Ahmad Dahlan (Alan) has a rich background in English language teaching and education management. Here are some highlights of his working experiences:1. Trainer at Yogya Executive School: 2003-2005 During this time, he worked as a trainer at Yogya Executive School in Indonesia and taught English to students.2. School manager and teacher at International Language Studies: 2005-2008 In this role, he was responsible for managing a language school in Bali, Indonesia and taught English to students of various nationalities.3. Director of Studies and Center Director at EF English First: 2010-2017 During this time, he worked at EF English First, one of the largest language schools in the world, in the Greater Jakarta area. He held various positions, including Director of Studies and Center Director, and was responsible for managing the day-to-day operations of the school, as well as training and developing teachers and students.4. Online English Teacher: 2017-present In 2017, Ahmad Dahlan started his own online English course, "English House 101", which has helped many students improve their English language skills. He has been teaching online for several years and has built a reputation as a knowledgeable and effective English teacher5. He also creates Free English Learning videos on IG and TikTok.