Your Former Prosecutor.
Now Your Defense.

Derek Oliverson spent years on the other side — as a police officer, prosecutor, and judge. Now he uses that experience to dismantle the prosecution’s case and defend your future.

Derek Oliverson - Criminal Defense Attorney Tempe Arizona

Founder & Lead Attorney

Derek Oliverson founded Oliverson Law in 2009 with a single mission: give people facing criminal charges the same aggressive, tactical defense that was once used against them.

Before becoming a defense attorney, Derek served as a police officer, prosecutor, and judge. That rare combination means he’s sat in every chair in the courtroom — and he knows exactly how the other side thinks, builds cases, and makes decisions.

Over 17 years, Derek has personally handled more than 5,000 criminal and DUI cases across Arizona. He knows the prosecutors in Maricopa County, the judges in Tempe Municipal Court, and the procedures in every jurisdiction from Phoenix to Kingman.

Derek doesn’t hand your case to a junior associate. He answers his own phone. He returns calls the same day. And he fights like your future depends on it — because it does.

The Record Speaks for Itself.

Results earned in Arizona courtrooms — not marketing claims.

17+
Years Defending
Arizona Residents
5,000+
Criminal & DUI
Cases Handled
15
Arizona Counties
Covered
4
Office Locations
Across Arizona

When Things Are Bad,
You Need the Best.

Unlike solo practitioners, Oliverson Law brings a team of former judges, prosecutors, and police officers to your defense.

Derek Oliverson

Founder & Lead Attorney

Former police officer, prosecutor, and judge with 17+ years of criminal defense experience. Derek personally handles every case and is available to clients 24/7 via his personal cell phone.

David Tangren

Partner

A seasoned criminal defense attorney who brings decades of courtroom experience to the firm. David’s background in prosecution gives him unique insight into building winning defense strategies across Arizona courts.

Chelsea Pajak

Paralegal

Chelsea manages case files, court filings, and client communications with precision. She ensures every document is prepared accurately and every deadline is met — keeping your defense on track from start to finish.

What We Stand For.

Integrity

Honesty, transparency, and accountability in everything we do.

Commitment

Unwavering support for our clients from arraignment to resolution.

Respect

Treating every client with dignity and compassion — no judgment, no exceptions.

Excellence

Meticulous preparation and aggressive advocacy in every single case.

Community

Dedicated to serving all 15 Arizona counties — urban, suburban, and rural.

Award-Winning Criminal Defense

Recognized excellence across Arizona courtrooms.

NACDA Top 10
Avvo Rated
BBB Accredited
Expertise Best DUI Lawyers
NACDA Top 40 Under 40
NADC
ASLA
AATA

Ready to Fight Your Charges?

Call Derek directly for a free, confidential case evaluation. Available 24/7.

(480) 582-3637
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