Most of these are inevitable and always challenging for any large organization, but are also related to the difficulties inherent in fintech
Information Overload - there is quite a lot of data and information and rules and regulations and processes that are big org and fintech related that it can be daunting at first with a heavy learning curve, especially for those that may be more from traditional technology rather than fintech specifically or that don't have a finance background.
Work/Life Balance - While the hybrid model is helpful, there are still some needed improvements to limit the need for certain types of roles to work nights and weekends. This is especially true for technical roles in software development groups.
Large Organization - This is really a part of any large org, but the structure and org charts and overally landscape of the company is a lot to take in and takes quite a bit of time/effort to come to understanding of all the various interconnected teams/departments and their role in the overall scheme of daily operations. Again, this is due to the type and size of org, there is nothing exceptional that DTCC does to make this worse, in fact they make a lot of good effort to help limit this negative.