Skip to main content

Sean Thomas Marcus

Criminal defense Attorney at Hialeah, FL

5.0   6 reviews
  • Licensed for 15 years
    State FL
    Acquired 2008
    Member in Good Standing No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Sean

Learn Sean’s areas of practice.

Practice areas
  1. Criminal defense
    Dedicated to providing an aggressive criminal defense in everything from DUIs and Misdemeanors, to Rape, Murder, and Aggravated Identity Theft, both in State and Federal criminal cases.

  2. DUI and DWI
    DUI law is a complex area of criminal defense, and not every attorney is capable of handling it. Having had our last 5 DUI motions in a row granted - resulting in dismissal of all charges - we take great pride in knowing the ins and outs of how to get your DUI case reduced or dismissed.

  3. Federal crime
    From Aggravated Identity Theft to Federal Healthcare Fraud, we use our experience to fight for you in Federal Court. While most defendants find that the deck seems stacked against the accused in Federal Court, Attorney Sean Marcus takes great pride in having obtained excellent results against the government, having had the Government either dismiss charges or decline prosecution in several cases.

  4. Litigation
    Involved in general civil litigation, including but not limited to civil rights violations, forfeitures, DV injunctions, Condo/HOA disputes, breach of contract, insurance litigation, employment/administrative law, evictions, and foreclosure defense.

Originally from Lauderhill, Florida, I am a South Florida native. I received my undergraduate degree magna cum laude from the University of Florida, and my law degree from the Maurer School of Law at Indiana University - Bloomington. During law school, I focused on my love for being in the courtroom, and decided to participate in activities which allowed me to foster my passion for litigation and criminal defense. During law school, I completed internships with the Miami-Dade, Bloomington, and Philadelphia Public Defender Offices, along with my involvement in Moot Court and a Law Journal.  


Following my graduation, I began my career at the Miami-Dade State Attorney's Office. As a junior prosecutor starting in the Misdemeanor domestic violence unit, I was the first in my class to secure a conviction and among the first in my class to be promoted to both the Juvenile and Felony divisions. As a felony prosecutor, I handled thousands of cases, and tried cases ranging from Narcotics Trafficking and Attempted Murder to Home Invasion Robbery and Organized Scheme to Defraud. Eventually, I was chosen as one of a select group of prosecutors to join the Career Criminal/Robbery Division - prosecuting the most violent repeat offenders in Miami. The cases I dealt with were generally serious offenders, with extremely serious cases: mostly Robbery, Carjacking, and Murder (and attempts).  Almost every case involved significant minimum mandatories - as such, most cases went to trial. 


After leaving the Miami State Attorney's Office, I initially worked at a small litigation firm doing complex civil and business litigation. In that role, I worked on everything from Insurance Disputes, to Condo/HOA regulations, to Litigation involving mixed-use condo/hotels, to breach of contract and Federal cases involving Aviation law and oil liens.


After working in the civil field, I turned back to criminal defense. I became the Senior Criminal Attorney for a prominent Broward County firm. In that capacity, I spearheaded the firm’s Criminal Department, handling cases from DUI and Domestic Violence to Murder, Drug Trafficking, and Federal Healthcare Fraud - from intake through trial. Additionally, I used my civil litigation experience to assist clients in various civil litigation matters, including asset forfeitures, nuisance abatement hearings, internal affairs investigations (for government employees), Marchman Acts, and Domestic Violence Injunctions.


After several years working as the Senior Criminal Attorney, I left to open the Law Offices of Sean Marcus, PLLC. Using my years of experience gained working both as a criminal defense attorney and as a prosecutor, I know how the State and Federal Government build their cases, and how best to take those cases apart and poke holes in the prosecution’s theory of the case. I use my years of work on thousands of cases, to provide the most aggressive and thorough defense to fight for each of my clients.


When I started this firm, I decided that I wanted a practice that focuses on the client's needs and goals - that focuses on what is going on in my client's life, and what decisions are best given their current situation. I take great pride in my work - whether I'm working on a minor possession of marijuana charge, a Federal Healthcare Fraud case, a DV Injunction, or an eviction. I believe that if you trust me to handle your case, you deserve the best from me. Period. I am dedicated to making sure I get the best results for each and every client, focusing on each client’s very specific and unique needs and goals. And if you feel that I haven't lived up to your expectations, I want you to call me directly, on my cell at. I look forward to working with you. 


The Law Offices of Sean Marcus, PLLC
7600 W. 20th Avenue
Suite 220
Hialeah, FL, 33016
The Law Offices of Sean Marcus, PLLC
7305 W. Sample Road
Suite 109
Coral Springs, FL, 33065
Hide locations

Criminal Defense lawyers nearby


5.0 / 5.0
  6 customer reviews
5 Star
4 Star
3 Star
2 Star
1 Star
Posted by Kimberly | August 19, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Best criminal defence attorney!
Sean did an excellent job defending my Son on a very serious case. He was objective, assertive and professional in his defence. If you want to win, hire this very excellent, thorough attorney.
Posted by Seriocha | December 3, 2017
This review is from a person who hired this attorney.
| Hired Attorney
I'm thankful to sean because first he was able to drop my charges and secound of all he was able to terminate my probation. So i would definetly recommend him to represent anyone.
Posted by anonymous | February 9, 2017
This review is from a person who hired this attorney.
| Hired Attorney
A highly recommended lawyer
Sean helped me with a very difficult case that took a very long time to resolve but he was extremely thorough both in gathering facts and researching the entire case. He was patient, aggressive when needed and always professional. I knew I was in very capable hands once we started working together and would recommend him very highly .Because of him, my name was cleared after a false accusation and I am in debt to him for believing in me and proving the truth.
Read less
Posted by Mark | September 15, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Best results for a bad situation.
Hello, Sean provided us with the best results possible for our unfortunate DOJ case. He was thorough and completely competent in all aspects. Hopefully this is the first and last exercise of this kind but we were completely satisfied with Sean's work. Data Freight Corporation Mark.L
Posted by Jeanette | September 6, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Mr. Marcus was extremely helpful and professional. He gave me the guidance I needed to get my case dropped in very little time. He advised me of every situation that could arise and assured me how it should be handled. He spent time explaining how things would work so there were no surprises. I have referred him to a few people and they are also satisfied. If your looking for an attorney who is professional and knowledgeable he is the one!
Read less
Posted by stan | August 31, 2016
This review is from a person who hired this attorney.
| Hired Attorney
excellent research and followup
Sean Marcus defended me against the state on a charge that few believed I could win. With much research, creativity and expertise he had me free of all charges The prosecution was scratching their heads and doing extra research in the court room in an effort to find precedence to obtain a conviction to no avail. I highly recommend Mr. Marcus.
Read less
View less reviews


  • Free Consultation 60 minutes
Payment methods
Cash, Check, Credit Card


AVVO RATING 9.3 (Superb)

Work Experience

  • Managing Partner
  • The Law Offices of Sean Marcus, PLLC
  • 2016 - Present
  • Senior Criminal Attorney
  • Glantz & Glantz
  • 2013 - 2016
  • Associate
  • The Law Offices of David B. Haber
  • 2012 - 2013
  • Assistant State Attorney
  • Miami Dade State Attorney's Office
  • 2008 - 2012
  • Intern
  • Monroe County Public Defender's Office
  • 2008 - 2008
  • Law Intern
  • Defender Association Of Philadelphia
  • 2007 - 2007
  • Intern
  • Miami Dade Public Defender's Office
  • 2006 - 2006
View all work experience


  • Indiana University School of Law.Bloomington
  • Doctor of Jurisprudence/Juris Doctor
  • 2008
  • University of Florida
  • BA - Bachelor of Arts
  • 2005

Sample of Legal Cases

  • 14-035203MU10A
  • All Charges Dropped
  • 14-037689MU10A
  • Charges Dropped
  • 8092GXB and B14-31265
  • All Charges Dropped
View all legal cases


  • Broward Association of Criminal Defense Lawyers
  • 2015 - Present
  • Florida Association of Criminal Defense Lawyers (Miami chapter)
  • 2013 - Present
  • League of Prosecutors
  • 2013 - 2014

Languages Spoken

  • English
  • Spanish

Honors and Awards

  • 10 Best Attorneys
  • American Institute of Criminal Law Attorneys
  • 2018
  • Top 100 Criminal Defense Lawyers
  • The National Trial Lawyers
  • 2017

Attorney endorsements

Received (3)
Given (2)
Endorse Sean
Criminal defense Attorney | Oct 31
Relationship: Worked together on matter
"It is without reservation that I endorse Mr. Sean Marcus. He is fair, diligent and easy to work with. He advocates zealously for his clients and gives his full attention to their cases. In working with opposing counsel, he is honest and reasonable. He is deferential to the Court and makes precise and complete arguments. The legal field is better, because Mr. Marcus is a member of it."
Criminal defense Attorney | Aug 29
Relationship: Co-worker
"Sean Marcus is an exemplary trial lawyer. He has a knowledgeable command of the law and is a noticeable presence in any courtroom. Mr. Marcus is not afraid to zealously represent his clients with integrity and poise. He has the know-how and the experience to get the job done. I am proud to endorse my colleague and friend Sean Marcus."
Criminal defense Attorney | Aug 29
Relationship: Worked together on matter
"I have referred multiple clients to Mr. Marcus and have always been pleased and impressed with his legal prowess and the time and effort he devotes to each of his clients."