Cornerstone Building Brands
Data Analyst Intern
Cornerstone Building Brands, headquartered in Cary, North Carolina, is the largest manufacturer of external building products in North America with over $6 billion in annual revenue and an expansive North American footprint that includes almost 20,000 employees, operating in +70 manufacturing facilities, supported by a network of +80 distribution and branch office facilities. We have a broad product offering with a well-regarded brand portfolio including the #1 position in windows, vinyl siding, metal accessories, metal roofing and wall systems, and insulated metal panels. We believe every building we create, and every part of that building, positively contributes to communities where people live, work and play. This internship is for Summer 2026. We are seeking a detail-oriented Data Analyst Intern to support our NFRC (National Fenestration Rating Council) thermal simulation and certification processes. In this role, you will work closely with our engineering and product development teams to analyze thermal performance data for windows and doors, validate simulation results, and ensure compliance with industry standards. This internship provides hands-on experience at the intersection of data analytics, building performance, and sustainable product development. What You'll Do Assist in running, processing, and interpreting NFRC thermal simulation results (U-factor, SHGC, VT, condensation resistance). Collect, organize, and analyze simulation data using Excel, Python, or other data analysis tools. Collaborate with engineers to validate results and identify trends or discrepancies. Support documentation required for NFRC certification submissions. Develop reports, dashboards, and visualizations to clearly communicate simulation outcomes to internal teams. Conduct benchmarking studies against competitor or industry performance data. Provide insights that support R&D, product design, and energy efficiency initiatives. What You Need Currently pursuing a Bachelor's or Master's degree in Data Analytics, Mechanical Engineering, Materials Science, Building Science, or a related field. Strong analytical and quantitative skills with attention to detail. Experience with data analysis and visualization tools (Excel, Python, R, MATLAB, or similar). Familiarity with building performance concepts such as thermal transmittance, solar heat gain, and energy efficiency. Excellent communication skills and ability to present technical findings clearly. Exposure to fenestration thermal simulation software (e.g., THERM, WINDOW, or equivalent) preferred. Knowledge of NFRC standards, ENERGY STAR, or ASHRAE guidelines preferred. Experience with statistical analysis, regression modeling, or performance benchmarking preferred. Understanding of sustainability and green building certifications (e.g., LEED, Passive House) preferred. What You'll Get Competitive pay Inclusive, collaborative environment Bragging rights you'll work for the market leader in multiple product categories Professional development opportunities Intern buddy Why work for Cornerstone Building Brands? 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. Cornerstone Building Brands 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, pregnancy, genetic information, disability, or status as a protected veteran.
Cornerstone Building Brands, headquartered in Cary, North Carolina, is the largest manufacturer of external building products in North America with over $6 billion in annual revenue and an expansive North American footprint that includes almost 20,000 employees, operating in +70 manufacturing facilities, supported by a network of +80 distribution and branch office facilities. We have a broad product offering with a well-regarded brand portfolio including the #1 position in windows, vinyl siding, metal accessories, metal roofing and wall systems, and insulated metal panels. We believe every building we create, and every part of that building, positively contributes to communities where people live, work and play. This internship is for Summer 2026. We are seeking a detail-oriented Data Analyst Intern to support our NFRC (National Fenestration Rating Council) thermal simulation and certification processes. In this role, you will work closely with our engineering and product development teams to analyze thermal performance data for windows and doors, validate simulation results, and ensure compliance with industry standards. This internship provides hands-on experience at the intersection of data analytics, building performance, and sustainable product development. What You'll Do Assist in running, processing, and interpreting NFRC thermal simulation results (U-factor, SHGC, VT, condensation resistance). Collect, organize, and analyze simulation data using Excel, Python, or other data analysis tools. Collaborate with engineers to validate results and identify trends or discrepancies. Support documentation required for NFRC certification submissions. Develop reports, dashboards, and visualizations to clearly communicate simulation outcomes to internal teams. Conduct benchmarking studies against competitor or industry performance data. Provide insights that support R&D, product design, and energy efficiency initiatives. What You Need Currently pursuing a Bachelor's or Master's degree in Data Analytics, Mechanical Engineering, Materials Science, Building Science, or a related field. Strong analytical and quantitative skills with attention to detail. Experience with data analysis and visualization tools (Excel, Python, R, MATLAB, or similar). Familiarity with building performance concepts such as thermal transmittance, solar heat gain, and energy efficiency. Excellent communication skills and ability to present technical findings clearly. Exposure to fenestration thermal simulation software (e.g., THERM, WINDOW, or equivalent) preferred. Knowledge of NFRC standards, ENERGY STAR, or ASHRAE guidelines preferred. Experience with statistical analysis, regression modeling, or performance benchmarking preferred. Understanding of sustainability and green building certifications (e.g., LEED, Passive House) preferred. What You'll Get Competitive pay Inclusive, collaborative environment Bragging rights you'll work for the market leader in multiple product categories Professional development opportunities Intern buddy Why work for Cornerstone Building Brands? 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. Cornerstone Building Brands 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, pregnancy, genetic information, disability, or status as a protected veteran.