Hj Ridwan joined Muis in 1996 as Head, Information System, and posted as Head, Organisational Excellence in 2008. In 2015, Hj Ridwan was appointed as Mosque Executive Chairman of En-Naeem Mosque, and subsequently posted to Masjid Maarof in August 2021. He is concurrently the Senior Mosque Executive Chairman of Masjid Al-Firdaus.