Jeremy Creelan, special counsel to Andrew Cuomo for public integrity and ethics since the governor took office in January 2011, has rejoined Jenner & Block as a litigation partner.

Creelan will work in both New York and in Washington, D.C., in Jenner & Block’s complex commercial litigation and government controversies and public policy litigation practices.

Creelan helped negotiate the Public Integrity Reform Act for Cuomo, which led to creation of the Joint Commission on Public Ethics [JCOPE]. He credited Cuomo with doing more than other governors in recent history to improve oversight of government integrity. He said he expects the governor to continue to try to toughen anti-bribery laws, strengthen enforcement at the state Board of Elections and push for campaign finance reforms.

“[JCOPE] is a substantial improvement over what has gone before,” Creelan said in an interview Monday. “I think we made very solid progress.”

Creelan has also been deputy director of the Democracy Program at the Brennan Center for Justice at New York University School of Law, where he established his public integrity credentials by coauthoring a 2004 report that highlighted failings of the state Legislature.

Richard Ziegler, managing partner of Jenner & Block’s Manhattan office, said the firm has a strong tradition of public service and expects Creelan to lend his expertise to state or city public integrity initiatives on the side.

Creelan, 44, a Yale Law School graduate, earned $150,000 a year working for Cuomo.