Jessica Markham practices all aspects of family law in Maryland and Washington, D.C. She has trial experience in Montgomery County, Prince George's County, Baltimore County and Washington D.C. courts and is also trained in Collaborative Law. Ms. Markham also handles guardianship matters and is frequently appointed by the Court as an attorney for Allegedly Disabled Adults and as Guardian of the Property. Ms. Markham has also been appointed by the court in Family Law matters as a Child Privilege attorney and a Best Interest Attorney (formerly Guardian Ad Litem).

Ms. Markham also has an active mediation practice, helping parties to resolve both custody and divorce/property disputes as a neutral. Ms. Markham frequently serves as a court appointed custody mediator in the Montgomery County Circuit Court Child Custody/Access Mediation Program and as an Attorney-Facilitator through Montgomery County Circuit Court, Family Division Services. Ms. Markham has been approved by the Maryland Administrative Office of the Courts as a Circuit Court Alternative Dispute Resolution Practitioner mediator and serves on the roster of court-approved divorce/property mediators in Montgomery County. Ms. Markham also mediates in the Family Mediation Program, Multi-Door Dispute Resolution Division of the DC Superior Court where she is currently participating in a study through the National Institute of Justice and Indiana University Maurer School of Law, mediating cases with parties reporting a high incidence of Interpersonal Violence, utilizing both shuttle and video-conferencing methods. Ms. Markham is also on the Court-Approved roster of ADR Facilitators in the DC Superior Court.

Ms. Markham recently concluded a term on the Montgomery County Commission for Juvenile Justice, having been appointed by County Executive Ike Leggett and confirmed by the County Council in 2015.