INTERNSHIP DETAILS

Operational Technology (OT) Infrastructure Engineering Co-Op

CompanyMLC
LocationSainte Genevieve
Work ModeOn Site
PostedAugust 25, 2026
Internship Information
Core Responsibilities
The OT Infrastructure Engineering Co-Op supports the design, maintenance, and monitoring of industrial network infrastructure and operational technology systems. They will collaborate with cross-functional teams to troubleshoot issues, implement security best practices, and execute technology projects across manufacturing facilities.
Internship Type
full time
Company Size
1025
Visa Sponsorship
No
Language
English
Working Hours
40 hours
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About The Company
With over a century in business, MLC (formerly Mississippi Lime Company) has built a reputation on the purity of its products, commitment to research and development, and tradition of customer satisfaction. MLC operates the largest lime facility in the Americas and mines some of the purest limestone reserves in the world. The company supplies high-calcium quicklime, hydrated lime, calcium carbonate products, trucking services, and technical solutions from a diversified, reliable network of facilities in Ste. Genevieve, MO; Calera, AL; Verona, KY; Vicksburg, MS; Weirton, WV; Chester, SC; Mobile, AL; Prairie du Rocher, IL; Bridgeville, PA; as well as several distribution sites throughout the country. MLC is a privately held company that has a fully integrated system for mining limestone and manufacturing high-quality, food-grade calcium products and pulverized limestone. MLC also owns and operates a trucking and logistics subsidiary, MLC Trucking, to further support customer needs and ensure additional supply security.
About the Role

Job Title: Operational Technology (OT) Infrastructure Engineering Co-Op

Why consider a career at MLC?  

MLC was recognized by Newsweek as one of America’s Greatest Workplaces in 2024.

  • 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 Development Opportunities

As an OT Infrastructure Engineering Co-Op, you'll gain real-world experience while supporting the technology systems that enable safe, reliable, and secure manufacturing operations. Students will have opportunities to develop skills in:

  • Industrial networking and infrastructure management
  • Operational Technology (OT) and industrial cybersecurity
  • Windows Server administration and virtualization technologies
  • Industrial control systems and manufacturing technology platforms
  • System troubleshooting, diagnostics, and root cause analysis
  • Infrastructure lifecycle management and disaster recovery concepts
  • Data analysis, automation tools, and continuous improvement initiatives
  • Career development opportunities in OT Infrastructure, Industrial Networking, Cybersecurity, Automation, and IT/OT Convergence

What You'll Do

The OT Infrastructure Engineering Co-Op supports the design, maintenance, monitoring, and continuous improvement of Operational Technology (OT) infrastructure that supports manufacturing operations across MLC facilities.

  • Monitor and support the reliability, security, and performance of industrial network infrastructure, servers, and Operational Technology systems
  • Assist with Windows Server administration, virtualization technologies, backup verification, disaster recovery activities, and system maintenance
  • Maintain OT asset inventories, network documentation, system configurations, and infrastructure records
  • Support cybersecurity initiatives including vulnerability management, security monitoring, and implementation of OT security best practices
  • Participate in infrastructure projects involving industrial networking, virtualization, server systems, storage platforms, video surveillance, and access control technologies
  • Assist with testing, deployment, commissioning, and validation of new systems and infrastructure upgrades
  • Analyze operational data and develop reports, dashboards, and automation tools that improve visibility, reliability, and efficiency
  • Collaborate with OT, IT, Engineering, Operations, and Maintenance teams to troubleshoot issues, support continuous improvement efforts, and execute technology projects

Required Qualifications

  • Sophomore standing or higher pursuing a Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, Information Technology, Cybersecurity, or a related technical discipline
  • Minimum 2.75 GPA
  • Basic understanding of computer networking concepts, including IP addressing, switching, routing, and network troubleshooting
  • Familiarity with Windows operating systems, computer hardware, and general IT infrastructure concepts
  • Ability to work safely in an industrial manufacturing, mining, and chemical processing environment
  • Strong analytical, problem-solving, and critical-thinking skills
  • Ability to quickly learn new technologies and adapt to changing priorities
  • Effective verbal, written, and interpersonal communication skills with the ability to work independently and collaboratively

Preferred Qualifications

  • Coursework or project experience involving computer networking, cybersecurity, systems administration, industrial automation, or industrial control systems
  • Experience with Microsoft Windows Server, Active Directory, or virtualization platforms such as VMware
  • Familiarity with Cisco networking equipment, firewalls, and network security concepts
  • Experience with scripting or programming languages such as PowerShell, Python, C#, or similar technologies
  • Interest in Operational Technology (OT), Industrial Control Systems (ICS), Industrial Cybersecurity, or IT/OT convergence
  • Ability to work effectively with cross-functional teams in a fast-paced technical 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 https://www.mlc.com/.

Key Skills
Industrial networkingOperational technologyCybersecurityWindows server administrationVirtualizationIndustrial control systemsSystem troubleshootingDisaster recoveryData analysisAutomation toolsInfrastructure managementNetwork securityActive directoryPythonPowerShellCisco networking
Categories
EngineeringTechnologyManufacturingSecurity & SafetyData & Analytics
Benefits
Excellent compensationGenerous perksEmployee wellbeing focusDevelopment opportunitiesAdvancement opportunities