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Maintenance Mechanic III

The Doe Run Company
Boss, MO Full Time
POSTED ON 9/9/2026
AVAILABLE BEFORE 11/9/2026

We are Doe Run – producing metals and recycling batteries for a clean energy future.
Starting pay is $33.49/hour
5% targeted monthly bonus.
Insurance benefits start day 1.
80 hours of vacation after 90 days.
On-the-job training with career growth opportunities.

The Doe Run Company is seeking a Maintenance Mechanic lll to maintain Doe Run Company equipment in order to ensure process safety and minimize division downtime. The position is located at our Buick Resource Recycling Division in Boss, MO. 

Job Responsibilities:

  • Troubleshoot equipment problems.
  • Provide scheduled maintenance and repairs.  
  • Work with Level I and II Maintenance personnel to provide effective, timely, and efficient repair and maintenance service.  
  • Assist in the installation of new equipment and the modification of existing equipment. 
  • Assist in plant upgrade installations to improve production and efficiency of the plant. 
  • Manage storage area, shipments, and relocation of waste containers from Satellite Accumulation Areas to Hazardous Waste Storage Areas. 
  • Complete tasks in a safe and environmentally compliant manner by following EHS (environmental, health, and safety) policies, procedures, and best practices; support and assist peers in working in a safe, compliant manner; report unsafe acts or conditions, incidents, and deviations; and provide feedback to support continuous improvement in EHS performance. 
  • Other duties as assigned. 

Education & Experience:

  • High school diploma or equivalent, preferred.
  • Completion of level II of the Doe Run maintenance training program.
  • If no high school diploma or equivalent, a minimum of four years of experience in a mechanical maintenance role or technical training and a minimum of four years of technical experience.  
  • Must complete Doe Run Company maintenance training program or equivalent and pass a Level III Maintenance Assessment Test.  
  • Valid driver’s license.  

Knowledge, Skills & Abilities:

  • Basic Knowledge of divisional operations (i.e., mining, milling, smelting).
  • Excellent mechanical skills. 
  •  Ability to operate mobile equipment, including cranes, forklifts, skid steer, loaders, etc. 
  • Working knowledge of metal fabrication, hydraulics/pneumatics, refractory work, bearings/seals, welding, pipe fitting, pump repair, mechanical repairs, and construction maintenance.
  • Basic computer skills, including knowledge of Microsoft Office programs, I-Series, AS400/PeopleSoft, preferred. 
  • Ability to read and draw schematics/blueprints.
  • Demonstrated skill in using small hand tools, advanced measuring, and basic mathematical calculations.

Work Environment, Physical & Lifting Requirements:

  • Regularly required to wear personal protective equipment, including, but not limited to, a respirator, hearing protection and eyewear, and exposed to outdoor weather conditions. Frequently works near moving mechanical parts and is exposed to wet, humid conditions, vibration, loud noises, and extreme heat. Occasionally works in confined spaces and/or at heights of four feet or more, with fall protection.  
  • Regularly requires hearing and reaching with hands/arms. Frequently requires talking, feeling attributes of objects, grasping, pushing, standing, walking, and repetitive movement. Occasionally requires sitting, driving, stooping, kneeling, crouching, crawling, and climbing or balancing. Requires clarity of vision at 20 feet or more and 20 inches or less, three-dimensional vision, the ability to judge distance and spatial relationships, precise hand-eye coordination, and the ability to identify and distinguish colors. 
  • Regularly required to lift up to 15 pounds. Frequently required to lift up to 50 pounds. Occasionally required to lift up to 75 pounds. 

Based in St. Louis, Missouri, USA, The Doe Run Company is a privately held natural resources company and a global provider of lead, copper, and zinc concentrates. Dedicated to environmentally responsible mineral and metal production, Doe Run operates the Resource Recycling facility, one of the world’s largest, single-site lead recycling centers, located in Boss, Missouri. The company also owns six operating mines in one of the world’s largest lead mining districts, also in Missouri: Brushy Creek, Buick, Casteel, Fletcher/West Fork, Mine 29/Viburnum and Sweetwater. The Doe Run Company and its subsidiaries deliver products and services necessary to provide power, protection, and convenience. Doe Run has operations in Missouri, Washington, and Arizona. For more information, visit www.doerun.com.

All job offers are contingent upon the candidate's successful completion and clearance of post-offer drug screen, physical, and background check.  Background checks include verification of education, employment history, and criminal record review.  The role may also require a motor vehicle record review and ATF explosives possessor clearance. 

Doe Run is an Equal Opportunity Employer, including disability and veterans. 

Salary : $33

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