Takumi Hatakeyama is a Nintendo planner working at Nintendo Software Planning and Development. He was hired in 2006.
Prior to joining Nintendo, Takumi Hatakeyama was an avid gamer who became interested in joining the industry after recording countless hours in the Super Nintendo Entertainment System classic Mario Paint. After joining the company, his first credited project was the Nintendo DS Digital TV Tuner. He later assisted in the development of WarioWare D.I.Y. for the Nintendo DS with programming. He has quickly gone up in the ranks, assisting in development of Game & Wario and Rhythm Heaven Megamix.
Iwata Asks: WarioWare DIY
Nintendo 2012 Recruit Interview