I think you make your own luck for things like this. I was a technology architect which had the advantage of being quite broad in scope. I came to the company with a deeper technical background than some which helped, but I also built a specialism after I joined that was rare in the company. That meant if there was a need for that skill, I had a high chance of being asked to assist. And of course, when it came to change projects, choosing ones that held an interest helped. But for example, anyone who joined the project with the police force had an opportunity to join a shift, anyone who worked on the TV project could have lunch where I did, so it isn't all about the role.