PurposeLiterature reveals ongoing debates around the role of business analysts in agile software development (ASD) teams. This can be attributed, in part, to a knowledge gap concerning how business analysts contribute to overall team capabilities, particularly those which are essential in enabling teams to respond to fast-paced environmental changes. The purpose of this study was to address this gap by investigating how business analysts (BAs) contribute to the dynamic capabilities of ASD teams.Design/methodology/approachThrough a deductive approach, this study adapted and applied a research model based on the team dynamic capabilities (DC) theory to explore the contributions of BAs in agile teams. The study was executed using a qualitative, single case study research strategy directed at an ASD team in the financial services industry. Moreover, data were collected through face-to-face, semi-structured interviews; a focus group; non-participant observation and physical artefacts review. The thematic analysis technique was used to analyse the data.FindingsThe study contributes to teams DC theory through four theoretical propositions centred on the role of BAs. The proposition highlights how BAs relationship management, tacit knowledge sharing, task mental models and transactive memory are key contributors of ASD teams' DC. The study also found that BAs contribute to ASD teams' ability to embrace agile principles 2, 4, 6 and 12. This study can inform the design of capacity development programmes for individual team members and BAs and thus help managers curate teams that will best promote DC.Practical implicationsThis study can inform the design of capacity development programmes for individual team members and BAs and thus help managers curate teams that will best promote DC.Originality/valueThis study builds on the relatively few studies which focus on DC within software development (SD) teams and ASD project teams. Moreover, the study explores how an individual (i.e. a BA) can contribute to the DC of a team.