No Associates, No Handoffs: Roberto Ambrosino Built a One-Man Criminal-Defense Firm

Being arrested creates enough uncertainty without having to wonder who will actually handle the case. A prospective client may meet with one lawyer, sign an agreement, and later discover that the work has been passed to someone else. At the Law Office of Roberto Ambrosino, the answer is unusually simple: Roberto Ambrosino handles it himself.

Ambrosino has built what amounts to a one-man criminal-defense operation—no associates, no handoffs, and no confusion about who is responsible. He personally manages each case from its initial evaluation through resolution. What makes that model particularly impressive is its scale: he has handled thousands of criminal matters across more than 40 Texas counties while continuing to place his own name and judgment behind every defense.

His decision to practice this way grew from an early encounter with the damage unreliable evidence can cause. Before establishing his firm in 2009, Ambrosino worked at a civil-rights law office on cases involving erroneous positive drug-test results produced by the Bexar County Probation Department and its contracted laboratory. A flawed test could threaten someone’s freedom, employment, and future. That experience helped push him toward a career defending people against the power of the criminal-justice system.

The commitment began even earlier. While attending Texas Tech University School of Law on scholarship, Ambrosino interned with the Innocence Project of Texas, examining claims from incarcerated people who maintained they had been wrongfully convicted. He also represented clients in court through Legal Aid of NorthWest Texas before graduating. From the beginning, his training centered on what happens when an accusation, test result, or official conclusion deserves closer scrutiny.

That experience became visible in a Bexar County courtroom in 2025. Ambrosino defended a client facing a felony charge involving an allegedly fraudulent check. After taking the case through a two-day jury trial in the 187th District Court, he secured a not-guilty verdict. The proceedings were preserved through courtroom video, offering a rare public look at Ambrosino doing the work that matters most in criminal defense: questioning the prosecution’s proof before a jury empowered to reject it.

The acquittal is part of a broader record of meaningful outcomes. Ambrosino has obtained rejection of an aggravated-sexual-assault-of-a-child allegation, dismissal of a DWI charge involving a child passenger, and dismissal of an assault-family-violence case. He has also secured a deferred resolution in an aggravated-robbery matter and reductions of aggravated-assault-with-a-deadly-weapon and child-endangerment charges. In another case, his challenge to the prosecution’s evidence produced an immediate motion to suppress and dismissal.

Past outcomes never guarantee what will happen in another case, but these results demonstrate range. Ambrosino has changed the direction of cases through jury advocacy, evidentiary challenges, negotiations, dismissals, reductions, and diversion—each requiring a different kind of judgment.

Professional and public recognition reinforce that record. Ambrosino was selected to the Texas Rising Stars list for six consecutive years from 2018 through 2023 and was included among San Antonio Magazine’s Top Attorneys in 2019 and 2020. He has also joined Judge Ron Rangel for a detailed discussion of expunctions and record sealing, helping explain how people may move forward after a criminal case. His 4.9-star Google rating based on 152 reviews adds substantial consumer validation.

Roberto Ambrosino’s defining value is personal accountability. The lawyer a client hires is the lawyer who studies the evidence, communicates about the case, enters the courtroom, and remains responsible for the outcome. For someone facing a criminal accusation, having that one-man army fully engaged in the defense may provide exactly the clarity and confidence the moment demands.

That combination of experience, reputation, verified professional standing, and public credibility is why Roberto Ambrosino Jr. was included on FreddieFender.com.