Senior management should spend time understanding competition and devising future strategy and not on managing internal team and people issues. Senior quants should not repeatedly fetch, clean & plot data, and traders should not spend time on converting the first-cut excel implementation of strategies to a more VBA/C++ based add-in. Grid processing of your legacy Monte-Carlo engine should also be done by dedicated experts.

Carefully dividing the labour among your in-house and externally-managed teams will result in getting high quality work done, without having to spend time and resources on hiring junior analysts and their training.