The tough 30-year-old forward, known as "Jet-ski", has been a revelation for the Broncos under coach Michael Maguire.
Injury and form restricted the veteran journeyman to just six NRL games for the Broncos in 2024 after a mid-season transfer from North Queensland.
His former South Sydney coach Maguire backed him in the pre-season trials, and ahead of Friday night's home clash with the Sydney Roosters he is the only Broncos second-rower to have started all five completed matches.
"We have started the process," off-contract Gosiewski said when asked about negotiations on a new deal.
"I definitely want to stay here at the club. I am off contract this year and I want to stay.
"I've played at (five) different clubs for different reasons but I am happy where I am ... and I'm playing pretty consistent footy at the moment."
Gosiewski has bought a Chargrill Charlie's chicken franchise in Brisbane that will lock him into business interest in the Queensland capital for years.
He is also being courted by Super League clubs, which provides another playing opportunity.
"Yes, definitely. That is always an option and we have always wanted to look into that," he said.
"Some other things have happened now so depending on timeline and what we want to do we will make that decision when we have to."
Gosiewski started his NRL career under Maguire at the Rabbitohs in 2016 and the experience gave him a work ethic that has persisted to this day. It's why he's thrived under the hard edge of the Broncos coach, evidenced by his key role in the club's winning 4-1 start to the season.
"We train hard and we do solid reps so when I was younger (under Maguire) I thought that was how you are meant to train. I thought that was normal," he said.
"That probably set me up for my career so I have always trained how I played.
"I have always been confident in my ability and knew what I was capable of. It helps when (Maguire) can see that as well and the quality of what I am doing.
"I've never felt my days were numbered. I have always backed myself."
Gosiewski was far from satisfied with his game in the 46-20 win over Wests Tigers last week.
With suspended pair of second-rowers Jordan Riki and Brendan Piakura due back in rounds seven and eight respectively, he must keep impressing.
"Some games I have been happy and some I haven't," he said"Last game just gone I wasn't happy with. I missed a couple of tackles that led to tries so my defence (I need to improve ). I am very hard on myself."
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