Former JPMorgan executive Matt Zames is joining the Trump administration as an unpaid adviser to the Social Security Administration, where he will help Social Security Commissioner Frank Bisignano pursue agency modernization. Zames starts Monday at SSA headquarters in Baltimore, Maryland, according to people familiar with the move. He can serve as a special government employee for 130 days, although the period may extend because he will not work full-time. The agency relies on decades-old technology and is projected to exhaust its trust fund in less than a decade, potentially requiring benefit cuts for millions of Americans.