Tizar currently serves as a member of the Indonesian Bar Association (PERADI) and has been admitted to practice in Indonesian courts. Master's areas of practice are Intellectual Property Rights; General Company Law; and Civil & Commercial Litigation.
Penulis buku: Transformasi HRD dalam Bisnis (Deepublish, 2021). Ketika Kita Harus Memilih (Gunung Sopai, 2022). Rahasia Sukses Bisnis Modern (Deepublish, 2022). Merajut Keabadian (Bintang Semesta Media, 2023). Website: www.ManajemenTerkini.com.
Public speaker, Member of IPSA (Indonesian Professional Speakers Association), Dhammaduta, Penyuluh Informasi Publik (PIP) dan Penulis. Urun menulis 7 buku antologi dan kolaborasi : "Berdansa Dengan Kematian : Narasi Survival, Solidaritas dan Kebijakan di Pandemi Covid-19" (November 2020), "Di Balik Panggung Bicara (Kisah dan Kolaborasi Pembicara Publik)" (Mei 2021), "Selalu Tebar Kebaikan" (April 2022), "Perubahan Itu Pasti, Kebajikan Harga Mati" (Desember 2022), "Gerimis Cinta Merdeka" (Januari 2023), "Speakers' Notes" (Januari 2023), dan "Speakers' Notes: The Next Journey" (Oktober 2023).