I'm not an IT expert, but I am wondering if it is required that you're an IT expert while starting in a big 4 company? Wether you are required to be one or not I believe that it is by far more important to analyze the context of this m&a transaction. In my opinion the following questions should be answered first:
1. How important is the IT in the company to be merged/acquired?
--> E.g. if we're talking about a bank, a tech or software dev company or similiar, it will be a top prio issue. If we're talking about a consultancy company, I wouldn't pay too much attention to the topic ;-)
2. Will it be required to merge the IT systems in the future? If yes, at which effort and cost (incl. timeline) will it be doable?
The question might be similar to the question: What is the purpose of the M&A transaction or will the IT infrastructure remain in the future?
3. Further some high level questions for the management:
- Is the IT infrastructure state of the art?
- Is the IT properly serving the business purpose?
- What about the backlog? Is everything properly running?
4. Last but not least, if all strategic / high level IT aspects of company which is to be acquired are answered I would anyhow hire somebody to run a proper IT diligence (next to legal, financial and business dd)...
I understand you would like to jump instantly into all technical details, but if you haven't answerd the strategic IT questions before, you might fail to give a good answer...
Hope it helps and I'm sure someone will also give you enough details of how to run a proper IT DD ;-)
Best - Jasper