Purpose: Research has shown that the problem-solving skills of adults with a vocational education and training (VET) background in technology-rich environments (TREs) are often inadequate. However, some adults with a VET background do have sound problem-solving skills. The present study aims to provide insight into the socio-demographic, work-related and everyday life factors that are associated with a strong problem-solving performance. Design/methodology/approach: The study builds on large-scale data of the Programme for the International Assessment of Adult Competencies (PIAAC) and gives insight into VET adults (N = 12,929) with strong problem-solving skills in 11 European countries. Findings: This study introduces new knowledge with respect to the socio-demographic, work-related and everyday life background factors that contribute to successful VET adults' problem-solving skills. The findings of the authors illustrate that a continuous process of development including non-formal and informal activity, as well as learning taking place at work, is associated with strong performance in problem-solving skills in TRE. Research limitations/implications: An important implication of this study is that this paper introduces novel knowledge for VET adults' competences and can be used to support the development of VET adults' problem-solving skills in TREs. Originality/value: The study was conducted to explore new understanding about good problem-solvers in TREs with a VET background. The originality of the study derives from its focus on good problem-solvers in TREs related to a VET background. The findings can be used to create novel ways to enhance the development of VET adults' problem-solving skills in TREs.