Andrew Olesnycky, Criminal Defense Attorney in Mountainside, New Jersey
focused on Criminal Defense and White Collar
Mountainside, NJ
Trusted criminal defense attorney serving Mountainside.
Practices in
Are you Andrew Olesnycky?
This profile was built from public bar records and is still unclaimed. Claim it free to control your photo, bio, and fees — and get client inquiries sent straight to you.
Quick answer
Andrew Olesnycky is an attorney based in Mountainside, NEW JERSEY. The practice focuses on Criminal Defense and White Collar.
- Based in
- Mountainside, NEW JERSEY
- Experience
- attorney
- Known for
- Criminal Defense · White Collar
- Handles Criminal Defense and White Collar matters from Mountainside, NEW JERSEY.
- Recognized with Best Lawyers in America — Criminal Defense: General Practice (2026).
About Andrew Olesnycky: Andrew Olesnycky is an attorney based in Mountainside, NEW JERSEY. The practice focuses on Criminal Defense and White Collar.
Areas of practice
Practice areas handled by Andrew Olesnycky
Andrew concentrates on criminal defense and white collar. Each area below outlines the kind of case Andrew handles, typical outcomes to expect, and how the intake process starts.
Criminal Defense cases in Mountainside, New Jersey
Andrew takes criminal defense matters in Mountainside, New Jersey. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Andrew agrees to represent you.
White Collar cases in Mountainside, New Jersey
Andrew takes white collar matters in Mountainside, New Jersey. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Andrew agrees to represent you.
Biography
About Andrew Olesnycky — Attorney of New Jersey criminal defense experience
Andrew Olesnycky is an attorney based in Mountainside, NEW JERSEY. The practice focuses on Criminal Defense and White Collar.
Andrew Olesnycky, a former supervisor-level assistant prosecutor at the Union County Prosecutor’s Office, represents individuals and organizations facing criminal charges and investigations in federal, state, and municipal courts. Mr. Olesnycky has served as lead attorney representing defendants in federal and state cases alleging multi-million dollar fraud conspiracies, money laundering, complex multi-defendant drug distribution conspiracies, arson, sexual assault, child pornography, interference with custody, domestic violence, invasion of privacy (i.e. revenge porn) and more. A list of representative cases can be found below.
Mr. Olesnycky is certified by the New Jersey Supreme Court as a Certified Criminal Trial Attorney, a designation obtained by fewer than 1% of attorneys state-wide.
Mr. Olesnycky maintains a robust federal criminal defense practice and has been appointed by the District of New Jersey to serve on the Criminal Justice Act Panel of Private Attorneys. He has represented professionals and accused leaders of criminal enterprises in diverse federal prosecutions including wire fraud, public benefits fraud, bank fraud, drug trafficking, computer crimes, and child pornography.
During his nearly five-year tenure with the Union County Prosecutor’s Office, Mr. Olesnycky tried numerous felony cases involving robbery, aggravated assault, gun possession, narcotics offenses, large-scale theft, and fraud. His trials and prosecutions have been covered by media outlets including the New York Times, CBS This Morning, NBC4 New York, the Associated Press, the Boston Globe, NJ.com, the Star Ledger, and ESPN. Through diligence, creativity, and aggressive litigation, he has secured a number of excellent outcomes for his clients.
Mr. Olesnycky is also one of very few criminal trial attorneys in private practice who has served as a domestic violence supervisor in a county prosecutor’s office, and represents those accused of domestic violence in criminal, civil, and administrative proceedings, as well as victims of domestic violence seeking restraining orders in family court. As a supervisor, Mr. Olesnycky bore ultimate responsibility for the investigation and prosecution of every complaint of domestic violence in Union County. As a supervising assistant prosecutor in Union County, Mr. Olesnycky was responsible for training new assistant prosecutors; supervising all investigations, indictments and trials within the Domestic Violence unit; coordinating rearming decisions for police officers accused of domestic violence; administering a 24-hour on-call domestic violence hotline for police officers; and training police officers in domestic violence law.
As a certified domestic violence law instructor at the John H. Stamler Police Academy, Mr. Olesnycky has lectured on criminal law to new recruits as well as experienced investigators from law enforcement agencies throughout the state. He has served as a moderator of a statewide domestic violence symposium and attended domestic-violence specific training at state and national conferences.
A cum laude graduate of the Rutgers School of Law in Newark, Mr. Olesnycky served as a law clerk to the Honorable Rudy B. Coleman (retired) in the Appellate Division of New Jersey Superior Court, and as an intern for the Honorable Joseph A. Greenaway in the United States District Court for the District of New Jersey. During law school, Mr. Olesnycky worked as a summer associate at Latham Watkins in Newark and as an intern in the legal department of the New Jersey Highlands Council.
Mr. Olesnycky served as a member of the District VC (West Essex) Attorney Ethics Panel.
How Andrew handles criminal defense matters
Andrew Olesnycky, a former supervisor-level assistant prosecutor at the Union County Prosecutor’s Office, represents individuals and organizations facing criminal charges and investigations in federal, state, and municipal courts. Mr. Olesnycky has served as lead attorney representing defendants in federal and state cases alleging multi-million dollar fraud conspiracies, money laundering, complex…
Who Andrew represents
Andrew reviews new inquiries case-by-case for criminal defense and white collar matters in Mountainside and the surrounding New Jersey area.
Credentials
Andrew Olesnycky's legal education and bar admissions
Rutgers University–Newark
J.D. · 2009
Andrew studied at J.D. in Rutgers University–Newark.
Law school and academic background
Andrew completed J.D. in Rutgers University–Newark. Formal legal training is one signal of substantive knowledge — the day-to-day practice Andrew runs in New Jersey is where that training gets applied to real client questions.
Recognition
Awards, publications, and recognition of Andrew Olesnycky
Andrew has received 2 formal recognitions from bar associations, industry bodies, and peer-review services.
Best Lawyers in America — Criminal Defense: General Practice
2026
Best Lawyers in America — Criminal Defense: White-Collar
2026
Legal awards and honors
Best Lawyers in America — Criminal Defense: General Practice (2026). Best Lawyers in America — Criminal Defense: White-Collar (2026).
Locations
Andrew Olesnycky's office in Mountainside
Andrew's primary office is at 200 Sheffield Street, Suite 212, Mountainside, New Jersey, 07092. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Andrew Olesnycky
Andrew has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
No reviews yet
Only verified clients who have consulted with Andrew Olesnycky can leave a review.
Schedule your consultationHiring guide
How to hire Andrew Olesnycky — what to expect in your first consultation
Working with a new criminal defense attorney should feel structured. Here's how the first two conversations with Andrew usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Andrew charges for the initial consult. That fee is credited toward representation if you retain Andrew's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Andrew will tell you what matters and what doesn't.
Questions to ask a criminal defense attorney in Mountainside, New Jersey
A short list to run through before you commit: How many criminal defense matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for Andrew
Andrew discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in criminal defense practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every criminal defense matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Andrew confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Andrew's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many criminal defense practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Andrew Olesnycky
How much does it cost to hire Andrew for a criminal defense case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Andrew walks through the likely range during the consult so there are no surprises.
Does Andrew offer a free consultation?
Andrew charges for the initial consult; that fee is credited toward representation if you retain Andrew's office. Some criminal defense attorneys offer free consults — check Andrew's current terms during booking.
How long do criminal defense cases in New Jersey typically take?
Simple criminal defense matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Andrew gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Andrew take my case if I'm outside Mountainside?
Andrew is licensed in New Jersey. Matters governed by New Jersey law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Andrew will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with Andrew?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Andrew will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Andrew accepting new criminal defense clients right now?
Andrew's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Criminal Defense attorneys serving Mountainside, Trenton and Newark in New Jersey
Andrew handles criminal defense matters throughout New Jersey. Each city below is a direct link into the search page for verified criminal defense attorneys in that community.
More counsel
Other top-rated criminal defense attorneys in New Jersey
If Andrew's intake is full or the fit isn't right, these criminal defense attorneys in Mountainside handle similar matters. Every profile below is verified and open to consultations.

Vincas (Vince) M. Vyzas
Jersey City, New Jersey
5.0· 57

Eric B. Morrell
New Brunswick, New Jersey
5.0· 53

Leon Matchin
New Brunswick, New Jersey
5.0· 40

Donald A. DiGioia
Mountainside, New Jersey
5.0· 34

Christopher G. Aiello, Esq.
Watchung, New Jersey
5.0· 30

Melissa Rosenblum (Pisetzner)
Pleasantville, New Jersey
5.0· 26