Martin Marietta

Maintenance Supervisor

Martin Marietta • $93K — $125K *
Manufacturing & Automotive
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • High school diploma, GED, or relevant experience
  • 4+ years in Heavy Industrial Maintenance (Aggregates, Mining, or Construction preferred)
  • Knowledge of production processes and quality control methods
  • Familiarity with MSHA regulations and compliance
  • Strong critical thinking and problem-solving skills
  • Effective communication skills, both written and spoken
  • Understanding of EPA regulations and resource management

Responsibilities

  • Conduct daily MSHA pre-shift inspections to identify hazards
  • Develop and execute maintenance schedules in coordination with the Plant Manager
  • Oversee repair and optimization of stationary and mobile equipment
  • Mentor junior technicians on safe maintenance practices
  • Plan and staff maintenance crew for a 4MTPY hard rock quarry
  • Monitor plant operations to ensure production and quality standards
  • Manage inventory levels of parts needed for maintenance

Benefits

  • Medical, dental, and vision coverage
  • Prescription drug coverage
  • 401(k) with company matching
  • Employer-funded pension plan
  • Paid time off and holidays
  • Educational/tuition assistance
  • Wellness programs
Full Job Description
Description

JOB SUMMARY

The Maintenance Supervisor at Martin Marietta is a critical leadership role responsible for the end-to-end health of plant assets and the safety of the maintenance team. Acting as a 'Guardian Angel' for their crew, the Supervisor ensures that all stationary and mobile equipment-including crushers, conveyors, screens, and pumps-is maintained to maximize uptime and operational efficiency.

The Maintenance Supervisor will coordinate repair and maintenance activities at Martin Marietta's Walstrum Quarry in Idaho Springs, CO. This position will interact with all plant personnel to achieve the highest levels of safety, production, efficiency, and housekeeping while meeting goals outlined in the business and profit plans.

This role balances technical expertise with people management, focusing on initiative-taking preventive maintenance (PM) strategies and rapid response to mechanical failures. The successful candidate will foster a culture of Safety First, Quality Second, and Production Third, ensuring that every team member returns home safely every day while meeting the company's rigorous production goals.

KEY DUTIES AND RESPONSIBILITIES
  • Conduct daily MSHA pre-shift inspections of equipment and work areas to identify and mitigate hazards.
  • Develop and execute daily and weekly maintenance schedules, prioritizing the maintenance backlog in coordination with the Plant Manager.
  • Oversee the repair and optimization of stationary equipment (conveyors, shakers, gearboxes) and mobile fleet assets.
  • Mentor junior technicians on safe maintenance practices, including Lock-Out/Tag-Out/Try-Out (LOTOTO).
  • Overall responsibility for planning and staffing maintenance crew for a 4MTPY hard rock quarry.
  • Assist Management in the scheduling and timing of repairs to all equipment at the site.
  • Monitor plant operations daily to ensure production and QC standards are maintained. Take corrective action when deficiencies occur.
  • Monitoring and reporting on safety and production KPIs.
  • Ensure personnel comply with Federal, State and Company safety and environmental rules and regulations through daily inspections of site, plant machinery, equipment, personal activities and working conditions.
  • Develop and nurture empowered/self-directed work teams in all phases of the operation.
  • Purchase or direct the purchase of supplies and equipment in accordance with Martin Marietta's Controllers policies - recommend vendors to reduce costs.
  • Coordinate staffing with the Plant Manager and Assistant Plant Manager to operate the plant and coordinate the same needs with labor law compliance and affirmative action with the Human Resource Department, properly and safely.
  • Supervisory responsibility involving staffing, performance appraisals, training and development, promotions, salary increases, discipline, and motivating staff.
  • Assist in the development of the annual human resources business plan and ensure continual development of employees through training, cross-training and other development tools.
  • Manage proper inventory levels of parts needed to maintain target uptime. Inventories include but not limited to screen panels, GET, wear metal, bearings, misc. consumables such as welding rod and torching supplies.
  • Maintain operation security.

QUALIFICATIONS

Education
  • High school diploma, GED, or relevant experience

Work Experience
  • 4+ years in related Heavy Industrial Maintenance (Aggregates, Mining, or Construction preferred).

Knowledge, Skills, and Abilities
  • Production process and methods
  • Quality Control methods
  • MSHA regulations and compliance
  • Critical thinking
  • Problem-solving
  • EPA
  • Resource management
  • Effective communicator (written and spoken)

ADDITIONAL DETAILS

Physical Requirements

Must be able to lift and carry up to 50 lbs. for plant maintenance and equipment servicing.

Required to bend, stoop, climb, and reach. You must be able to maintain three points of contact when climbing on/off machinery or on ladders.

Strong hand-eye-foot coordination is essential for operating hand/foot controls. You must have good depth perception with or without seeing aid for distances up to 150 feet.

Working Conditions

All duties require outside assignments and periods of work in all weather conditions, cold, wet, dry and dusty. Must be able to work in areas where noise levels are up to 85 dbs

Disclaimers

In addition to the primary responsibilities outlined, the successful candidate may be expected to take on other tasks and assignments as required, including but not limited to duties outside the typical scope of the role to support overall team operations and organizational needs. Flexibility and adaptability to evolving job demands are essential.

COMPENSATION

The hiring range for this position is $93,000 -$125,000 exclusive of benefits or bonuses (discretionary and non-discretionary). The offered base compensation will be determined based on factors such as geographic location, business need, market conditions, proficiencies, skills, education, and experience. Additionally, at Martin Marietta we place a high value on internal pay equity and will consider the compensation for those in similarly situated roles and direct team members. The hiring range for this role represents the base compensation we expect to pay for the position at time of hire and does not represent the total possible base pay of the position. In addition, this role is eligible for our annual bonus program. Bonuses awarded under this program are determined based on the performance of the organization and the employee.

In addition to our base compensation, we also offer a competitive benefits package for full-time employees, including medical, dental and vision coverage; prescription drug coverage; health savings accounts; flexible spending accounts; and life, AD&D and disability insurance. We also encourage our employees to plan for the future by offering a 401(k) with a company match and an employer-funded defined benefit pension plan. Other benefits include paid time off, paid holidays, education/tuition assistance, an employee discount program, adoption assistance, wellness programs and more.

In return, we offer a highly competitive benefits package, including:
  • Medical
  • Prescription Drug
  • Dental
  • Vision
  • Health Care Reimbursement Account
  • Dependent Care Reimbursement Account
  • Wellness Programs
  • Employee Assistance Plan
  • Paid Holidays and Vacation
  • 401(k) with Company matching
  • Pension
  • Salary Continuation - Short-Term Disability
  • Long-Term Disability Options
  • Employee Life Insurance
  • Spouse & Dependent Life Insurance
  • Business Travel Accident Insurance
  • Direct Deposit Payroll
  • Educational/Tuition Assistance Plan
  • College Scholarship Program - for dependent children
  • Matching Gift Program
  • New Auto Purchase Discount Plans

About Martin Marietta

Martin Marietta is a leading supplier of construction materials, including aggregates, cement, ready mixed concrete, and asphalt. The company operates in 27 states and has over 400 facilities, serving customers in the construction, energy, and transportation industries. Martin Marietta is headquartered in Raleigh, North Carolina and was founded in 1993 through the merger of Martin Marietta Materials and the American Materials Company. The company has a strong commitment to sustainability and is focused on reducing its environmental impact through the use of alternative fuels and other initiatives. Martin Marietta is listed on the New York Stock Exchange under the ticker symbol MLM.
Learn more about Martin Marietta
Size
8,000 employees
Market Cap
$21.2 billion
Industry
Net Income
$720.8 million
5 Year Trend
+6%
Revenue
$4.7 billion

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