Senior Plant Maintenance

Martin Marietta Materials, Inc.; Lakeside (CA); On-site; USD 60,000 - 100,000; Full time

Benefits offered by this job

Medical

Dental

Vision

401(k) with company match

Pension

Paid time off

Job summary

Martin Marietta Materials, Inc. seeks a Senior Plant Maintenance Specialist to inspect, maintain, troubleshoot, and repair a broad range of aggregate plant equipment, ensuring safe and efficient operations. You will handle preventive maintenance, diagnostics, and occasional fabrication or welding as needed.

The role emphasizes safety, detailed record-keeping, and collaboration with supervisors and vendors to meet company standards across MSHA/OSHA guidelines. Strong problem-solving is essential.

Qualifications

• High School Diploma, GED, or equivalent; technical training or coursework in maintenance preferred.
• 5+ years related experience in heavy-duty maintenance or related field.
• Strong understanding of safety standards (MSHA/OSHA) and regulatory compliance.

Responsibilities

• Performs preventive maintenance and repairs on plant equipment to minimize downtime.
• Inspects, troubleshoots, and repairs stationary and mechanical systems (conveyors, pumps, gearboxes).
• Maintains maintenance records and coordinates with supervisors and vendors.
• Trains colleagues on best maintenance practices and safety protocols.

Skills

Critical thinking

Problem-solving

Engineering standards

Safety focus

Regulatory compliance

Project Management

Continuous improvement

Oral and written communication

Education

High School Diploma / GED

Job description

The Senior Plant Maintenance Specialist is responsible for inspecting, maintaining, troubleshooting, repairing, and installing a wide range of aggregate plant equipment to ensure safe and efficient operations. This includes stationary and mechanical systems such as conveyors, shakers, pumps, and gearboxes, as well as general facility maintenance involving electrical, plumbing, and basic structural systems. The role performs preventive maintenance, equipment diagnostics, and fabrication or welding work as needed to minimize downtime and improve reliability. The Specialist actively supports safety initiatives, maintains detailed maintenance records, and partners with supervisors and vendors to ensure all repairs and upgrades meet company and regulatory standards.

Key Duties and Responsibilities

• Performs evaluations of plant equipment seeking opportunities to improve availability, capability, and yield
• Studies trends to identify systemic plant maintenance needs
• Actively participates in broad-scale plant maintenance initiatives
• Works with vendors to procure plant maintenance support
• Develops reports on plant capacity and yield and related plant maintenance activities
• Maintains appropriate plant maintenance records information and data in respective technology systems
• Conducts MSHA pre-shift safety inspections of equipment and work areas.
• Prioritizes safety first, followed by quality and production.
• Maximizes performance of stationary equipment by performing timely repairs and completing preventive maintenance according to the Maintenance Module.
• Checks, repairs, and replaces pumps, conveyors, gearboxes, and screens to minimize downtime.
• Operates cranes, man-lifts, welding and cutting tools, and other specialty equipment as needed.
• Performs fabrication, erection, and repair of processing and mobile equipment.
• Ensures maintenance backlog is reviewed and prioritized with the Supervisor and/or Plant Manager.
• Completes all required paperwork to maintain equipment in compliance with Martin Marietta standards.
• Trains and coaches other employees on maintenance best practices.
• 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.

QUALIFICATIONS

Education

High School Diploma, GED, or equivalent experience acceptable; technical training or coursework in maintenance or mechanical systems preferred

Work Experience

5+ years related experience in heavy-duty maintenance or related field, preferably in the aggregates industry.

Knowledge, Skills and Abilities

• Critical thinking
• Problem-solving
• Engineering standards
• Safety focus (MSHA/OSHA)
• Regulatory compliance
• Project Management
• Continuous improvement
• Effective oral and written communication

The hiring range for this position is $30 -$40 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 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; life, AD&D and disability insurance; 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.

Part time employees are eligible to participate in the 401k plan and receive a company match. In addition, they are eligible to start accruing service for the pension plan.

A member of the S&P 500 Index, Martin Marietta is an American-based company and a leading supplier of heavy building materials – including aggregates, cement, ready-mixed concrete and asphalt. Through a network of operations spanning 28 states, Canada and the Bahamas, dedicated Martin Marietta teams supply the foundational resources upon which our communities thrive. Martin Marietta'sMagnesia Specialtiesbusiness produces high-purity magnesia and dolomitic lime products used worldwide in environmental, industrial, agricultural and specialty applications.

At Martin Marietta, we strive to work with the best and the brightest – those who have the potential to become our company's future leaders. Each of our roughly 9,500 people shares a common purpose regardless of our professional role or work environment. Together, we utilize our diverse skills and experiences to drive our company and its extraordinary culture forward. Our aim is to build on our foundation of success and help values-driven and hardworking people realize their full potential. When you decide to invest your career in Martin Marietta, you'll know what it's like to be respected, challenged and rewarded.

In return, we offer a highly competitive benefits package, including:

• Medical
• Prescription Drug
• Vision
• 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
• Business Travel Accident Insurance
• Direct Deposit Payroll
• Educational/Tuition Assistance Plan
• Matching Gift Program
• New Auto Purchase Discount Plans

At Martin Marietta, we are proud to be an Equal Opportunity Employer. We are committed to providing an environment of mutual respect where equal employment opportunities are available to all qualified applicants and teammates. We celebrate diversity and commit that qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.