Summer 2025 Internship - IT Build Your Career. Build America's Future. Vulcan Materials Company is the nation's largest producer of construction aggregates and a major producer of aggregates-based construction materials, including asphalt and ready-mixed concrete. When you join Vulcan, it's more than starting an exciting career - you get to make a difference for millions of people every day across the country. When you join Vulcan, you join a dynamic culture in which career development is encouraged, excellence is rewarded, and diversity is valued. No matter the role or the location across the country, every member of the Vulcan team lives through the Vulcan Way: doing the right thing, the right way, at the right time.