With the goals flowing for second tier German club FSV Franfurt and his pace, endurance and guile announcing him as a star of the present rather than simply the future, Leckie is looking the business with Australia’s FIFA World Cup opener against Chile only 10 weeks away.
The 23 year old – who underlined his growing stature with a composed and combative display in Australia’s 4-3 loss to Ecuador in London this month – is ready to shine on a bigger stage.
'I would love to lead the attack in Brazil, I am working really hard and doing all I can to impress," said Leckie, who has scored eight goals in 24 appearances for mid-table Frankfurt and one in six games for Australia.
'I think I can do the job and I am working all aspects of my game and against Ecuador I really enjoyed linking up with Tim Cahill.
'I have been learning a lot from him, he’s still such a great player who knows what it’s all about."
Though Australia played most of the second half with 10 men against Ecuador after the sending-off of goalkeeper Mitch Langerak, Leckie played the full 90 minutes, explaining: 'I am feeling really fit at the moment and I am able to last full matches. In fact, in the last 10 minutes I still have the power to push on.
'Last season I had a few injuries but now I am injury-free and attacking my opponent one-on-one at club level in a role where I am given a little bit of freedom to express myself.
'My job is to score and make goals "¦ and hopefully I am doing that okay at the moment."
Though Australia is among the great underdogs in Brazil where it has been drawn in the same group as world champion Spain, Netherlands and Chile, Leckie is drawing encouragement from the way new coach Postecoglou has the team playing after just two games at the helm.
'A lot of the players said after the Ecuador game that, particularly in the first half, that it was the best Australia had played in a long while in an attacking sense," he said.
'Of course, we threw it away in the second half and need to learn lessons but overall, for the younger guys like myself, it was an important experience.
'It was the first time at senior level I’d be involved in a match where a team lost after leading by three goals and it showed that you should never give the opposition a sniff."
Leckie, who is doubtful for Frankfurt’s next league game at Erzgebirge Aue on Thursday (AEDT) after picking up a minor ankle injury against Bern Halloran’s Fortuna Dusseldorf at the weekend, is not just going to Brazil for the 'experience".
He wants to see Australia leave a lasting impression.
'We don’t want to go there just for the experience, we know how tough it will be and that we’re underdogs but we are going there to try and show our spirit and fighting qualities," he said.
'Our first game against Chile is massive – and if we can do something special against them it will open people’s eyes that we are noy just going to be a walkover in the group.
'You never know, especially if we can produce the same level of performance as we did against Ecuador. But we need to make it last the full 90 minutes.
'The team is being rebuilt right now under Ange "¦ and it’s all new for him too. We are still learning the way he wants to play and while there have been positive signs there’s an awful lot still to do and to accomplish."
Though contracted at Frankfurt until 2016, the former Adelaide United flyer’s trajectory could see him back in the Bundesliga – where he made nine appearances with former club Borussia Monchengladbach – before too long.
'I would love to push my way back into the Bundesliga and be successful there," he said.
'But right now I need to keep performing for Frankfurt and then hopefully take that form into the World Cup.
'I am just trying to keep my feet on the ground and keep my focus on the here and now."