Jassim started his career in the United States working for the Federal Reserve Bank of US as an economic analyst in 1998. During his career with the Fed he was an expert specialist in econometric analysis and economic impact studies and modeling.
Later he joined Citigroup to work closely with Chief Economist of Citigroup Dubai to assess various diversification studies on how the bank can contribute to financing the growth of the economic base of the UAE. In 2002 he was appointed as a Fund Manager byInjazat Capital Fund by Gulf Finance House and Islamic Development Bank. During his period as a fund manager he was specialized in technology venture capital investments, where he introduced VC investments as a pioneer and changed the industry standards of conventional investment into high growth and innovation based investments for the first time in the MENA region.
Later he served as a Director in ATKEARNEY, US based management consulting firm and worked closely with the Executive Council, Dubai Government as well as Prime Minister Office of the UAE to develop new Economic Model and Economic Development Plan at the time of world financial crisis back in 2010, during which he managed to spear head new and competitive economic policies as well as implement and improve competitiveness of government services in terms of ease of dong business and improved worldwide competitiveness ranking of the United Arab Emirates, by working closely with main government departments locally in Dubai as well as UAE Federal Entities.
In 2014, Jassim joined Dunia Finance as a strategy head to work on digital banking and introduce new ways of credit card offerings in the digital age. Dunia Finance owned by Temasek of Singapore and Mubadala of Abu Dhabi. Then in 2017 he was appointed as a Director of Investments in the Sovereign Investment arm of Sharjah Government “Sharjah Asset Management Holding” to manage government investment assets across various industries and sectors such as Aviation, Automobile, Transportation, Food and Agriculture, and so forth.