Worked on mobile casual games in match-3, merge and idle genres using Unity and C#. Developed tile interaction logic, match detection systems, combo calculation, boosters, reward systems, and level progression mechanic for match-3 projects. Implemented drag-and-drop merge systems, item state handling, production timers, unlock progression, and economy balancing for merge games. Developed idle game mechanics including passive income calculation, offline rewards, upgrade systems, and automated production flows. Developed reusable UI systems, popup systems, in-game shop flows, quest systems, save/load pipelines, and monetization features. Integrated Firebase, Ads SDKs, analytics tools, and REST API services. Refactored and maintained existing systems, improved project architecture, and optimized mobile applications.