Al-Nuaimi studied at Qatar University, headed Qatar Football Association, beside being a founder member of Eid bin Mohamed Al-Thani Charity Foundation and a former member of the directors board of Qatar Islamic Bank.

Al-Nuaimi is described as the largest financier of terrorist groups in the world, which made the US Treasury Department put him on the terrorism list, making him one of the most prominent faces on the terrorism list announced by Saudi Arabia, Egypt, the UAE and Bahrain, which included 12 institutions and 59 terrorist personalities.

In 1998, he used to criticize some of Hamad Bin Khalifa's policies and circulated a letter condemning the Emir's decisions to raise women's rights and allow selling alcohols. Al-Nuaimi, who was a history professor at Qatar University until 2009, supported Ikhwan's principles and encouraged the Qatari Consultative Assembly to oppose mixed education at Qatar University.

At the end of 2013, the US Treasury Department described al-Nuaimi as a "terrorist financier who provided funds, material support and communications to Al-Qaeda and its affiliates in Syria, Iraq, Somalia and Yemen for more than a decade.

He paid more than $2 million a month to Al-Qaeda in Iraq, $600,000 to Al-Qaeda in Syria and $250,000 to Al-Shabab in Somalia, beside large amounts to a Yemeni charity foundation that pumped money to Al-Qaeda in the Arabian Peninsula.

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