Underground HD Mechanic / Maintenance Supervisor

Default Brand; Canada; On-site; CAD 90,000 - 120,000; Full time

Benefits offered by this job

Competitive compensation

Mentorship & development

Underground mining experience

Engineering designation pathway

Job summary

Thyssen Mining is seeking an experienced Underground Heavy Duty Mechanic / Maintenance Supervisor to oversee and perform maintenance, troubleshooting, and repair of underground equipment. This role blends hands-on mechanical work with leadership to ensure safety, reliability, and high equipment availability.

Key responsibilities include supervising daily activities, coordinating parts and resources, and mentoring maintenance staff to uphold manufacturer standards and site safety policies.

Qualifications

• Trade certification required for Heavy Duty Mechanic.
• Experience maintaining underground mining equipment.
• Supervisory or crew-leading experience preferred.

Responsibilities

• Supervise and coordinate daily underground maintenance activities.
• Diagnose, troubleshoot, repair, and maintain underground equipment.
• Lead preventative maintenance programs and schedules.
• Respond to equipment breakdowns and complex issues.
• Coordinate resources based on priorities.
• Monitor availability, downtime, and recurring issues.
• Maintain maintenance records and work orders.

Skills

Heavy equipment maintenance

Leadership

Troubleshooting

Maintenance planning

Education

Heavy Duty Mechanic trade certification

Tools

Diagnostic tools

Maintenance software

Job description

Job Details

Posting Details

• Posted on November 4, 2026

Locations

Showing 1 location Ontario, CAN

• Maintenance
• Full-Time
• Requisition #: UNDER001327

Description

Thyssen Mining is seeking an experienced Underground Heavy Duty Mechanic / Maintenance Supervisor to oversee and perform maintenance, troubleshooting, and repair of underground mobile and fixed equipment. This position combines hands‑on mechanical expertise with leadership responsibilities to ensure equipment safety, reliability, and availability.

Key Responsibilities:

• Supervise and coordinate daily underground maintenance activities.
• Diagnose, troubleshoot, repair, and maintain underground mobile and fixed equipment.
• Lead and support preventative and scheduled maintenance programs.
• Respond to equipment breakdowns and complex mechanical issues.
• Coordinate mechanics, equipment, parts, and resources based on operational priorities.
• Monitor equipment availability, utilization, downtime, and recurring maintenance issues.
• Ensure timely availability of parts and materials required for repairs.
• Provide leadership, coaching, and technical support to maintenance personnel.
• Inspect completed work to ensure quality, safety, and manufacturer standards.
• Maintain accurate maintenance records, work orders, and equipment documentation.
• Work closely with Operations, Planning, and other departments to minimize downtime.
• Ensure all work complies with Thyssen Mining and site‑specific safety requirements.

Qualifications:

• Heavy Duty Mechanic trade certification or equivalent required.
• Extensive experience maintaining and repairing underground mining equipment.
• Previous supervisory or crew‑lead experience preferred.
• Strong mechanical, hydraulic, electrical, and diagnostic troubleshooting abilities.
• Experience with preventative maintenance programs and maintenance planning.
• Experience using diagnostic tools and maintenance software.
• Strong leadership, communication, and problem‑solving skills.
• Valid driver's license.
• Applicable underground certifications and site training.

What We Offer:

• Competitive compensation package.
• Mentorship and professional development opportunities.
• Exposure to underground mining projects across North America.
• Opportunity to build experience toward professional engineering designation.

Thyssen Mining is an equal opportunity employer committed to creating an inclusive workplace.