Paul Teller, the famed Republican Hill operative and chief of staff to Texas Sen. Ted Cruz, will serve his last day in the office on Friday.

"It has been a remarkable distinction to have been deputy chief of staff and then chief of staff for Senator Cruz for the past two-and-a-half years, helping him represent the extraordinary and wonderful people of Texas, especially during this momentous time in his life and in our nation's history," Teller said in a message announcing his departure.

"Senator Cruz is a man of principle and passion, of courage and decency, who is an inspiration to millions of people, myself included," Teller added. "I very much look forward to working with him in the future."

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Teller previously worked for the Republican Study Committee, a caucus of conservative lawmakers in the House, from 2001 to 2013. He rose to the perch of executive director before he was fired by Rep. Steve Scalise, the Louisiana Republican who then led the caucus, for allegedly undermining the wishes of its leadership by leaking member-level conversations.

Cruz hired Teller almost immediately afterwards as his deputy chief of staff, signaling his contempt for establishment Republicans in Congress. Teller is reportedly leaving Cruz's office in order to work for an unnamed nonprofit group and related political action committee, both of which will be geared towards promoting conservatism within the Republican Party.