Administrative Assistant

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Cornerstone Building Brands is a leading manufacturer of exterior building products for residential and low‑rise non‑residential buildings in North America. Headquartered in Cary, N.C., we serve residential and commercial customers across the new construction and Repair & Remodel (R&R) markets. Our market‑leading portfolio of products spans vinyl windows, vinyl siding, stone veneer, metal roofing, metal wall systems and metal accessories. Cornerstone Building Brands’ broad, multi‑channel distribution platform and expansive national footprint includes more than 18,800 team members at manufacturing, distribution and office locations throughout North America.

Corporate stewardship and Environmental, Social and Governance (ESG) responsibility are embedded in our culture. We are committed to contributing positively to the communities where we live, work and play. For more information, visit us at

This internship is for Summer 2026. The Engineering Intern at Cornerstone Building Brands is responsible for performing engineering projects related to the continuous improvement of production, production control, and/or quality. Reporting directly to the Production Manager, this role will be on site at our Ply Gem Windows plant in Auburn, WA.

• Create a Standard Work for every position in plant
• Conduct time studies on every position in the plant
• Create a balance Chart for every line in the plant

• Creating process flows
• Process mapping
• Creating layouts
• Test equipment design/improvement
• Non‑conforming material inspection, auditing and test processes

• Must be currently enrolled in and pursuing a degree in Electrical, Manufacturing, Industrial, or Mechanical Engineering at an accredited school.
• Experience with Auto Cad, Inventor, or Solid works will be an advantage
• Experience in data interpretation/manipulation via MS Excel preferred
• Experience in a manufacturing environment is preferred but not required, although a demonstrable interest in industrial processes will be evaluated during the interview process. Students with any level of experience are encouraged to apply.
• Interns will work in office and shop floor environments with extended periods of sitting and standing. Must be able to communicate and engage with employees on the shop floor. Must be able to wear all required Personal Protective Equipment (PPE).
• Must have valid US work authorization.

• Hands‑on experience working on real‑world projects with direct impact on business operations.
• Mentorship and guidance from experienced professionals in the field of continuous improvement.
• Networking opportunities with colleagues and industry professionals.
• Competitive internship compensation package.

Our teams are at the heart of our purpose to positively contribute to the communities where we live, work and play. Full‑time
* team members receive
** medical, dental and vision benefits starting day 1. Other benefits include PTO, paid holidays, FSA, life insurance, LTD, STD, 401k, EAP, discount programs, tuition reimbursement, training, and professional development.

• Full‑time is defined as regularly working 30+ hours per week.
  ** Union programs may vary depending on the collective bargaining agreement.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, pregnancy, genetic information, disability, or status as a protected veteran. You can find the Equal Employment Opportunity Poster here. You can also view Your Right to Work Poster here along with This Organization's Participation in E‑Verify Poster here. If you'd like to view a copy of the company's affirmative action plan for protected veterans or individuals with disabilities or policy statement, please contact Human Resources at 281‑897‑7788 or HR If you have a disability and you believe that you need a reasonable accommodation in order to…