Millarvie, 16, joined the club at Under-13 level and has been an impressive performer between the posts through the age groups.
He will form part of the Under-17s group this campaign as they target success in the league and cup.
Interim Head of Academy, David McCallum, commented: “We are very pleased to welcome Jaden into the full-time environment here at Rangers.
“His dedication, professionalism and work ethic have been standout qualities throughout his time in the Academy and we’re excited to see how he will continue to progress as he makes the step into a professional setting.
“We look forward to seeing his development as a young professional in the years ahead.”
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