3 companies in a row I got recruited by folks from other companies - skipped the degree and about to turn 40, so older is relative - the biggest diff I have had is I am obvious and honest that I am always looking and actively build the network, especially the youngins - I have gotten 4 jobs (and its accelerating given the last 3) from folks I helped teach or train in the past who went on to do something interesting.
Hmmm, the nugget about focusing on younger folks you've trained sounds interesting, I hadn't previously thought of that. However, there have been very few juniors around in my last few jobs. Maybe because they were contracts.