Senior Plant Maintenance

Martin Marietta•Phoenix, AZ

4d•Onsite

About The Position

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.

Requirements

High School Diploma, GED, or equivalent experience acceptable
5+ years related experience in heavy-duty maintenance or related field, preferably in the aggregates industry.
Critical thinking
Problem-solving
Engineering standards
Safety focus (MSHA/OSHA)
Regulatory compliance
Project Management
Continuous improvement
Effective oral and written communication

Nice To Haves

technical training or coursework in maintenance or mechanical systems preferred

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.
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.