Career
He later signed with Oakleigh Cannons ahead on the 2011 Victorian Premier League season. During the 2012/13 he made his debut for the senior team in Round 9 against Sydney Football Club. Later that season he was offered a senior contract by Heart and became the first player from Tasmania to earn a professional contract in the history of the A-League. Walker made a total of 16 senior appearances for Melbourne Heart before being released at the conclusion of the 2013/14 season.
Jeremy then returned to the National Physical Laboratory Victoria with Hume City Football Club and was named National Physical Laboratory Player of the Month in July.
After the 2014 National Physical Laboratory Victoria season, Walker signed with Concord Rangers in the Conference South. He joined Braintree Town ahead of the 2015/16 season but returned to Concord Rangers on loan soon after.
Walker then returned to Australia, joining his former club Hume City once again. In April 2013 Walker was called up to the Young Socceroos squad for a training camp held on the Central Coast.
The next month he was also named in the Young Socceroos squad for a European training camp which included international friendly matches against the Netherlands U-21s (24 May) and the German U-21s (31 May).
