What is the ruling on working as a machinery electrician in a cigarette factory, given that I have a contract obligating me to work for ten years because the factory funded my college education, and I was unaware of the ruling on cigarettes at that time?

Cigarettes are forbidden (haram), and working in a cigarette factory is not permissible because it falls under cooperating in sin. The questioner must leave this forbidden work and either reconcile with the factory to convert their work to something permissible, or they should be given an extension to repay the money spent on them during their studies.