Background. The COVID-19 pandemic triggered a widespread transition to hybrid work models (combinations of co-located and remote work) as software professionals’ demanded more flexibility and improved work-life balance. However, hybrid work models reduce the spontaneous, informal face-to-face interactions that promote group maturation, cohesion, and resilience. Little is known about how software companies can successfully transition to a hybrid workforce or the factors influencing the resilience of hybrid software development teams. Goal. The purpose of this study is to explore the relationship between hybrid work and team resilience in software development. Method. Constructivist Grounded Theory was used, based on interviews with 26 software professionals. This sample included professionals of different genders, ethnicities, sexual orientations, and experience levels. Interviewees came from eight different companies, 22 different projects, and four countries. Consistent with grounded theory methodology, data collection and analysis were conducted iteratively, in waves, using theoretical sampling, constant comparison, and initial, focused, and theoretical coding. Results. Resilience is the capacity of software teams to withstand or recover from adverse events during software development. Nowadays, software teams strongly depend on resilience to maintain their performance in the face of several unfavorable situations caused by the hybrid environment and its numerous configurations. Five factors are interrelated to resilience in this context: Belonging, Proactiveness, Conflict management, Organizational support, and Diversity. Conclusion. This paper presents the first study on the resilience of hybrid software teams. Software teams need resilience to maintain their performance in the face of disruptions and crises. Software professionals strongly value hybrid work; therefore, team resilience is a crucial factor to be considered in the software industry.