Jeh Johnson, who stepped down as secretary of Homeland Security, is rejoining NY law firm Paul, Weiss, Rifkind, Wharton & Garrison as a partner in the firm’s litigation department. Mr. Johnson, 59, has worked intermittently at Paul, Weiss, returning 4 times after stints in public service, including 3 presidential appointments that required Senate confirmation. He led the Department of Homeland Security under the Obama administration.

From 2009 to 2012, Johnson served as general counsel of the Defense Department; in 2010, he was an author of a Defense Department report that paved the way for the repeal of the “don’t ask, don’t tell” policy by Congress.

In his new role at Paul, Weiss, a 900-lawyer firm, Mr. Johnson will advise clients, including boards of directors, on crisis management, government and internal investigations, high-stakes litigation and regulatory matters, as well as legal aspects of cybersecurity and other security matters. He will have offices in New York and Washington.