Worked on the sp-tarkov/server-csharp repository to enhance trader-related game mechanics by introducing support for fractional quantities in the TraderSptCommand class. This was achieved by refactoring the quantity field from an integer to a double, enabling more precise operations and laying the groundwork for future extensibility in backend systems. The update improves data integrity and allows for nuanced handling of trader commands, which is essential for evolving game features. The work was implemented using C# and focused on backend development within a game development context, demonstrating attention to both technical detail and the broader business value of scalable system design.