Mr. Mahmoud is the Managing Partner and one of the founding partners of the law firm of DIKKO & MAHMOUD. He was one time Kano State Attorney General & Commissioner for Justice and was in the public service (from 1979 to 1993) as prosecutor and legal adviser. He held various positions including Director Litigation, Public Prosecution, Solicitor-General at the Ministry of Justice, Kano.
Mr. Mahmoud was elevated to the rank of Senior Advocate of Nigeria in 2001 and is a Life Bencher of the Body of Benchers, the highest regulatory body for the legal profession in Nigeria. He holds the national honour of the Officer of the Order of the Niger (OON). He was elected the 33rd president of the Nigerian Bar Association (NBA), Nigeria's umbrella association of professional lawyers on 1 August 2016.
Mr. Mahmoud is a member of the International Chamber of Commerce (ICC), London Court of International Arbitration (LCIA) and was accepted into the Energy Arbit rators List (EAL) in 2013.
Mr. Mahmoud trained at Ahmadu Bello University graduating in 1979. He holds a Master's degree in Law from the same University. He was at various times at different global institutes, including the International Development Law Institute (IDLI) now IDLO in Rome, Italy, where he obtained a certificate in Law and Development in 1987, and Harvard University where he obtained a certificate in Techniques of Privatization from the Harvard Institute of International Development (2000). He was also at the Northwestern University School of Law, where he attended the Summer Institute in Corporate Law and Business in 2001.