Ugarkovic and Ben Kantarovski established a successful partnership at the base of the Jets' midfield last season, when Newcastle advanced to the grand final.

Croatian under-19 representative Ugarkovic joined Newcastle at the beginning of the 2015-2016 A-League season.

He was one of only two players to feature in all 29 of the Jets A-League matches last season, logging a club-leading 1,233 passes.

One of our most consistent performers puts pen to paper on a contract extension ✍️ as we lock in Steve Ugarkovic until the end of the Hyundai A-League 2020/21 season!

‍‍‍‍‍‍ ‍‍

📰 https://t.co/QhbXB76DE5 pic.twitter.com/u43mlUMIdK — NEWCASTLE JETS FC ✈️ (@NewcastleJetsFC) October 7, 2018

"Steve has been an integral part of our team and I'm delighted to have him in Newcastle for the next few seasons," Newcastle coach Ernie Merrick said.

"He was so consistent for us throughout last season and it was good to see how the team's success was able to bring the best out of him."

Last week, Newcastle announced Nigel Boogaard, Jason Hoffman and Dimi Petratos had all signed contract extensions.