[4] He received his Bachelor of Arts from the John Jay College of Criminal Justice in 1997, and his Juris Doctor from Rutgers Law School in 2000.

[6] In June 2003, Quraishi left private practice to serve in the United States Army Judge Advocate General’s Corps.

[5][7] Stationed first in Schweinfurt, Germany, he provided legal counsel to commanders, navigating the complex intersection of law and military operations.

[5][7] During this critical phase of the conflict, he worked amid intense combat conditions, once again applying his legal expertise to operational challenges on the ground.

[5][7] His service was distinguished by numerous decorations, including the Bronze Star and Combat Action Badge, as well as multiple commendation and achievement medals.

Critics said many of Quraishi's legal positions are unknown, and that his past work for U.S. Immigration and Customs Enforcement and his role as a "detention advisor" in the Iraq war raised questions about his stance on civil rights.

President Biden nominated Quraishi to the seat vacated by Judge Peter G. Sheridan, who assumed senior status on June 14, 2018.

[25] On March 29, 2024, Quraishi issued an injunction against the county line, directing clerks to instead print ballots with candidates organized by office in randomized order for the 2024 Democratic primary election.