I am currently a game developer with SEGA Networks, Inc.--the Western division of SEGA's mobile development arm. I am a veteran game developer with more than a decade of game dev experience, and have experience with iOS, Android, and Unity in particular. My name can be found in the credits of Marvel Puzzle Quest for both iOS and Android, which has been downloaded by millions, as well in the credits for Pulsen, a rhythm and music game which was published to Steam last year.
I'm looking to find additional game development part-time, and so I can certainly take on this job for you. Realistically, Unity can be used to create the game you're looking to build, but the entire project is somewhat large, so has a realistic timeframe of six months, or less, depending on the specific details. Please follow up if you need additional information. I have experience in delivering large projects successfully for high-profile clients, as well as developing large game engines and the necessary server-side code. I do seem to be a perfect candidate for the job.
I've added a summed-up milestone outline below, which is likely to change, depending on the exact specifications of the project.
Thanks, and all the best,
James