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About Melissa

Ms.Derby graduated cum laude from the Duquesne University School of Law and was admitted to practice in the Commonwealth of Pennsylvania in 2013. She has been with Welch, Gold, Siegel and Fiffik, P.C., since February 2015. Her practice primarily focuses on criminal defense of adult and juvenile defendants, general civil litigation, and real estate. Melissa is also certified by Westlaw in advanced case law research. A member of the Allegheny County Bar Association, Melissa is also a member of its Young Lawyers Division and Criminal Law section. She volunteers annually at Duquesne University to judge first-year law students’ oral arguments. She performs pro bono work in her community by accepting court appointments from the Allegheny County criminal courts and providing pro bono expungement services via the Neighborhood Legal Services Association expungement project.In 2018, Melissa was chosen from among thousands of attorneys as a Pennsylvania Super Lawyer -- Rising Star, which placed her in the top 2.5 percent of attorneys in Pennsylvania who are 40 or younger.

Areas of Practice

Criminal, Juvenile, Traffic.


  • Law Review-Duquesne University School of Law 2009 – 2011
  • CALI Excellence Award 2010
  • Alternative Dispute Resolution 2010
  • Alpha Phi Sigma National Criminal Justice Honor Society


  • Allegheny County Bar Association