Job ID: 517969
Non-Exempt
Oldcastle Infrastructure™, a CRH company, is the leading provider of utility infrastructure solutions for the water, energy, and communications markets throughout North America. We’re more than just a manufacturer of precast concrete, polymer concrete, or plastic products. We’re a trusted and strategic partner to engineers, contractors, distributors, specifiers, and more. With our network of more than 80 manufacturing facilities and more than 4,000 employees, we’re leading the industry with innovation and a safety-first mindset.
Oldcastle Infrastructure - Built For Life from Oldcastle Infrastructure on Vimeo .
Job Summary
Oldcastle Infrastructure is seeking a highly motivated Engineer-in-Training Intern to support both engineering and drafting functions. This interdisciplinary role provides a robust learning experience across engineering design, production processes, and continuous improvement. Interns will apply classroom-learned engineering principles to correct and update drawings, compare design iterations, analyze production processes, and contribute to improvements that support product accuracy, operational efficiency, and cross-functional alignment.
This position is expected to start in-person around May 2026 and continue through the entire Summer ( i.e May 2026 through August 2026). We ask for a minimum of 12 weeks, full-time and on-site, for most internships.
Job Location:
This is an onsite position located in Lebanon, TN.
Job Responsibilities
Engineering & Process Support
• Analyze manufacturing processes, collect data, and recommend improvements.
• Support troubleshooting efforts to reduce downtime and improve workflow.
• Learn production processes and ensure engineering documentation aligns with operational capabilities.
• Collaborate with estimating and production teams to validate specifications, quantities, and drawing accuracy.
• Assist in updating and maintaining current product drawings and engineering documents.
Drafting & Drawing Accuracy
• Review, compare, and correct engineering drawings to ensure precision and consistency.
• Update 2D and 3D models using Autodesk Inventor and AutoCAD.
• Generate accurate drawings and models based on Bills of Material (BOM) and ERP data.
• Maintain organized CAD files and support improvements to drafting workflows.
Cross-Functional Collaboration
• Partner with engineering, estimating, production, and operations teams to communicate drawing updates and design changes.
• Participate in engineering discussions to understand design intent and production requirements.
• Provide input to enhance drafting standards and documentation practices.
Requirements:
• Sophomore, Junior, or Senior pursuing a Bachelor’s Degree in Engineering, Civil Engineering, Engineering Design/Drafting, Construction Management or a related field.
• Demonstrated knowledge of engineering fundamentals with proficiency in Microsoft Office, AutoCAD, and/or Autodesk Inventor.
• Strong analytical and problem-solving abilities with attention to detail.
• Excellent interpersonal skills and strong written and verbal communication.
• Ability to work both independently and within cross-functional teams.
• Ability to write technical reports, analyze raw data, and translate findings into actionable recommendations.
Compensation
What CRH Offers You
About CRH
CRH has a long and proud heritage. We are a collection of hundreds of family businesses, regional companies and large enterprises that together form the CRH family. CRH operates in a decentralized, diversified structure that allows you to work in a small company environment while having the career opportunities of a large international organization.
If you’re up for a rewarding challenge, we invite you to take the first step and apply today! Once you click apply now, you will be brought to our official employment application. Please complete your online profile and it will be sent to the hiring manager. Our system allows you to view and track your status 24 hours a day. Thank you for your interest!
Oldcastle Infrastructure, a CRH Company, is an Affirmative Action and Equal Opportunity Employer.
EOE/Vet/Disability
CRH is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, status as a protected veteran or any other characteristic protected under applicable federal, state, or local law.
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