In recent years, Brazil has experienced a growing frequency of natural disasters, particularly those triggered by intense rainfall and unregulated urban expansion in geotechnically vulnerable areas. This scenario highlights the urgent need for educational and participatory strategies aimed at disaster risk reduction and the promotion of resilient communities. This article presents a case study of the Geotechnical Study Group (GEGEO), an outreach initiative based at the Federal University of Paraná (UFPR), which developed a series of actions between 2020 and 2023 to raise awareness about geotechnical and environmental risks. The initiatives included a Massive Open Online Course (MOOC), in-person educational workshops, and participatory risk mapping in collaboration with public schools and local communities. The study employed a qualitative approach to analyze the effectiveness of these activities in fostering civic responsibility and disaster preparedness. Results indicate that participatory methodologies—grounded in dialogical education and contextualized technical knowledge—enhanced community engagement and contributed to the co-production of localized risk management tools. Moreover, the integration of teaching, research, and extension proved to be a powerful strategy for promoting socially engaged engineering education. The outcomes reinforce the relevance of university extension programs as instruments for risk mitigation, educational innovation, and community empowerment in areas exposed to geotechnical hazards.