Senior Pilot Plant ​/ R&D Technician

Job Title: Senior Pilot Plant & Field Service Technician

MLC was recognized by Newsweek as one of America's Greatest Workplaces & received an Eco Vadis 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... The company is committed to development and employee satisfaction. Join our outstanding team!

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

Join MLC's Research & Development team and play a hands-on role in advancing new technologies, testing innovative process solutions, and supporting customers through equipment deployments and technical service projects.

• Prepare, operate, troubleshoot, and maintain mobile equipment systems used for customer demonstrations, trials, and technical service projects.
• Travel to customer sites to install, commission, and support lime storage and handling equipment while training operators on safe and effective use.
• Support pilot plant and full-scale testing activities through equipment setup, execution, sampling, data collection, and reporting.
• Build, modify, repair, and maintain mechanical systems and process equipment used in R&D and technical service applications.
• Collaborate with engineers, scientists, plant personnel, and operations teams to safely execute development projects and process improvements.
• Utilize plant and process knowledge to streamline testing activities and improve sample collection and evaluation efforts.
• Coordinate with vendors, contractors, customers, and internal stakeholders to support project objectives and equipment solutions.
• Perform laboratory testing, operate forklifts and other industrial equipment, and assist with ongoing technical service and innovation initiatives.

• High school diploma or equivalent.
• Minimum of 5 years of experience in a manufacturing plant, industrial facility, or pilot plant environment.
• Experience performing mechanical maintenance, fabrication, equipment assembly, or industrial troubleshooting.
• Ability to safely use shop tools and equipment for cutting, grinding, welding, and general mechanical work.
• Basic computer and math skills.
• Ability to travel to customer locations as needed.
• Strong communication skills and ability to work independently as well as within a team environment.

• Experience with lime manufacturing processes, including calcination, hydration, bulk material handling, or related mineral processing operations.
• Millwright, maintenance, fabrication, or mechanical trade experience.
• Experience commissioning, operating, or troubleshooting industrial equipment in customer-facing environments.
• Forklift certification or experience operating mobile industrial equipment.
• Experience supporting pilot plant, process development, or R&D testing activities.
• Working knowledge of laboratory testing procedures and sample evaluation techniques.
• Strong problem-solving skills with a proactive, hands-on approach to technical challenges.

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

for MLC EEO information

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…