
The Sigma Group named Top 25 Largest Engineering Firms in Wisconsin
The Sigma Group was again recently named as one of the Top 25 “Largest Wisconsin Engineering Firms” by the Milwaukee Business Journal for 2015. The Sigma Group was also recognized by the Business Journal as being one of the top Environmental Consultants for 2015. An employee owned company, The Sigma Group is celebrating 25 years of delivering innovative solutions to our clients.