The Bhoys goalkeeper has been speaking ahead of Sunday's clash with Rangers.
The Scottish champions face Rangers in a hugely anticipated clash this Sunday - when the two sides meet in the last four of the Scottish League Cup.
And, ahead of the cup tie, Gordon feels his side's work on the training ground throughout the season has benefited their back four of late, something he believes will help them against Rangers.
Celtic are yet to concede in 2015 but headed into the New Year conceding seven in four games. Granted, four of those came in one Europa League match - but the Bhoys certainly didn't look ultra-confident defensively. Now, however, Gordon thinks things are starting to click.
“We’ve been fairly tight at the back over the last few games and that’s given us a good platform from which to go on and win,” he said.
“We’re pleased with the back four doing so well, not conceding too many chances and we’re managing to put them in at the other end too and go on a decent run.
“We’ve been working hard throughout the season, working on different things every week. The manager is trying to get his philosophy over of what he wants us to do both in attack and defence."
Celtic's warm-weather training camp in Gran Canaria seems to have done them the world of good, as they sit top of the Scottish Premiership, having been second before they went away.
Aberdeen dropping points has also aided Celtic's cause but their focus now shifts to the cup ahead of the Rangers tie this Sunday.
Rangers sit second in the Scottish Championship, thirteen points off league-leaders Hearts - although they have a game in hand.