Dib was born in Lebanon and migrated to Australia with his family when he was two years old.

[5] He had previously served on the Australia Day Council of New South Wales, the New South Wales Police Commissioner's Advisory Panel and the SBS Community Advisory Committee, and was awarded a Pride of Australia award in 2013.

[10] Following the resignation of Shadow Minister for Education Linda Burney to contest the federal seat of Barton, Dib was appointed to replace her in the portfolio.

In 2021 he was moved to the Emergency Services, Energy and Climate Change portfolios in the frontbench led by Chris Minns.

[7] Dib's seat of Lakemba was abolished by the New South Wales Electoral Commission prior to the 2023 election and Dib registered to contest the seat of Bankstown.