[5][6] Johnson has worked in animal molecular genetics in laboratories in Sydney, Townsville Queensland, Melbourne and Boston USA.
[8] The team is sequencing the genome and transcriptome of this iconic marsupial to assist in the conservation of this threatened species.
[2][12] Johnson has worked with sample types as diverse as shark fins, bird embryos, gall bladders, seized fish meat, salted animal skin, bones and horns.
Johnson is a member of the Australian Academy of Forensic Sciences, and in 2014 Johnson became one of the few people in Australia to be appointed as a Wildlife Forensic Examiner by the Australian Federal Environment Minister under section 303GS(1) of Commonwealth Environment Protection and Biodiversity Protection Act 1999.
Johnson's career has been supported by her science mentors Marianne Frommer, John Sved and the late Professor Ross Crozier.