I would recommend go for big4 if it s financial audit role. but, I would go against it if it s IT audit (Deloit calls it Enterprise Risk Services, EY calls it IT Risk and Assurance,...)

What you're essentially doing is testing ERP system controls and running analytics on large datasets. It's less "consulting" and "finance" and more "IT". You are effectively audit support to the main engagement team in making sure that the auditors can rely on the outputs from IT systems from which the client gives them reports.

Once you've had some significant experience there, you MAY be put on a more IT-Consulting type role, but even that will be an engagement to ensure that a system is functioning/installed properly, or to see if there are any control or implementation issues. Anything more IT-Strategy related will go to strategy consulting group.

If later you want to go into anything other than IT Audit, it'll be a challenge. You do almost no real accounting and your role is focused on IT and ERP systems - so its a much narrower field than audit in terms of exit ops. You may even be asked to do an IT or IT-Audit related certification.