Holder of a DESCF and a Master in Finance & Capital Markets in a business school in 1998, Steeve began his career with an investment bank as a Trader on interest rate products then moved on to equities.

In September 2000, he joined one of the subsidiaries of the Altran group to develop the Banking / Finance sector there for 6 years.

In October 2006, he co-founded CMG CONSEIL with his partner Raphaël FAURE then created CMG ADVISORY in 2011 and CMG CONSULTING GROUP in 2018.

Since 2013 he has also co-chaired , ESEM Holding with his partner Raphaël FAURE, a holding and control structure which today houses around twenty investments in the ecosystem of start-ups (robotics & AI, big data, digital, CSR, etc.).