Ready Mix Training/Driver Instructor (RMI) | San Antonio, TX Area

Martin Marietta Magnesia Specialties, LLC

New Braunfels, TX


Martin Marietta is looking for SAFE Ready Mix Drivers ready to start a new career with a LEADER in the industry and WORLD CLASS team!

What we offer:

  • Competitive Hourly Pay for Experience with annual performance increases and OT opportunities
  • PTO Available as of DAY ONE
  • Guaranteed to be home every day
  • 401(k) plan with company match
  • Employee Pension Plan (FREE to employees)
  • Full Medical, Health & Wellness Benefits start on FIRST DAY

Position Summary


The Ready Mix Instructor positions reports to the Plant Manager and will be in a role of secondary supervision.  Primary functions are to coordinate Ready Mix driver training and assist with safe and timely Ready Mix deliveries. 

Position located in the San Antonio, TX area with local travel


  • Demonstrates a good working knowledge of Martin Marietta/Ready Mix Rules and Regulations and assures facility compliance with OSHA, DOT, TxDOT, TNRCC, EPA and other regulatory agencies
  • Trains new/existing employees to operate a Ready Mix truck safely and efficiently adhering to The Department of Transportation (DOT) and Martin Marietta rules and regulations
  • Exercises good judgment in identifying and evaluating all Ready Mix operators
  • Develops curriculum required for driver training
  • Selects driver mentors to assist with training
  • Ability to evaluate drivers and personalize training to meet drivers needs
  • Provides instructions on procedures to perform daily preventative maintenance inspections and maintain accurate records on vehicles
  • Required to follow all safety policies and procedures and promote a 24/7 Safe Culture
  • Train in the use of all required safety equipment; including personal/vehicle safety equipment, glasses, hardhat, steel toed shoes/boots, triangles, fire extinguisher, etc.
  • Facilitates, organizes and actively participates in all in-house safety meetings
  • Demonstrates good knowledge of lock out/tag out procedures
  • Assists with maintenance/repairs as needed
  • Ensures all delivery tickets are signed and returned to Martin Marietta/Ready Mix
  • Exercises good judgment and communication regarding job site safety, access, unloading and operation to and from plant
  • Maintains good customer relations on job sites
  • Maintains all DOT required paperwork

Minimum Education and Experience

  • High school diploma or GED equivalent
  • 2 years of experience operating a Ready Mix Truck
  • Possess a Class A or B Commercial Driver’s License (CDL) 
  • Smith System Trainer Certification(Ability to obtain within 6 months)
  • ACI Field Testing Certified(preferred or must be obtained within 120 days from date of hire)

Knowledge, Skills and Abilities

  • Ability to multi-task
  • Proficient with basic computer applications
  • Knowledgeable of concrete fundamentals
  • Ability to maintain composure in pressure situations
  • Excellent customer service skills, internal/external
  • Excellent communication skills
  • Excellent personal safety record
  • Excellent Decision Making and Leadership Skills
  • Excellent organization skills and uses resources effectively and efficiently
  • Positive attitude toward other employees, customers and supervisors
  • Excellent work ethic - punctuality, accuracy and attendance
  • Excellent driving, safety and attendance record

Physical Requirements

  • Ability to climb stairs, climb ladders, reach, squat, tolerate prolonged standing/walking, balance, bend from trunk, crawl, kneel, push and pull objects.
  • Demonstrate neck range of motion within normal limits (flexion and extension 60°, lateral flexion 40 and rotation 70°)
  • Lift objects of various dimensions and weights
  • Ability to operate hand controls with both hands
  • Ability to operate foot pedals with both feet
  • Ability to perform sustained overhead reaching
  • Ability to use vibration tools
  • 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 tolerate working at heights up to 9 feet

Working Conditions


Most time is spent in an air conditioned office environment with occasional outside assignments that may require short periods of work in all weather conditions-heat, cold, wet or dry.  May have exposure to dust, sand, gravel, diesel exhaust, etc.