Mobile Maintenance Supervisor

Sims Metal (Sims) is a global leader in metal recycling. With facilities across the globe, Sims plays an intrinsic role in the circular economy by making resources available for future use. As a responsible corporate citizen, we continuously seek new ways to broaden our participation in the environmental sector, ensuring that our future is as bright, safe, and secure as at any time in our long history.

Job Summary

A Mobile Maintenance Supervisor oversees the repair, servicing, and ongoing preventative maintenance of mobile heavy equipment (such as haul trucks, excavators, loaders, dozers, drill rigs, or fleet vehicles). This role ensures maximum equipment availability, operational efficiency, and safety compliance while leading a shift or team of mobile equipment technicians, mechanics, and field service workers.

Key Responsibilities & Duties

Operational & Field Supervision

• Direct, lead, and schedule daily maintenance tasks and field repair operations for mobile equipment.

• Manage emergency breakdown responses, prioritizing urgent field repairs to minimize operational downtime.

• Interface with operations, dispatch, and planning teams to schedule preventative maintenance (PM) without interrupting production targets.

• Conduct daily shift handovers and perform regular field inspections to ensure repair quality and workspace safety.

Health, Safety & Environmental (HSE)

• Enforce adherence to safety guidelines, company policies, and relevant regulatory standards (e.g., OSHA, MSHA, local environmental laws).

• Lead pre-shift safety meetings (toolbox talks) and conduct Job Hazard Analyses (JHAs).

• Investigate workplace incidents, near-misses, or equipment failures and implement corrective actions.

Asset Management & PM Systems

• Utilize Computerized Maintenance Management Systems (CMMS/ERP like SAP, Maximo, or Fleetio) to manage work orders, track equipment history, and schedule routine servicing.

• Oversee component life cycles, oil sampling/analysis programs, and wear tracking to forecast major overhauls.

• Work with inventory teams to manage spare parts, tool room availability, and vendor/OEM service representatives.

Team Leadership & Development

• Mentor, train, and coach mechanics, technicians, and apprentices in troubleshooting and advanced repair techniques.

• Evaluate team performance, conduct reviews, and manage shift labor allocation.

Typical Qualifications & Requirements

• Education: High school diploma or GED required. An Associate degree or technical diploma in Heavy Equipment Maintenance, Mechanical Engineering, or a related trade field is strongly preferred.

• Certifications:

  • Heavy Duty Equipment Mechanic Journeyperson / Trade Certification (e.g., Red Seal, ASE Heavy Duty Truck/Equipment).

  • Safety Certifications (e.g., OSHA 30, MSHA, First Aid/CPR).

  • Valid Driver’s License (Commercial Driver's License/CDL often required or preferred).

• Experience:

  • 5–10 years of hands-on experience maintaining heavy mobile equipment in mining, construction, transit, or fleet operations.

  • 2+ years of direct supervisory, lead hand, or maintenance planning experience.

A career with Sims provides you with the opportunity to work with an organization whose goal is to be the world’s safest and most responsible recycling company. Our people achieve this by creating a zero-harm workplace, being exemplary members of the communities in which we operate, and being responsible stewards of the environment. We also offer competitive pay and a range of attractive benefits.

Sims is proud to be an equal opportunity employer. We value the diversity of all of our employees and are committed to creating an inclusive working environment where everyone can contribute, advance on merit, and realize their full potential. Sims does not discriminate with regard to race, sex, religion, color, national origin, citizenship status, disability, age, marital or familial status, sexual orientation, gender identity, gender expression, veteran status, housing status, source of income, or any other status protected by federal, state, or local laws. This applies to any employment decision, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.  qualified applicants with a disability in need of a reasonable accommodation may request such without fear of reprisal or discrimination. 

To achieve our purpose to create a world without waste to preserve our planet, we are guided by our Principles of Purpose: Be Safe + Well, Band Together, Be Accountable + Transparent, Consistently Innovate, Inspire with Purpose, Celebrate + Have Fun.