ShiftSL is a dynamic scheduling system designed to address the critical inefficiencies in roster and leave management within Sri Lanka’s healthcare sector. It provides a web dashboard for Ward Administrators and a mobile app for healthcare staff, streamlining communication, roster generation, and shift management. Currently, hospitals rely on outdated methods such as Excel sheets and WhatsApp groups to assign shifts and handle last-minute replacements. This process is not only error-prone but also places a massive burden on administrators, who must manually coordinate with staff to fill in gaps. It also contributes to staff burnout, as doctors and nurses are often required to find their own replacements or cover additional shifts due to poor coordination. ShiftSL solves this by allowing staff to update their availability and shift preferences through a user-friendly mobile app. Administrators can then automatically generate optimized rosters through the dashboard. The system also includes a smart leave management feature that sends notifications when a shift becomes available, assigns replacements based on suitability, and even splits shifts if no full replacement is found. Beyond healthcare, ShiftSL can be extended to other service-based industries such as hotels, ports, and airports, where shift-based work is essential and manual scheduling leads to similar issues. By digitizing the scheduling process, ShiftSL improves operational efficiency, reduces administrative stress, and enhances employee well-being—making it a vital tool across multiple industries.