JESS Views 7 meanings found JESS commonly refers to the Java Expert System Shell, a development environment for building rule‑based applications, and is also the acronym for Jumeirah English Speaking School in Dubai. Miscellaneous Joshis External Stabilisation System Juneau Empire Sky Spotter Community Jumeirah English Speaking School Governmental Joint Exercise Support System Computing Java Expert System Shell Java Enterprise Systems Symposium Java Extended System Shell