His current book project, Everyday Life and Everyday Death in El Salvador, traces the practices of peoplehood, community formation, and everyday life-making amongst varied groups in El Salvador since the end of the Salvadoran Civil War. This work explores the quotidian modes of living, thinking, and being produced by historical inequality, the postwar Salvadoran state, and by structural shifts in the transnational system. A multi-sited study, Cuéllar's research attends to the cultural and political strategies employed by in-country Salvadorans that, despite living in conditions of extreme marginality, economic abandonment and routine violence, engage in practices of refusal, survivance and critique that motion towards restored and dignified social futures.

Cuéllar's writing has appeared in American Indian Culture and Research Journal, Comparative American Studies, Diálogo, Revue française d’études américaines, Soccer & Society, and is forthcoming in Latino Studies, Radical History Review, and others. His public essays and columns appear in El Faro, NACLA, Social Text's Periscope, Los Angeles Review of Books, NLR's Sidecar and Radical History Review's The Abusable Past.