White House deputy chief of staff Rick Dearborn, who manages the White House’s political operation, public outreach, and legislative affairs, will soon resign from his post, according to a new report.

“Rick loyally served the president for two and a half years and brought tremendous energy to the White House staff,“ White House chief of staff John Kelly said, according to Wall Street Journal report Thursday evening. ”He’s a super guy and it breaks my heart to see him leave, but I look forward to his continued personal friendship and support for the president’s agenda.”

Dearborn will stay in his position at the White House until January or February, people familiar with the situation told the Wall Street Journal. He is said to have told colleagues that the successful passage of the tax overhaul in Congress was a fitting finale for his tenure in government.

Dearborn plans to join the private sector thereafter.

During Dearborn’s tenure working with Trump, he assisted establishing the Trump campaign’s Washington office and was executive director of the presidential transition team following the election. Previously, he worked as a Senate aide.

“Rick has been a real stalwart,” Gary Cohn, White House chief economic adviser, told the Wall Street Journal. “I’ve really relied on him as part of the tax team, and he’s filled in a bunch of different jobs around here. He’s been a grown-up in the room.”