Frank Lautenburg Federal District Courthouse, Newark, where U.S. District Judge Esther Salas presides.

Roy Den Hollander, the now-deceased lawyer whom investigators have connected to the July 19 murder of the son of a New Jersey federal judge, worked in Big Law for several stints over a 25-year career.

Hollander, who was found dead Monday in upstate New York, spent three years as an associate at Cravath, Swaine & Moore in the mid-1980s, according to a resumé posted on his website. More recently, he worked as a contract attorney for Quinn Emanuel Urquhart & Sullivan in New York from 2011 to 2014.

The FBI has identified Hollander as the primary subject in the attack that occurred at the North Brunswick, New Jersey, home of U.S. District Judge Esther Salas. Salas' son, Daniel Anderl, was killed in the attack and her husband, defense attorney Mark Anderl, was left in critical condition.

CNN reported that Hollander was discovered dead with a self-inflicted gunshot wound.

The late attorney, whose website cites the New York Times to describe him as an "anti-feminist lawyer" had an extensive career in civil litigation since his 1985 graduation from George Washington University Law School.

After a year with the U.S. Department of Treasury honor program, working in the office of the chief counsel of the Internal Revenue Service, he joined Cravath in New York in 1986. His resume says that he worked on a "successful around-the-clock, high-pressure effort" to fend off the hostile takeover of a multibillion-dollar corporation and also prepared testimony on the valuation of a major Atlantic City casino in the successful defense of a multimillion-dollar fraud suit. A representative from Cravath did not respond to an inquiry about Hollander's time at the firm.

In 1990, Hollander began two decades of work as a solo practitioner in New York, Russia and Ecuador. He claims to have provided financial advice to the Russian Ministry of Foreign Economic Affairs on increasing hard currency revenues by trading in Russian's foreign debt, and to have counseled an Ecuadorian presidential candidate on a comprehensive plan for reducing that country's foreign debt without further impoverishing the nation.

His resumé said that he joined Quinn Emanuel as a contract attorney in 2011, working on a  residential and commercial mortgage-backed securities fraud case and serving as a team leader for privilege review.

"He was never a QE employee but worked on one firm matter several years ago through a temp agency, HireCounsel," a spokesman for the firm said.

The most recent entry on his resume, from 2015-2018, listed him as a document review contract attorney for temporary agencies on behalf of firms including Paul, Weiss, Rifkind, Wharton & Garrison, Simpson Thacher & Bartlett, Reed Smith and Cohen & Gressler.

But Hollander's primary focus in recent years, according to his website, appears to have been on "men's rights." He filed lawsuits challenging the constitutionality of ladies' nights at bars and nightclubs, questioning the legitimacy of Columbia University's women's studies program in the absence of a "men's studies" program, and asserting that feminism was a "religion" that was improperly promoted and financed at Columbia by state and federal funding.