Dumas Contracting Ltd.
Leading full‑service underground mining contractor in the Americas, offering construction, development, production and engineering services
2 days ago
Intermediate (4-7 years), Experienced (8-12 years)
Full Time
Canada
Field
Company Size
8,000 Employees
Service Specialisms
Sector Specialisms
Description
electrical installation
fault diagnosis
high voltage
schematics update
preventive maintenance
code compliance
As a Master Electrician at Dumas, you will oversee and execute electrical installations, maintenance, and troubleshooting for both surface and underground mining infrastructure. You will ensure that power distribution, motor control centers, switchgear, hoisting systems, communications, and processing plant equipment operate safely, efficiently, and in compliance with regulatory and site‑specific requirements. This senior position also provides technical leadership, mentoring, and quality assurance for all electrical work on site.
The role requires installing, maintaining, inspecting, and repairing a wide range of electrical systems across mine sites, as well as diagnosing complex failures and implementing corrective actions. You will work safely with high‑voltage and low‑voltage equipment, interpret and update schematics and technical documentation, and enforce grounding, bonding, and energy‑isolation procedures. Collaboration with engineering, operations, and maintenance teams is essential to support production goals and project planning.
- Install, maintain, inspect, and repair surface and underground power distribution, MCCs, VFDs, transformers, and switchgear.
- Diagnose and resolve failures in complex electrical systems and equipment.
- Perform high‑voltage and low‑voltage work in accordance with regulatory standards.
- Interpret, update, and maintain electrical schematics, blueprints, and single‑line diagrams.
- Enforce proper grounding, bonding, and lock‑out/tag‑out (LOTO) procedures.
- Mentor and support electrical apprentices and journeypersons.
- Conduct routine inspections, preventive maintenance, and system testing with detailed reporting.
- Collaborate with engineering, operations, and maintenance teams to meet production goals.
- Verify compliance with Dumas standards, mine regulations, and applicable electrical codes.
- Participate in hazard assessments, safety meetings, and continuous‑improvement initiatives.
Requirements
master electrician
underground core
5-7 years
canadian code
diagnostics
leadership
Candidates must hold a valid Master Electrician certification in Ontario (or equivalent) and possess the Basic Underground Common Core credential. A minimum of five to seven years of industrial or mining electrical experience, strong knowledge of the Canadian Electrical Code and mining regulations, and proficiency with diagnostics, control systems, and motor‑control technology are required. Leadership, mentoring ability, and an excellent safety record are also essential.
To apply, submit your resume through the Dumas website and include your transcripts via the “Add Portfolio” button. Applicants must be Canadian citizens or have written authorization to work in Canada and be residing in Canada at the time of application.
Dumas is committed to a barrier‑free hiring process and will provide reasonable accommodations when requested. Only candidates selected for an interview will be contacted, and the company does not use artificial intelligence for screening.
- Valid Master Electrician Certification in Ontario (or equivalent provincial designation).
- Basic Underground Common Core certification.
- 5–7 years of industrial or mining electrical experience, including high‑voltage distribution and fixed plant systems.
- Strong knowledge of the Canadian Electrical Code and mining electrical regulations.
- Proficiency with diagnostics, instrumentation, control systems, and motor‑control technology.
- Experience with hoisting systems, processing plants, or underground distribution assets.
- Demonstrated leadership, mentoring, and communication skills.
- Proven excellent safety record and commitment to safe work practices.
- Strong health‑and‑safety commitment.
Benefits
Dumas offers a variety of site‑specific schedules and a competitive wage complemented by a comprehensive benefits and retirement package. Meal and travel allowances, as well as accommodations for out‑of‑town workers, are provided. Compensation is designed to reward performance and support a healthy work‑life balance.
Why Dumas? The company provides performance‑based financial rewards, a strong commitment to health and safety, extensive training and career‑development opportunities, and the chance to work on global projects. Employees benefit from a supportive environment that values continuous improvement.
- Competitive wage with performance‑based financial rewards.
- Comprehensive benefits and retirement package.
- Meal and travel allowances.
- Accommodations for out‑of‑town workers.
- Training, career development, and global opportunity programs.
Training + Development
Interview process
Visa Sponsorship
- must be a canadian citizen or authorized in writing to work in canada under federal immigration requirements.
Security clearance
Overview
1994-founded
Year Established
The company was founded in 1994 as a boutique French-Canadian underground mining contractor.
>500 projects
Total Projects Completed
Over 500 projects have been completed across 10 countries for more than 40 clients.
10 countries
Geographic Reach
The company has completed projects in 10 different countries across the Americas.
40+ Clients
Client Relationships
The company has served more than 40 clients, including major mining operations in Canada, Mexico, and Central America.
- Evolved into a full-service firm handling underground mine construction, development, production, and engineering
- Secured a notable five-year underground development and production contract at SilverCrest’s Las Chispas mine in Mexico
- Capabilities include shaft sinking, lateral and vertical development, hoisting systems, and full mine infrastructure delivery
- Backed by STRACON Group since 2018, combining open-pit and underground mining expertise under one roof
- Noteworthy for handling complex shaft-sinking projects in challenging ground conditions and extreme depths
Culture + Values
- Valuing employees, health & safety, the environment, and communities, fostering pride among team members.
- Thinking like a client, being proactive, delivering on commitments, making clients successful, adding value, and keeping clients informed.
- Improving, renewing, creating, and developing to be better tomorrow, both as individuals and as a company.
- Emphasizing teamwork, setting team objectives, and celebrating team success.
- Being action and results oriented, developing expertise, following the plan-execute-improve cycle, and sharing best practices.
Environment + Sustainability
Triple-Zero Safety
Zero incidents, zero injuries, zero lost-time
Celebrated one year of continuous safety performance at the Kidd Mine team as of June 3, 2024.
- Support clients in achieving their own sustainability business goals via technology, innovation, and operational excellence in underground mining services.
- Participate responsibly across the mining value chain to contribute to an improved environment and better planet overall.
- Published 2023 Sustainability Report and 2023 Data Book (available on company website).
- Emphasis on safety innovation, operational excellence, and cost controls as part of sustainability approach.