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Hello. I read your requirement carefully. I have interested in this project really.
As a mobile game developer, I have developed many games for Android and IOS in Unity3D (C#) for 4 years and have good knowledge of game development.
I know how to build high-quality games well to thanks for my experience to have built and updated many types of games.
My backend skills are Nodejs, MongoDB, PHP, MySQL and I have made the game servers with these skills in Amazon.
I also have experiences to integrate ADS and SNS, InAppPurchasing, Leaderboard, Online Game services like Gamesparks and Playfab, etc.
Please contact me anytime when you have interested in me.
Here is my portfolio.