I took a job hiring a RoR ninja and jQuery expert as lead dev (for an alpha app) and immediately rewrote it in Django and MooTools/Google Closure. You can know

I took a job hiring a RoR ninja and jQuery expert as lead dev (for an alpha app) and immediately rewrote it in Django and MooTools/Google Closure. You can know the trendy stuff but still develop with solid software, provided you have some latitude in technology decisions.