Hal Seki has been working as a Geo Developer since 2002. He is a CEO of Georepublic Japan, which is providing location based system consulting/developing services, as well as a representative of Code for Japan. He is well known as a community manager for solving social issues in Japan. Also, He is entitled as Ushahidi Certificated Developer since he has been a managing director of Sinsai.info, a cloud sourcing crisis information collecting platform using Ushahidi since 2010, the Great East Japan Earthquake occurred. He is also a member of Open Knowledge of Foundation Japan and OpenStreetMap Foundation Japan.