One of the most critical issues of our time is sustainability. Simultaneously, techno optimism is prevailing in public discourse suggesting that technology will create a sustainable future without requiring drastic changes. Despite the connection that is often drawn between technology and sustainability and the presence of technologies in organisations, research combining the two concepts remains limited and does not account for the interplay of social values and technological artefacts. To overcome this incomplete picture of technology, this thesis employs sociomateriality to investigate how sustainability and technology are understood in relation to each other by young sustainability practitioners in for-profit organisations. Following t...