I work at StackMob, helping engineers develop mobile apps by building out the StackMob platform. I used to manage backend and frontend engineering teams at NexTag and developed a lot of frontend in Java/JSPs and JS-powered web apps before joining StackMob, but the frontend is what I enjoy the most. I built StackMob's frontend using Scala/Lift, and of course HTML/CSS/JS. I also wrote the StackMob JS SDK which gives your JS app a way to add a backend in just a few minutes.