[1][2] Eteng hails from Mkpani in Yakurr Local government area in Cross River State, he is a 3 term member representing Yakurr II State Constituency from 2011 to 2023, he was chairman House Committee on Finance and Appropriation, Vice chairman House Committee on Business and Rules, Member House Committee on Public Account, member House Committee on Health Service, Women affairs, Social Welfare and Gender Development all in the 7th and 8th Assembly.
He also worked with the office of the Organization for African Unity, OAU chairman (documentation Unit), at the Presidency where he was in charge of compilation and writing of the research project entitled "OAU Abuja 91 Commemorative handbook".
Eteng Jonah Williams has attended seminars/conferences in Nigeria and the United States of America.
[3] Eteng was a member of the Peoples democratic party since 1999 before defecting to the All Progressive Congress in June 2021.
Eteng, who was the candidate of the All Progressives Congress, APC, polled 57,344 votes to beat his closest rival and former federal lawmaker, Honorable Bassey Eko Ewa of the People's Democratic Party, PDP.