Mardhiah’s area of practice is in Shariah Law, specifically, probate and administration matters. Although Mardhiah’s main practice is in Shariah law, she continues to develop her civil law knowledge by supporting senior lawyers in the Firm with conveyancing and litigation matters. She is committed to providing effective Shariah legal advice and offers her service to clientele with professionalism and integrity.

Her commitment to excellence has resulted in various other achievements prior to joining the Brunei Bar and includes having served as a military cadet from 2016 to 2019 and being a runner up in the HSBC Young Entrepreneurship Awards in 2011.