From 1996–2002, he worked for ATCMHMR as a bilingual (Spanish-English) social worker who provided individual, family, and group therapy to youth who were suicidal, homicidal, or actively psychotic, involved with juvenile courts, at risk for being expelled from school, and those having substantive family conflict problems.

From 1997-2000, Jonathan was co-owner of a group therapy practice that specialized in providing conjoint family therapy and play therapy for children whose parents were going through divorce.

From 2002–2004, he was the lead therapist for Jewish Family Service and an adjunct instructor at the University of Texas at Austin School of Social Work. While at Jewish Family Service, he created and directed "The Parenting Center," a program that provided opportunities for unstructured networking and community-building for parents and children ages 0 to 3. In addition to providing individual and family counseling, he also led "Transparenting" workshops for parents going through divorce, a support group for single parents, and courses on ADHD, healthy relationships for teens, and resources for adoption.

As an adjunct at UT-Austin, Jonathan developed and taught the school's first Master's level Crisis Intervention course.

Jonathan is currently a doctoral student and teaching fellow at the school of social work at the University of Pittsburgh. He has 7 publications, including an article on culturally competent crisis intervention (Singer, 2005) and a chapter on social work and juvenile justice (Singer, 2007). His research interests include family-based interventions for youth who are suicidal, community mental health agency program evaluation, interventions with children and families, and dissemination of evidence-based practice. He hopes that the Social Work Podcast will become a widely used resource for the dissemination of a broad range of topics that social workers consider important.