Sara Alissa and Nojoud Alsudairi cofounded Syn Architects in 2018, an interdisciplinary Riyadh-based practice with a focus on ecologically sensitive architectural design projects. Their projects include the award-winning Shamalat Cultural Center in Riyadh, a cultural space on the periphery of Diriyah developed through the adaptive reuse of a mud house. Alissa and Alsudairi are the cofounders of SaudiArchitecture.org, an independent organization that aims to research and archive modernist and postmodernist buildings in Saudi Arabia. In 2021, they launched the Um Slaim Collective, a critical investigation of the changing condition of vernacular Najdi architecture in central Riyadh, which was presented as The Um Slaim School: An Architecture of Connection, the Saudi National Pavilion at the Biennale Architettura 2025, realized with the support of Syn Architects design manager Abdullah AlYahya.