

Job type: Full-time
Apply by: Nov 19, 2026
Experience: 6+ years of experience, ideally in nuclear or power generation
Posted: Oct 20, 2026

Original job description

Job Title: Sr. Mechanical Engineer

Location: Oshawa, ON (Hybrid)

Employment Type: Full-Time / Contract

Job Summary

AspiringIT is hiring a Senior Mechanical Engineer for a leading nuclear engineering services client supporting Ontario's CANDU fleet.

What you'll do

Lead mechanical design and engineering change packages for station systems and components

Work on pressure-boundary equipment: piping, valves, pumps, heat exchangers, pressure vessels

Prepare specifications, design calculations and stress/qualification reviews

Support fabrication, field installation and site issue resolution

Mentor and verify the work of junior engineers

What you bring

Bachelor's in Mechanical Engineering

6+ years of experience, ideally in nuclear or power generation

P.Eng (PEO)

CANDU design and engineering change experience

Working knowledge of CSA N285.0, ASME Section III and CSA N286

CAD/FEA tools (e.g., AutoCAD, SolidWorks, ANSYS)

Nice to have

Ontario refurbishment project experience

CSA N299 supplier quality

Welding and NDE knowledge

Must be eligible for nuclear site security clearance and export-control requirement

Apply About employer

More about this job

Responsibilities

Lead mechanical design and engineering change packages for nuclear station systems and pressure-boundary components, including preparing specifications, calculations, and stress or qualification reviews. Support fabrication, field installation, and site issue resolution, while mentoring and verifying the work of junior engineers.

Requirements

Requires a bachelor's degree in Mechanical Engineering, at least six years of experience, a P.Eng. license through PEO, and CANDU design and engineering change experience. Candidates should know CSA N285.0, ASME Section III, and CSA N286, and be familiar with CAD/FEA tools; nuclear site security clearance and export-control eligibility are also required.

Skills

Mechanical Design
Engineering Change Packages
Pressure-Boundary Equipment
Piping
Valves
Pumps
Heat Exchangers
Pressure Vessels
Design Calculations
Stress Analysis
Fabrication Support
Field Installation
CANDU Engineering
CSA N285.0
ASME Section III
CSA N286

Visa sponsorship

Not detected in the job text

Keywords

Mechanical Engineering
Nuclear Energy
CANDU
Engineering Change Packages
Pressure-Boundary Equipment
Piping
Valves
Pumps
Heat Exchangers
Pressure Vessels
Design Specifications
Design Calculations
Stress Analysis
Qualification Reviews
CSA N285.0
ASME Section III
CSA N286
AutoCAD
SolidWorks
ANSYS
CSA N299
Supplier Quality
Welding
Nondestructive Examination
Fabrication
Field Installation
P.Eng. (PEO)
Nuclear Site Security Clearance
Export Control

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