[6][10] Before coming to the Bar, Hausdorff qualified as a solicitor in 2015, with the United States multinational commercial law firm Skadden, Arps, Slate, Meagher & Flom, with whom she practiced in London and Brussels from 2013 to 2015.

[9][11] Hausdorff clerked for the president of the Israeli Supreme Court in Jerusalem, Chief Justice Miriam Naor, from June until August 2016.

[11] On a volunteer pro bono basis, Hausdorff is the legal director of UK Lawyers for Israel Charitable Trust.

[14] She said that even though these cases may not ultimately be successful, those bringing the false charges do so for the public relations agenda they pursue, as they generate negative media attention about Israel.

[14] She believes as well that lawfare discredits "real international law and generates a double standard concerning the Jewish state.

[11] She has been a keynote speaker on aspects of public international law, foreign affairs, and national security policy.

[21] She referenced reports of Hamas shooting its own civilians and of Palestinian terror rockets falling short in the Gaza strip, killing indiscriminately.

While emphasising that international humanitarian law was intention based and not effects based, she has drawn comparisons between the civilian to combatant ratio in Gaza, which was between 1:1.5 and 1:1 and the United Nations reported that a global average in urban warfare of 1:9, and United States statistics in its wars Iraq and Afghanistan reflected 1:3 to one and 1:5 respectively.

[24] Speaking in May 2024 about International Criminal Court (ICC) prosecutor Karim Kahn having requested the issuance of arrest warrants against leaders of Hamas as well as against Israeli prime minister Benjamin Netanyahu and Defense Minister Yoav Galant for war crimes and crimes against humanity in the Gaza Strip, she said: "[T]here should not have been any threat from the criminal court, because it has no jurisdiction to investigate the events taking place on the soil of Israel or Gaza.

The court's jurisdiction is limited to conflicts that occur on the territory of countries that are signatories to the Treaty of Rome that established the ICC ... or to actions for which a complaint has been filed by a member state....

[34] On 24 April 2024 Hausdorff gave expert evidence to the Business and Trade Committee of the House of Commons of the United Kingdom on the proper interpretation of the ICJ’s Provisional Measures Order of 26 January 2024.

The event caused much controversy with several Oxford academics writing to “unequivocally condemn the incendiary remarks made by some speakers in support of Hamas and terrorist violence."

As a leading member of Jerusalem's Jewish community in 1866 he was authorized by the Prussian consul to act as a defense attorney for Jews in legal proceedings.