I did this about 5 years ago. My suggestions. 1. Find a lieutenant asap: That's your start towards building a coalition of folks who get things done. They

I did this about 5 years ago. My suggestions. 1. Find a lieutenant asap: That's your start towards building a coalition of folks who get things done. They can give you a head-start on institutional knowledge. In return, you can give them a new boost they need in their career. 2. Meet with everyone twice: In the first week meet with everyone that is either a consumer of your tech or someone that you rely on for data/processes. Let them talk about their business, what's working, what's not, etc. Write it all down. Then at the end of that first meeting, set-up a follow up conversation with them soon after. By that next meeting, you'll definitely have follow up information/questions. 3. Identify your value & execute: Why did your new boss/c-level bring you on? What are they looking for you to do within your first 3-6-12 months. Figure that out, make sure it's reasonable, then drive it with relentless precision & focus. You're not 'the guy' anymore that knows everything. You can't keep a bunch of plates in the air at the same time because you have all this institutional knowledge of systems and people. So the simplest way of standing out is being known as someone who can be given a task and delivers. Eventually the experience you get from delivering on that goal(s) will give you the knowledge you need to be a domain expert again. 4. Ask for help: Simplest way to get someone to like you is to ask them for a favor. Doesn't even matter if it's all that important. It's very counter-intuitive. You'd think the best way to get folks to like you is to do stuff for them. But a) you don't have that much value at the moment and b) they wind up feeling indebted to you, which isn't all that great. Instead, ask someone for help. If they give it, genuinely thank them. This helps in two ways. 1) It makes you seem like a real human and 2) it gives you an opportunity to follow up with them later and say something to the effect of, "Hey, thanks for helping with <the thing they helped you with>, it allowed me to do <some goal for the company> which means <positive thing for the company>." Don't worry if it doesn't affect them directly. Then ask them about what they're working on. That positive feedback loop makes it possible for you to find the best talent at the company and they will start approaching you with questions/information.