Maintenance Mechanic Millwright

AtkinsRéalis; Mississauga; On-site; CAD 91,200 - 114,000; Full time

Benefits offered by this job

Hybrid work culture

Competitive compensation

Training & development opportunities

Job summary

AtkinsRéalis in Mississauga, Ontario, is seeking a Maintenance Mechanic (Red Seal Millwright) to maintain critical power generation and utility plant systems in a 24/7 environment.

You will perform preventive and corrective maintenance, troubleshoot rotating equipment, and ensure safety and reliability. The role requires 5+ years of industrial experience and a valid 433A certificate, with on-site work and potential overtime.

Qualifications

• 5+ years of industrial maintenance experience in heavy industrial, utility, or power generation environments.
• Ability to read P&IDs, mechanical drawings and OEM documentation.
• Proficient in using CMMS to enter work records and maintain equipment history.
• Knowledge of rotating equipment, bearings, lubrication, seals, pumps and compressors.
• Willingness to work on-site in a 24/7 critical infrastructure environment and to perform physically demanding tasks.

Responsibilities

• Perform preventive, predictive, corrective, and emergency maintenance on power generation and utility plant equipment.
• Troubleshoot mechanical equipment failures using schematics, OEM manuals, and diagnostic tools.
• Repair, overhaul, align, install, commission, and recommission rotating and stationary equipment.
• Execute condition‑based maintenance using vibration analysis, ultrasound, laser alignment, and lubrication best practices.
• Support root cause analysis investigations and implement corrective actions.
• Maintain accurate maintenance records, work orders, inspection reports, and equipment history in CMMS.
• Adhere to safety procedures, regulatory requirements, and emergency response protocols.

Skills

Rotating equipment maintenance

Mechanical troubleshooting

Reading P&IDs & drawings

CMMS data entry

Physical stamina

Education

Ontario Industrial Mechanic Certificate 433A

Red Seal Endorsement preferred

Job description

Overview

Join AtkinsRéalis and play a critical role in maintaining the infrastructure that supports essential airport operations. As a Maintenance Mechanic (Red Seal Millwright), you will be part of a team responsible for the safe, reliable, and efficient operation of power generation and utility plant systems. This is an exciting opportunity to contribute to critical infrastructure, apply advanced mechanical maintenance expertise, and support innovation and operational excellence within a dynamic engineering environment.

Your Role

• Perform preventive, predictive, corrective, and emergency maintenance on power generation and utility plant equipment.
• Troubleshoot mechanical equipment failures using technical drawings, schematics, OEM manuals, and diagnostic tools.
• Repair, overhaul, align, install, commission, and recommission rotating and stationary equipment.
• Execute condition‑based maintenance activities using vibration analysis, ultrasound technology, laser alignment, precision measurement, and lubrication best practices.
• Support root cause analysis investigations and implement corrective actions to improve equipment reliability and performance.
• Maintain accurate maintenance records, work orders, inspection reports, and equipment history within the CMMS.
• Adhere to safety procedures, regulatory requirements, emergency response protocols, and critical utility operational standards.

About You

• Red Seal Endorsement is preferred/strongly desirable for interprovincial trade recognition.
• Valid Ontario Industrial Mechanic (Millwright) Certificate of Qualification, 433A.
• Minimum 5 years of industrial maintenance experience in a heavy industrial, utility, or power generation environment.
• Strong knowledge of rotating equipment maintenance, precision alignment, bearings, lubrication systems, mechanical seals, pumps, compressors, hydraulic systems, and pneumatic systems.
• Ability to read and interpret P&IDs, mechanical drawings, technical manuals, OEM documentation, and engineering specifications.
• Computer proficiency to enter work records, review documentation, and use CMMS tools.
• This position is based on‑site within a 24/7 critical infrastructure environment and may require rotating shifts, overtime, participation in scheduled outages, and on‑call availability. Work is performed in industrial utility settings and may involve exposure to heights, confined spaces, elevated temperatures, noise, and mechanical hazards. The role requires the ability to lift up to 50lbs and perform physically demanding tasks. Successful candidates must obtain and maintain airport security clearance and comply with all site access and security requirements.

Rewards & Benefits

Enjoy competitive compensation, employee recognition, and a 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.

Expected compensation for this role is between $91,200 - $114,000 annually. Base salaries are determined according to several parameters like skills, experience, and potential impact on the role. Internal and external competitiveness are also taken into account in our offers.

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.