It seems that cloud dev operation which are pat of these banking technology jobs are short because of no real experience in the transition to the cloud. Here is a good summary quote from this article:
“The issue is that every firm in every sector should be on their cloud journey, so there is a shortage of cloud specialists across the market,” says the head of one technology search firm, speaking off the record. “Demand for cloud architects, cloud security professionals and cloud transformation experts who can deliver has never been more intense.”
The $200k banking technology jobs remaining unfilled for months
https://www.efinancialcareers.com/news/2022/06/cloud-engineering-jobs-banking
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