Berin was called to the Bar of England and Wales in the year 2000. She has since developed an extensive practice in complex international disputes acting for and against states and state entities. Having began her career at the criminal bar, Berin was instructed in a multimillion US dollar commercial fraud matter representing a Turkish Government entity as second junior. After completion of her Masters of Laws (LL.M.) in 2009 at University of London in ‘international business law’ mainly specialising in international dispute resolution she was instructed in a series of major investment disputes involving Central Asian States alongside prominent international law firms. She has since been instructed regularly in matters involving public international law, acting as counsel in investor-state disputes arising out of investment treaties and foreign investment laws, acting for and against host states and investors in international arbitrations conducted under ICSID, ICC, and UNCITRAL rules; and international commercial/ contractual disputes conducted under ICC, LCIA, UNCITRAL, LMAA and other regional rules of arbitration. Berin is certified and admitted as an arbitrator by Dubai International Arbitration Center and Energy Disputes Arbitration Center. Berin is also CMC accredited Mediator by the Bar of England and Wales. Berin is a visiting lecturer at Kadir Has University, Istanbul, Turkey teaching Investment Treaty Disputes and Investment Law.