Operations Supervisor: Ready-Mix & Aggregates

Hawaiian Cement; Kahului (HI); On-site; USD 70,000 - 100,000; Full time

Job summary

Hawaiian Cement in Kahului, HI, seeks a results-oriented plant supervisor to lead Ready-Mix and Aggregate operations. You will oversee production schedules, dispatch, maintenance, safety, and customer service, ensuring timely, quality delivery and cost efficiency.

The role requires strong leadership, communication, and problem-solving skills, with experience in industrial operations and union environments. Candidates must maintain certifications and drive standards.

Qualifications

• High School Diploma or GED required.
• Minimum two (2) years of leadership or supervisory experience.
• Valid Hawaii Driver's License (Class 3 or higher) with acceptable driving record.
• Basic computer proficiency, including Microsoft Office applications.
• Ability to obtain required operational certifications and qualifications.
• Ability to pass drug screening, background check, driver abstract review, and maintain TWIC credentials.
• Must successfully complete required physical capacity testing.

Responsibilities

• Supervises ready-mix production, dispatch coordination, transportation operations, fleet utilization, delivery performance, and customer service activities to ensure customers receive quality products safely, efficiently, and on schedule.
• Coordinates production schedules, plant maintenance, equipment availability, repair priorities, housekeeping activities, and operational resources to maximize productivity, service performance, and profitability.
• Works closely with Quality Control, Sales, and Maintenance personnel to achieve safety, quality, customer service, and financial objectives.
• Monitors key performance indicators including safety performance, delivery efficiency, fleet utilization, labor productivity, equipment availability, operational costs, and customer satisfaction.
• Ensures employees are properly trained, qualified, and operating safely while performing Dispatcher and Batch Plant Operator duties in accordance with union agreements and established past practices.
• Maintains compliance with all applicable OSHA, DOT, FMCSA, EPA, State, and Company safety, environmental, quality, and operational requirements.
• Supervises the daily operation of the Portable Plant, Finish Plant, and Waikapu Quarry, including quarry development, harvesting, blasting, crushing, screening, processing, inventory management, and aggregate production activities.
• Coordinates production schedules, equipment utilization, maintenance priorities, plant relocations, repair activities, and operational resources to maximize production efficiency, product quality, equipment availability, and overall departmental performance.
• Monitors key performance indicators, inventory levels, production results, and quality standards to ensure operational objectives are achieved.
• Ensures employees are properly trained, qualified, and operating safely while performing bargaining unit work in accordance with union agreements and established past practices.
• Maintains compliance with all applicable MSHA, EPA, State, and Company safety, environmental, and operational requirements.
• Promote Company Purpose, Mission, Vision, Values, and TRAC principles.
• Lead employees to achieve safety, quality, production, customer service, and financial goals.
• Monitors productivity, equipment utilization, labor efficiency, and department KPIs.
• Coordinate maintenance activities, equipment repairs, contractor services, and operational resources.
• Conducts workplace inspections to identify hazards and maintain compliance.
• Investigates incidents and operational issues, implementing corrective actions as necessary.
• Lead, coach, and develop employees
• Administer bargaining unit provisions, address grievances, and support labor-management initiatives.
• Build positive relationships with internal and external stakeholders
• Execute continuous improvement and Lean Six Sigma initiatives.
• Respond to emergencies, weather events, production interruptions, and operational challenges.
• Maintain positive customer relations and support efficient, profitable operations.

Skills

Leadership

Communication

Coaching

Team-building

Safety awareness

MS Office

Education

High School Diploma or GED

Associate degree / trade certification (preferred)

Tools

NRMCA Plant Manager Certification

Microsoft Office

Job description

Hawaiian Cement in Kahului, HI, seeks a results-oriented plant supervisor to lead Ready-Mix and Aggregate operations. You will oversee production schedules, dispatch, maintenance, safety, and customer service, ensuring timely, quality delivery and cost efficiency.

The role requires strong leadership, communication, and problem-solving skills, with experience in industrial operations and union environments. Candidates must maintain certifications and drive standards.