Engineer in Training Intern

Job ID:  518034

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 Engineering Intern to support engineering, drafting, and manufacturing functions. This interdisciplinary role provides a robust learning experience across engineering design, production processes, and continuous improvement initiatives. Interns will apply classroom-based engineering principles to update and maintain drawings, review Bills of Material (BOMs), analyze production processes, and support documentation that aligns engineering intent with manufacturing execution. 

This position is expected to start in-person around May 2026 and continue through the entire summer term (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 Madera, CA.

Job Responsibilities

• Engineering & Process Support 

• Analyze manufacturing processes, collect data, and assist with recommending improvements.

• Support troubleshooting efforts to reduce downtime and improve workflow efficiency.

• Learn production processes and ensure engineering documentation aligns with operational and manufacturing capabilities.

• Collaborate with estimating and production teams to validate specifications, quantities, and drawing accuracy.

• Assist in updating and maintaining current product drawings, BOMs, and engineering documentation.

• Gain exposure to robotic welding operations by supporting print review and BOM accuracy for standard welded products.

• Observe and assist with basic robotic welding programming updates and changeovers for repeatable products under engineering or production supervision.

• 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 and documentation standards.

• 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, robotic welding requirements, and production constraints.

• Provide input to enhance drafting standards, documentation practices, and manufacturability considerations.

• Assist with basic fixture design, review, and implementation to support robotic welding, assembly, and repeatable manufacturing processes.

Job Requirements

• Sophomore through Senior pursuing a bachelor’s degree in Engineering, Civil Engineering, Engineering Technology, Construction Management, or a related field.

• Foundational knowledge of engineering principles with proficiency in Microsoft Office.

• Exposure to AutoCAD and/or Autodesk Inventor preferred.

• Strong analytical and problem-solving skills with high attention to detail.

• Excellent written and verbal communication skills.

• Ability to work independently and collaboratively within cross-functional teams.

Compensation

• The hourly pay is $25.00/hr.

What CRH Offers You

• Highly competitive base pay
• Comprehensive medical, dental and disability benefits programs
• Group retirement savings program
• Health and wellness programs
• An inclusive culture that values opportunity for growth, development, and internal promotion

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