The fundraising campaign has so far resulted in $1,186,494 in donations for Dolly’s Dream.
James joins the GroupM agency from Initiative Melbourne, where she worked as managing director.
Incumbent Starcom, which is also in the running for the account, manages Subaru's media buying and planning.
The GroupM agency bested PHD and Hearts & Science.
The pitch was backed by the agency's data and analytics division, GroupM's data technology capability, and WPP Open.
The GroupM agency has hosted a fireside chat with Dr Charlotte Keating, resident psychologist at ABC Radio.
"A partnership like this has effectively zero wastage and maximum attention, which makes it such a valuable opportunity to be part of."
In his last three years as CIO, Thomas had been managing 240 people and almost $1bn in billings.
Specsavers has worked with Mediabrands' Initiative in Australia since 2016 and with GroupM's EssenceMediacom in New Zealand since 2010.
GroupM joined forces with Amaze in 2023 and is now one of the first companies in Australia to roll out a pilot.
The team will lead the charge in providing client consultation and business solutions.
The account will continue to be serviced out of EssenceMediacom Sydney and led by client partner Daniel Morgan.
He has over 14 years of experience in the media industry and worked across a variety of categories and international markets.
The account was won in a closed pitch process with the incumbent, PHD.