Mr Dikko started his career at the Kaduna State Radio as Producer of News and Current Affairs, from where he moved to the Nigerian Standard Newspaper as Sub-Editor. He lectured briefly at College of Advanced Studies, Zaria before joining Habib Nigeria Bank.
He joined Intercity Bank PLC in 1998 as General Manager and served as its Managing Director/Chief Executive Officer from 2001 to 2005. He was a Non-Executive Director at Mutual Benefits Assurance Plc and has also served on the Board of Enterprise Bank Limited. He was Chairman, Legacy Pension Managers (PFA) Ltd.
He was Executive Director, Commercial Banking at Unity Bank Plc and later Chairman of the Board. He served on the Governing Council of the defunct Nigeria Stock Exchange as well as the Boards of several private companies.