LefflerPhillips | Fairfax & Northern Virginia’s Best Lawyers

Meet Our Lawyers

Jennifer Leffler

Jennifer Leffler is an experienced trial lawyer who has tried hundreds of criminal and civil cases in state courts throughout Northern Virginia. She is a former prosecutor, Assistant Commonwealth’s Attorney for Fairfax County. In addition to her defense and prosecutorial experience, Ms. Leffler also served as a judicial law clerk in the Fairfax County Circuit Court. Ms. Leffler routinely handles criminal and traffic matters, protective orders, expungements, personal injury matters, and police investigations. She has been named a Top Lawyer by Washingtonian Magazine, a Rising Star by SuperLawyers, and included in the 2025 Edition of Best Lawyers in Criminal Defense: General Practice and White-Collar. Ms. Leffler’s extraordinary ability to connect with her clients makes her a meaningful and effective advocate. Her enthusiasm, confidence, and extensive experience in the courthouse has led her to develop creative approaches to resolving the most challenging cases. While Ms. Leffler believes in fostering and maintaining amicable relationships with opposing counsel, she also believes that the best defense is a good offense. Outside the office, she enjoys early morning runs and cooking for her family.

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Jonathan L. Phillips

Jonathan Phillips is an experienced trial lawyer who has tried hundreds of criminal and civil cases in state and federal courts throughout Virginia. He is a former prosecutor, Assistant Commonwealth’s Attorney for Fairfax County, and clerical intern to the Honorable Barbara Milano Keenan. Mr. Phillips routinely handles adult and juvenile criminal and traffic matters, police investigations, expungements, professional liability matters, serious personal injury matters, and protective orders. He has been named a Top Lawyer by both Washingtonian and Northern Virginia Magazine, recognized by Virginia Super Lawyers, and included in the 2025 Edition of Best Lawyers in Criminal Defense: General Practice and White-Collar. With his extensive IT background, Mr. Phillips is a unique and adept lawyer, particularly recognized as an industry leader in criminal cases involving computer forensics. His extensive experience, ingenuity, and charisma have gained Mr. Phillips an eminent and well-respected reputation both inside and outside the courtroom. Outside the office, he enjoys making good wine, traveling to new destinations, and seeking out the newest roller coaster.

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Jennifer Leffler is an exceptional Lawyer. The best Lawyer in Northern Virginia! Let me Start by saying Jennifer WON another case. I had an arrest last year for a DUI. A friend of mine, who had won a case with Jennifer recommended her. I would absolutely recommend Jennifer to any person who may find themselves in a legal situation.

Client Review from Google

Jennifer Leffler is one of the best attorneys I have been represented by personally. She represented me in a protective order hearing in which false allegations were accused against me. I felt very overwhelmed about my case because I felt in the wrong before it had started but she came into court aggressive and prepared. In which she ended up dismissing both cases filed against me. 10/10 law firm.

Client Review from Google

From the first consultation all the way through my case's closing, Ms. Leffler's legal advice was sound and wholly helpful; she was available, smart and straightforward... [and] resulted in an overall very favorable outcome for me that makes me fully confident in recommending her to those in need of an attorney.

Client Review from Avvo.com

I was facing four serious felony charges in Fairfax County. Mr. Phillips expertise, guidance, and counsel assisted me in obtaining a very favorable outcome. Mr. Phillips was always prepared, organized, and so easy to contact. He helped me understand the court process and literally helped keep me sane through the entire process.

Client Review from Avvo.com

I recently had a civil issue which could have jeopardized my job and livelihood. Needless to say, I needed great legal representation to protect myself and family. As a result of Jonathan Phillips efforts, the verdict turned out in my favor and I was able to put this horrific incident behind me.

Client Review from Avvo.com