A Panama native, Sergio Castillo says he aims to grow Lake Elmo-based Eco BCG into a “global leader in sustainable engineering services.” Launched by his father in his home country in 1999, the company reincorporated in Minnesota in 2021 to better serve a growing range of Fortune 500 manufacturing clients. Castillo, a former 3M employee, says Eco BCG helps customers integrate sustainability best practices into manufacturing processes. Evidently, more companies are turning to Eco BCG for help: In 2023, the firm was ranked the fastest-growing Minnesota company on the annual Inc. 5000 list.

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