Maintenance Technician

MLC; Bonne Terre (MO); On-site; USD 52,000 - 78,000; Full time

Benefits offered by this job

401(k) matching

Tuition reimbursement

Vacation & holidays

Health savings plan

Disability insurance & EAP

Incentive program

Career development

Student loan reimbursement

Job summary

MLC, headquartered in St. Louis, MO, is seeking a Maintenance Technician to perform preventive maintenance, troubleshoot, repair, and rebuild plant and mobile equipment to maximize reliability and safety.

The role requires 3–5 years in manufacturing maintenance, ability to read blueprints, operate CMMS, and work at heights and in confined spaces. The position offers competitive compensation and opportunities for growth within a global company.

Qualifications

• High school diploma or equivalent.
• 3 to 5 years of maintenance experience in a manufacturing or industrial environment.
• Experience troubleshooting and repairing mechanical equipment, hydraulic systems, and pneumatic systems.
• Ability to read and interpret blueprints and mechanical drawings.
• Working knowledge of precision measuring tools, bearings, lubricants, seals, and equipment alignment practices.
• Ability to work at heights, in confined spaces, and in physically demanding environments.
• Basic computer, math, and written communication skills.
• Ability to work overtime, weekends, holidays, and participate in on-call rotations as required.

Responsibilities

• Inspect, maintain, troubleshoot, and repair plant and mobile equipment.
• Perform preventive maintenance and document findings to support equipment reliability.
• Disassemble, rebuild, and install crushing, screening, and conveying equipment.
• Diagnose and repair hydraulic, pneumatic, and compressed air systems.
• Perform shaft alignments, bearing installations, and belt, chain, and sprocket alignments using precision tools.
• Complete work orders, inspections, and maintenance documentation accurately within the CMMS system.
• Operate plant mobile equipment and assist with fabrication, welding, and metal repairs.
• Maintain a safe work environment while complying with MSHA regulations and company safety standards.

Skills

Troubleshooting

Mechanical repair

Hydraulic systems

Pneumatic systems

Equipment alignment

CMMS

Reading blueprints

Safety compliance

Problem-solving

Welding

Education

High school diploma or equivalent

Tools

CMMS

Job description

Job Title: Maintenance Technician

Why consider a career at MLC?

• Highly collaborative work environment focused on growth and innovation
• Safety and sustainability are top priorities
• Excellent compensation, benefits, generous perks; focused on employee wellbeing
• Great development and advancement opportunities
• Bring your real self to work, come grow with us!

Why consider a career at MLC?

MLC was recognized by Newsweek as one of America’s Greatest Workplaces & received an EcoVadis Sustainability Rating for our continued commitment to sustainability.

• Highly collaborative work environment focused on growth and innovation
• Safety and sustainability are top priorities
• Excellent compensation, benefits, generous perks; focused on employee wellbeing
• Great development and advancement opportunities
• Bring your real self to work, come grow with us!

MLC operates the largest lime facility in the Americas and mines some of the purest limestone reserves in the world…and we are global! The company is committed to development and employee satisfaction. Join our outstanding team!

Benefits & Professional Growth

MLC offers a competitive and thoughtfully designed rewards package that supports both financial security and long-term career development:

• 401(k) Plan The company matches a portion of employee 401(k) contributions and also provides an additional employer-funded contribution, regardless of employee participation, to help support long‑term retirement savings.
• Tuition Reimbursement Reimbursement for 100% of approved eligible education expenses after six months of employment to support continued learning and career advancement.
• Vacation and Holiday Pay Employees receive paid vacation as well as recognized company-paid holidays to support work-life balance throughout the year.
• Health Savings & Wellness Benefits Employer HSA contributions for medical plan participants, a comprehensive wellness program, and $100 annually toward a gym membership.
• Disability & Employee Assistance Coverage Company‑provided disability insurance and access to an Employee Assistance Program (EAP) offering mental health, financial, and personal support resources.
• Incentive Program Eligibility for performance-based incentive opportunities aligned with individual and organizational success.
• Career Growth & Development Opportunities Access to professional development resources and opportunities within a growing, global organization.
• Coming soon…Student Loan Reimbursement assistance

About The Job

The Maintenance Technician performs preventive maintenance, troubleshooting, repairs, and rebuilds on plant and mobile equipment to maximize equipment reliability, safety, and operational performance.

• Inspect, maintain, troubleshoot, and repair plant and mobile equipment.
• Perform preventive maintenance and document findings to support equipment reliability.
• Disassemble, rebuild, and install crushing, screening, and conveying equipment.
• Diagnose and repair hydraulic, pneumatic, and compressed air systems.
• Perform shaft alignments, bearing installations, and belt, chain, and sprocket alignments using precision tools.
• Complete work orders, inspections, and maintenance documentation accurately within the CMMS system.
• Operate plant mobile equipment and assist with fabrication, welding, and metal repairs.
• Maintain a safe work environment while complying with MSHA regulations and company safety standards.

Required Qualifications

• High school diploma or equivalent.
• 3 to 5 years of maintenance experience in a manufacturing or industrial environment.
• Experience troubleshooting and repairing mechanical equipment, hydraulic systems, and pneumatic systems.
• Ability to read and interpret blueprints and mechanical drawings.
• Working knowledge of precision measuring tools, bearings, lubricants, seals, and equipment alignment practices.
• Ability to work at heights, in confined spaces, and in physically demanding environments.
• Basic computer, math, and written communication skills.
• Ability to work overtime, weekends, holidays, and participate in on-call rotations as required.

Preferred Qualifications

• Valid welding certification, such as ASME 4G or equivalent.
• Experience with welding, cutting, fabrication, and basic steel component design.
• Knowledge of crushing, screening, conveying, and dust collection equipment.
• Experience operating cranes, rigging equipment, and plant mobile equipment.
• Familiarity with thermography, non‑destructive testing, and thickness testing.
• Experience using computerized maintenance management systems (CMMS).
• Strong troubleshooting and problem‑solving skills.
• Self‑starter with the ability to work independently and communicate effectively with team members.

The Fine Print

Benefits and perquisites may vary based on the nature and location of each job.

About MLC

MLC, headquartered in St. Louis, Mo., is a leading global supplier of high‑calcium lime products and technical solutions. These offerings bring essential performance and value to a broad range of market applications, including metals, construction, chemical synthesis, water and emissions treatment, glass, textiles, plastics, rubber, agriculture, foods and beverages. With over a century in business, MLC has built a reputation on the quality of its products and services, as well as an unwavering commitment to safety, sustainability and service. The company’s expanding global footprint includes a diversified, reliable network of production and distribution facilities in the U.S., as well as in the UK through our Singleton Birch business. For more information, visit https://www.mlc.com/.