This is definitely a sound strategy, you have to be careful about little tech too. Personally I managed to work at several "big tech" companies that were okay w

This is definitely a sound strategy, you have to be careful about little tech too. Personally I managed to work at several "big tech" companies that were okay with me doing side work for profit (both consulting and design/development work). I carried that forward as a manager and was always supportive of people who did side projects because my experience was that those people were less likely to burn out than ones who were spending all their time at work.