Findlay, who is just 20 years of age and plays as a centre-back, has joined Newcastle on a free transfer after leaving Celtic at the end of the 2015-16 season.
The Scotland Under-21 international defender played on loan for Scottish side Kilmarnock last season.
Both Celtic and Newcastle are big clubs, and Findlay is glad to have switched from Celtic Park to St. James’ Park.
The youngster has also underlined the difference between Glasgow and Newcastle. Findlay has pointed out that Newcastle is a one-club city, while in Glasgow, Celtic and Rangers have a massive rivalry.
"When I came here, I was shocked how much the immediate city are just in love with the club," Findlay told Newcastle’s official website.
"At Celtic, in Glasgow, it's very much a divided city between Celtic and Rangers, but I've never experienced an atmosphere like this, where everyone's singing from the same hymn sheet and they're all rooting for the one club. To have that many passionate fans of a club is a special thing.
"I don't think I've had a day I've walked out and not seen a Newcastle strip yet. I'm living with a good friend of mine who's Newcastle daft, and as soon as he heard I was signing here he was willing to let me stay there as long as I wanted!
"It's a proud moment for me. I've come from Celtic, who are a big team in Scotland, but to be able to leave Celtic and join a team who are just as big, if not bigger down in England is a really proud moment for me. I'm delighted to be here."
Newcastle are one of the biggest clubs of England and will be aiming to finish in the top two of the Championship next season and gain automatic promotion back to the Premier League.
As for Celtic, they will be determined to win the Scottish Premiership title yet again and qualify for the group stage of the Champions League.