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Martin Marietta Maintenance - Mechanic/Welder - NIGHT SHIFT - Beckmann Quarry - San Antonio, TX in San Antonio, Texas

Recently ranked at #72 on Fortune magazine’s list of the 100 Fastest-Growing Companies in the world, Martin Marietta, a member of the S&P 500 Index, employs more than 8,500 employees at operations spanning 27 states, Canada and the Bahamas. A leading supplier of aggregates and heavy building materials, dedicated teams at Martin Marietta supply the resources for the roads, sidewalks and foundations on which we live.

At Martin Marietta, we are always looking for the best and the brightest, for people who have the potential to be the Company's future leaders. We are building on our foundation of success by selecting the finest people and helping them realize their potential. When you decide to build your career at Martin Marietta, you'll know what it's like to be respected, challenged and rewarded.


Plant maintenance/mechanic position is responsible for inspecting and diagnosing issues with machinery and performing preventative maintenance/repair of aggregate plant processing equipment including but not limited to stationary machinery and mechanical equipment such as conveyor systems, shakers, pumps, gearboxes, etc. As a plant maintenance/welder you may perform various roles, including fabrication, welding, cutting and/or grinding, greasing, housekeeping and other various shop or processing duties. Operates cranes, man-lifts, hoists pneumatic, hand tools, power tools, cutting torches, welding equipment, and other specialty service equipment as needed. May order parts through maintenance department or outside suppliers. This is a night shift position.


  • Will take an active role in the plant safety initiatives

  • Ensures a safe work environment for self and others at all times

  • Maximizes performance of stationary equipment by performing repairs and ensuring preventative maintenance is completed on a timely basis

  • Responsible for ensuring backlog process is completed and prioritized with Supervisor and/or Plant Manager

  • Completes required paperwork to maintain equipment and to run the plant according to Martin Marietta standards

  • Inspects and ensures maintenance truck is being maintained properly along with good housekeeping

  • Prioritizes SAFETY, then QUALITY, followed by Production

  • Conducts MSHA pre-shift safety inspections of equipment and work areas

  • Maximizes performance of stationary equipment by performing repairs and ensuring preventative maintenance is completed on a timely basis

  • Duties include checking, repairing or replacing pumps

  • Ensures Preventative Maintenance services, lubrications services are completed according to Maintenance Module.

  • Trains and coaches other employees on maintenance practices


  • 1 to 3 years+ experience related to heavy duty maintenance job or equivalent combination of training and experience, preferably in aggregates industry

  • High School Diploma, GED, or equivalent experience preferred


  • Must be able to perform duties in a safe manner

  • Ability to read and write and communicate effectively

  • Must be able to communicate over two-way radio or with hand signals and warning sounds, with coworkers regarding movement of vehicles and mobile equipment

  • Self-starter with ability to work with little or no supervision

  • Strong mechanical knowledge

  • Ability to handle multiple projects simultaneously

  • Ability to work with little to no supervision

  • Demonstrated proficiency with oxy/acetylene torch and stick welding, MIG a plus

  • Must be able to identify and order basic parts (bearings, idlers, screens, pulleys)

  • Must be able to field lay out and fabricate in steel

  • This job requires the ability to wear a hard hat, safety glasses or goggles, steel-toed boots, hearing protection, safety reflective vest, full body harness, welding hood

  • Must be able to work 8-12 hour(+) shifts, weekends, overtime, and holidays as needed

  • Ability to troubleshoot, repair and maintain all plant equipment

  • Proficiency with a wide variety of hand tools and power tools

  • Ability to work in outdoor environment and in elevated areas


  • Ability to climb stairs, climb ladders, reach, stoop, squat, tolerate prolonged standing/walking, balance, bend, twist, crawl, kneel, push and pull objects

  • Ability to operate hand controls with both hands

  • Ability to operate mobile equipment, foot pedals with both feet

  • Ability to perform sustained overhead reaching

  • Ability to tolerate working outdoors in all environmental temperatures and weather

  • Ability to work in areas with the potential for high noise levels

  • Ability to work in cramped quarters

  • Lift objects of various dimensions and weights

  • Lift up to 50 lbs, carry up to 150 ft.

  • Ability to tolerate working at heights up to 100 feet

  • Vision: Normal depth perception, vision and ability to distinguish color


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


The above statements are intended to describe the general nature and level of work being performed by people assigned to this classification. They are not to be construed as an exhaustive list of all responsibilities, duties, and skills required of personnel so classified. All personnel may be required to perform duties outside of their normal responsibilities from time to time, as needed.

  • 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

  • Sickness and Accident – Short-Term Disability

  • Optional Long-Term Disability

  • 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

We are an equal opportunity employer.

Qualified minorities, women, veterans and individuals with disabilities are encouraged to apply.

Requisition ID: 2020-6879

Division: Southwest Division

External Company Name: Martin Marietta, Inc.

External Company URL:

Street: 18495 NW Military Hwy