By: Jeremy Murphy
For more than 40 years, John Esposito has been centered in some of New York’s most consequential criminal cases. A former Manhattan prosecutor, veteran trial lawyer, and partner at Aidala, Bertuna & Kamins, P.C., Esposito has built a career defined by courtroom advocacy and belief in the constitutional principles of the justice system.
Today, Esposito focuses on criminal defense work, handling trials, appeals, and investigations. His practice encompasses everything from white-collar crime to homicide prosecutions, and he represents clients in some of the region’s most high-profile matters.
A Career Built on Both Sides of the Courtroom
His path to criminal defense began in the Manhattan District Attorney’s Office under the legendary Robert Morgenthau. Esposito spent nearly eight years as a prosecutor, developing the courtroom skills and practical experience that would later define his work as a defense attorney. Experience on both sides of the aisle remains one of his greatest assets. “I was a prosecutor for eight years, so I do know both sides of the fence,” he says.
After leaving the DA’s Office, Esposito spent roughly three decades in private practice as a solo practitioner before joining Aidala, Bertuna & Kamins in 2019. Over the course of his career, he has handled a remarkable range of high-profile cases.
His résumé includes representation of William Rapetti in the New York City crane collapse homicide prosecution, William Tager in the NBC shooting and Dan Rather assault investigation, and Peter Guagenti in the Amy Fisher case. More recently, he worked alongside members of the firm on matters involving Harvey Weinstein and former New York City Mayor Rudy Giuliani.
Despite the headlines, Esposito says some of his most meaningful work has taken place far from the spotlight.
The Case That Meant the Most
Several years ago, the brother of Danny Galliano approached Esposito seeking help. Galliano had been convicted for a series of robberies committed as a young man struggling with drug addiction. Despite his original sentence, an appellate court determined that he qualified under New Jersey’s three-strikes law and imposed a life sentence without parole. “The notion that someone would be in jail as a 20-year-old for the rest of their life was something I simply couldn’t comprehend,” Esposito recalls.
Esposito took the case pro bono and spent years fighting for Galliano’s release. His persistence paid off when New Jersey Governor Phil Murphy granted Galliano a full commutation to time served. “The sentence was draconian in every possible respect,” Esposito says. “I find that to have been the most rewarding case I’ve dealt with recently, or perhaps in my whole career.”
A Defender of Due Process
That perspective reflects Esposito’s broader philosophy about criminal defense. Contrary to misconceptions, he says, defense attorneys are not simply advocates for guilt or innocence. Rather, they are guardians of due process and constitutional rights. “People often don’t understand what criminal defense attorneys do,” he says. “The Constitution provides that every person is presumed innocent. That may sound flowery to some people, but when you’ve represented individuals for 30 years, you realize how critical that principle is.”
For Esposito, every case contains a unique human story. Even after decades of practice, he remains fascinated by the individual circumstances that bring people into the justice system. “Each case has its own facts,” he says. “I find some worthiness in all individuals and all cases.” That mindset has allowed him to avoid the cynicism that can accompany a lifetime in criminal law. “Not getting totally jaded after 40 years is something that keeps me going,” he says.
A Firm Built on Advocacy and Trust
At Aidala, Bertuna & Kamins, Esposito found a firm that mirrors his own approach to advocacy. Though the firm is relatively small, he describes it as energetic, collaborative, and committed to its clients. “It’s a friendly, collegial type of firm, and that comes from the top,” he says.
The “top,” of course, is Arthur Aidala, whom Esposito has known for nearly 35 years. Their relationship dates back to Aidala’s law school days. “I was a criminal court supervisor in the Manhattan District Attorney’s Office when Arthur joined as a summer intern,” Esposito says.
Today, Esposito continues to handle major criminal matters while serving as Special Counsel to the New York State Court Officers Union. For all the notable clients, headline-grabbing cases, and courtroom victories, Esposito remains motivated by something much simpler: helping people when they need it most.
Whether representing a public figure, a court officer, or an incarcerated man seeking a second chance, he approaches each matter with the same commitment that has guided him throughout his career. For John Esposito, criminal defense is not merely a profession. It is a calling rooted in fairness, advocacy, and the belief that every person deserves a voice.
Disclaimer: The content in this article is provided for general knowledge. It does not constitute legal advice, and readers should seek advice from qualified legal professionals regarding particular cases or situations.
