Product Engineer Intern

Cornerstone Building Brands • Londonderry, NH

68d

About The Position

This internship is for Summer 2026. The Product Engineering Intern will support the Product Engineering Team in developing innovative, problem-solving solutions for the building industry. This internship offers a unique opportunity to gain hands-on experience with window and door products while contributing to projects focused on new product development, product improvements, and cost-savings initiatives. As an intern, you will work alongside experienced engineers, gaining exposure to design, testing, and manufacturing processes. This role provides meaningful, real-world project experience, along with visibility across the organization. Professional growth and learning opportunities are strongly encouraged and supported throughout the internship.

Requirements

• Pursuing a bachelor's degree in Mechanical or Industrial Engineering or higher.
• Experience working with AutoCAD, Inventor and/or Solid Works preferred.

Responsibilities

• Assist in the design, prototyping, and testing of new products.
• Support engineers in analyzing current products and maintaining specifications.
• Participate in reviewing and researching new product concepts to determine feasibility.
• Assist in ensuring products comply with industry certification standards related to performance, safety, structural integrity, and energy efficiency (e.g. AAMA, WDMA, NAMI, CSA, NFRC, IGMA).
• Prepare and update drawings, schematics, technical documentation, and work instructions under engineer guidance.
• Support documentation and execution of Engineering Change Orders (ECOs) and Non-Standard Product Requests.
• Participate in cross-functional meetings with engineering, manufacturing, and other business teams.
• Gain exposure to manufacturing environments by supporting new product launches, audits, and production troubleshooting.
• Support voice-of-customer activities and continuous improvement (kaizen) exercises.
• Accompany engineers on site visits to observe field testing, customer service activities, or installation practices.

Benefits

• Competitive pay
• Inclusive, collaborative environment
• Bragging rights - you'll work for the market leader in multiple product categories
• Professional development opportunities
• Intern buddy

What This Job Offers

• Career Level: Intern
• Industry: Professional, Scientific, and Technical Services
• Education Level: Bachelor's degree
• Number of Employees: 5,001-10,000 employees