Dasril obtained his Bachelor of Laws and Master of Laws from the University of Indonesia and got his advocate's license from PERADI. Since 2010, Dasril works as a lecturer on Civil Procedure Law at Al-Azhar University in Jakarta. He is also a regular speaker at seminars organized by the Indonesian Audit Board.

As a Partner at Alfonso Law Firm specializing in litigation as a criminal defense attorney and also in commercial litigation, Dasril holds a strong expertise in Indonesian petroleum and gas law, land law, mining law, and corporate and commercial law.

During his 16 years of experiences, Dasril has handled various criminal cases involving high-profile individuals and well-known companies on commercial disputes such as contract disputes and civil lawsuits on various fields of law, and corruption cases.