Process Engineering Co-Op

Job Title: Process Engineering Co-Op

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!


Professional Growth Opportunities

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

What You'll Do

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

Required Qualifications

• 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

Preferred Qualifications

• 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

The Fine Print

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

Click here for MLC EEO information


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