Description Role SummaryThe Mechanical Maintenance Supervisor leads daily mechanical maintenance activities to ensure work is completed safely, efficiently, and to established quality standards. This role supervises and develops maintenance technicians, coordinates planned and emergency repairs, and supports equipment reliability through preventive, predictive, and corrective maintenance practices.
PurposeMaximize equipment reliability, availability, and uptime in support of plant operations. The Mechanical Maintenance Supervisor works closely with Production, Electrical Maintenance, Reliability, Planning, and Warehouse teams to prioritize maintenance needs, resolve equipment issues, and continuously improve maintenance performance.
Responsibilities - Promote a strong safety culture and ensure compliance with company safety policies, procedures, environmental requirements, and applicable MSHA regulations.
- Conduct pre-shift and weekly safety meetings, field audits, and equipment inspections; support incident investigations and corrective actions.
- Supervise daily mechanical maintenance activities by establishing priorities, assigning work, monitoring progress, and verifying the quality of completed repairs.
- Coordinate with Production, Electrical Maintenance, Reliability, and Planning to prioritize work orders and support plant operating requirements.
- Ensure labor, tools, parts, equipment, manuals, drawings, and other resources are available to complete maintenance work safely and effectively.
- Support job planning through equipment research, parts identification and procurement, cost review, work sequencing, and selection of proper maintenance methods.
- Troubleshoot and coordinate repairs of industrial equipment, including kilns, mills, crushers, conveyors, clinker coolers, gearboxes, pumps, fans, hydraulic systems, and related plant equipment.
- Respond to equipment breakdowns and emergency situations to restore safe, reliable operation and minimize production downtime.
- Promote preventive and predictive maintenance practices, equipment inspections, precision maintenance, and root cause analysis to reduce recurring failures.
- Use the computerized maintenance management system (CMMS) to review, document, track, and close work orders, labor, parts, and maintenance history.
- Coordinate plant shutdown work, contractor activities, and maintenance schedules, including callouts and overtime coverage as needed.
- Monitor critical spare-parts needs and collaborate with Warehouse and Procurement to support material availability and cost-effective purchasing.
- Coach, train, and develop mechanical maintenance personnel while reinforcing teamwork, accountability, quality, and safe work practices.
- Recommend equipment upgrades, modifications, or replacement opportunities that improve reliability, maintainability, efficiency, and lifecycle cost.
- Communicate maintenance status, equipment risks, resource needs, and improvement recommendations to maintenance and plant leadership.
- Perform other duties as assigned.
Knowledge, Skills & Abilities - Strong knowledge of mechanical systems and equipment used in cement, mining, aggregate, or other heavy-industrial operations.
- Practical understanding of bearings, couplings, drives, gearboxes, conveyors, hydraulics, pneumatics, pumps, fans, kilns, mills, crushers, and material-handling systems.
- Knowledge of preventive, predictive, corrective, and precision maintenance practices, including inspection and root cause analysis methods.
- Working knowledge of CMMS applications, work-order management, maintenance planning, parts usage, and maintenance documentation.
- Knowledge of MSHA requirements and industrial safety practices.
- Ability to read and interpret equipment manuals, mechanical drawings, schematics, and technical documentation.
- Strong leadership, coaching, communication, organization, and decision-making skills.
- Ability to prioritize planned work and urgent breakdowns in a fast-paced production environment.
- Ability to collaborate across Maintenance, Production, Electrical, Reliability, Planning, Warehouse, Safety, and Procurement functions.
- Ability to work rotating schedules, nights, weekends, holidays, shutdowns, and on-call coverage as operational needs require.
Work Schedule & On-Call ExpectationsThis position requires on-call availability and may involve late nights, extended workdays, weekends, holidays, shutdowns, and emergency callouts based on operational needs. Candidates should be prepared to respond when urgent maintenance issues arise outside of normal working hours.
Success Profile - Safety-focused, hands-on mechanical maintenance leader with strong technical judgment.
- Builds technician capability through clear direction, coaching, accountability, and respect.
- Responds effectively to equipment failures while maintaining focus on long-term reliability.
- Plans work thoroughly and ensures labor, parts, tools, and technical information are available.
- Uses inspections, preventive and predictive maintenance, and root cause analysis to prevent repeat failures.
- Communicates clearly, collaborates across departments, and follows issues through resolution.
- Demonstrates ownership, adaptability, continuous improvement, and alignment with UNA Values.
Pay RangePosition Mechanical Maintenance Supervisor
Req Number MAI-26-00003
This position is currently accepting applications. 
