Credit Suisse's investment bank has recruited a Goldman Sachs partner to oversee its fixed income and equities businesses, putting the two units under a common leader as part of Brady Dougan's plan to create a more unified investment bank.

Goldman Sachs partner Michael Ryan will officially join Credit Suisse in the middle of this year, the firm said. Ryan will hold the new role of head of securities for the investment banking division, meaning he will oversee the fixed income business run by Jim Healy and the equities business run by Tony Ehinger.