I’m serving my 2 months notice in my current company. I’ve worked here for about 3 years as team leader for 2 teams and (not officially) project manager for teams’ projects. All projects are for a single customer and in this office we do not have a manager above us.
Our direct manager works in an office in a different city: she visits us 2 or 3 times a year, she and I usually coordinate our projects through calls. She is very capable, gives us a lot of freedom and our professional relationships are very good.
The manager above her (call him M) works in a third office and is supposed to be the project manager of all the projects for this customer. M directly manages 4 teams and should also manage me and my teams. As opposed to our direct manager, M is rude, prone to micromanagement, extremely authoritarian, vindictive, imposes technology decisions without any proper technology knowledge, etc. Because of logistics (different offices) and practical reasons (customer in my city works only with us, customer in his city works only with M and his teams), M is not able to really manage us. This situation drives M very angry and M expressed his anger on many occasions.
My next job will be with our current customer and I will be the vice-director of the business unit to which all projects existing between my current company and my next company refer to. So I will have a position above M and I will “manage” him, approve his decisions, check the quality of M and his teams’ work, bypass him and talk directly to the CEO if I think it will be the right thing, etc. When he found out I’m leaving for this position, he phoned me and openly insulted me and more or less threatened me AND my teams. I simply waited M to finish and asked him if he felt professional and I closed the call.
I don’t care about M and his threats against me but I'm worried about what it could do to my teams. So my 2 questions:
- I’m 100% sure M will try to hinder my work in the new company: how can I prevent and/or correct this?
- Is there a way to prevent M to take revenge against my teams?