Debevoise & Plimpton has created a new leadership position for Mary Jo White, who returned to the firm Wednesday after chairing the U.S. Securities and Exchange Commission for nearly four years under the Obama administration.

As senior chair at Debevoise, White said she will maintain a full-time practice as a partner and will also be a senior member on the firm’s management team, serving in an advisory role. The firm’s day-to-day management will still be handled by presiding partner Michael Blair and deputy presiding partner Bruce Yannett, she said in an interview.