Process Engineering Co-Op
Listed on 2026-08-30
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Engineering
Process Engineer, Chemical Engineering, Quality Engineering
Process Engineering Co-Op
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…and we are global! The company is committed to development and employee satisfaction. Join our outstanding team!
As a Process Engineering Co-Op, you'll gain real-world experience while contributing to meaningful projects that impact plant performance and operational success. Students will have opportunities to develop skills in:
Process optimization and continuous improvement
Manufacturing data analysis and reporting
Root cause analysis and problem solving
Process controls and quality systems
Capital project support and execution
Process safety and environmental compliance
Cross-functional teamwork in a heavy industrial environment
Professional presentation and communication skills
The Process Engineering Co-Op supports Engineering, Operations, and Maintenance teams by helping improve manufacturing processes, plant performance, safety, and operational efficiency across MLC's facilities.
Collect and analyze production, quality, and operational data to identify improvement opportunities
Assist with engineering calculations, process evaluations, and performance studies
Participate in troubleshooting efforts and root cause analysis investigations
Support continuous improvement initiatives focused on safety, quality, reliability, and productivity
Assist with capital and plant improvement projects, including field inspections and startup activities (measurement of key process parameters, including air flows, mass flows, temperatures, etc.)
Collaborate with Operations, Maintenance, Quality, and Engineering teams to support plant objectives
Participate in plant trials and evaluate results to support data-driven decision making
Develop reports, recommendations, and presentations for engineering and plant leadership
Sophomore standing or higher pursuing a Bachelor's degree in Chemical Engineering, Mechanical Engineering, Electrical Engineering, Mining Engineering, or a related engineering discipline
Minimum 2.75 GPA
Ability to work in an industrial manufacturing, mining, and chemical processing environment
Proficiency with Microsoft Office applications, including Excel, Word, PowerPoint, and Outlook
Strong analytical, problem-solving, and critical-thinking skills
Effective verbal, written, and interpersonal communication skills
Strong organizational skills and attention to detail
Commitment to maintaining a safe work environment and following all safety and environmental requirements
Coursework or project experience in Process Engineering, Thermodynamics, Heat Transfer, Fluid Mechanics, Process Controls, Manufacturing Systems, or Statistical Analysis
Experience performing engineering calculations, technical analysis, laboratory work, or data analysis
Interest in manufacturing, mining, process industries, or industrial operations
Ability to work effectively with cross-functional teams in a fast-paced environment
Benefits and perquisites may vary based on the nature and location of each job.
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.
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