Mr. Shamseldeen Babatunde Ogunjimi began his career in the Federal Civil Service in 2000 when he was appointed to the Service under the pool OFFICE OF THE ACCOUNTANT- GENERAL OF THE FEDERATION and worked as Principal Internal Auditor and Head of Internal Audit Unit in the Ministry of Defence, Nigerian Armed Forces Resettlement Center and Nigerian Navy Headquarters respectively, between 2000 and 2007.
Shamseldeen B, Ogunjimi, between 2007 to 2010 worked as Head of Accounts of the Nigerian Copy Right Commission and in the year 2010 to 2017 , he worked as Assistant Director in both the Ministry of Police Affairs and the Office of the Accountant-General of the Federation and as Deputy Director in the Federal Ministry of Environment.