Ahmad became a prosecutor for the United States Department of Justice in 2008, initially prosecuting gang activity in Brooklyn and Staten Island, but quickly moving to the prosecution of terrorists. In April 2013, she was appointed to the position of a deputy chief of the national security and cybercrime section in the Criminal Division of the U.S. Attorney's Office for the Eastern District of New York. Between 2009 and 2017, Ahmad prosecuted thirteen people charged with terrorism, winning every case. The New Yorker related: Terrorists prosecuted by Ahmad include:
Alhassane Ould Mohamed, a Malian who murdered U.S. defense attaché William Bultemeier in Niamey, Niger, and was later involved in numerous other attacks and crimes. Mohamed pleaded guilty and in 2016 was sentenced to 25 years in prison.
Najibullah Zazi and Abid Naseer, conspirators in the 2009 New York City Subway and United Kingdom plot. Zazi pleaded guilty in 2010 but has not yet been sentenced, as he is cooperating with investigators. In 2015, Naseer was convicted by a jury and sentenced to 40 years in prison.
Lawal Babafemi, a Nigerian Al Qaeda recruiter extradited to the United States. Babafemi pleaded guilty in 2014 and was sentenced to 22 years in prison the following year.
Ahmad also prosecuted Faruq Khalil Muhammad 'Isa, a Canadian national affiliated with ISIS charged with murdering five U.S. servicemen in a 2009 suicide bombing attack in Iraq. Muhammad 'Isa has pleaded not guilty and is awaiting trial. Ahmad also prosecuted Muhanad al-Farekh, an American charged with having provided material support to al Qaeda in Afghanistan. Al-Farekh has pleaded not guilty and is awaiting trial. In the spring of 2016, Ahmad took a leave from the U.S. Attorney's Office in E.D.N.Y to work at Justice Department headquarters, at the request of Attorney GeneralLoretta Lynch, dealing with transnational organized crime and international affairs. She returned to the E.D.N.Y. in April 2017, remaining there until July 2017, when she was selected by special counselRobert Mueller to join the Special Counsel for the United States Department of Justice team assembled to probe Russian interference in the 2016 United States elections and related matters. Ahmad was one of the team members responsible for handling the case against Michael Flynn, appearing in court on behalf of the Special Counsel for Flynn's plea bargain.
Personal life
Ahmad "was briefly married, to a lawyer from Jordan" before getting divorced. Ahmad is a Muslim, and says that "the primary relevance of my ethnic background to the work I do is its irrelevance", citing the rejection of terrorism by "the broader American-Muslim community".