Brian Madigan, who ran the Federal Reserve’s powerful monetary affairs group, is joining Barclays Capital as a senior policy adviser, according to an internal memo announcing the hire.

Madigan left the Fed board in Washington in 2010 after running its monetary affairs group for three years. In that spot, he was one of Fed chairman Ben Bernanke's top staff advisors and played a central role in designing many of the Fed's emergency rescue programs during the financial crisis.