Since its founding in 1939, and charter by the National Society of Professional Engineers in 1956, MES has been protecting and promoting the profession of engineering as a social and economic influence vital to the affairs of society and the United States.

The Mississippi Engineering Society's members include professional (licensed) engineers, engineer interns, engineering students, and experienced graduate engineers from all disciplines of the profession. MES members work in industry, government, private practice, construction, and education.

MES functions on three-levels: local, state, and national. Each autonomous level deals with problems and opportunities affecting engineering practice and the public welfare in its area. Also, at each level, the members directly elect all officers. A Board of Directors sets overall policy.

Members of MES abide by the NSPE Code of Ethics for Engineers and follow the Engineer's Creed..