Scripts and Tools writing. Majority of code in Python with various GUI packages, most recently PyQt, but also GTK, FLTK, and wxPython. Tool written were generally run via command-line, but also did tools work for Katana, Maya, Zeno, and occasionally Nuke and Shake. Some work in Maya using MEL and Python as well.
Areas of development included automation of media creation, tools to assist with dailies, adding features to simulation software to allow it to run on our render farm, asset/animation check-in.
Assistant TDs also pick up some shot production tasks as well to build up shot experience. I've done lighting for Transformers (2007) and The Last Airbender (2010). I even assisted with some animation for the Star Tours update we did in 2010, cleaning up matchmoves and doing some light ship animation.
Also included training and mentoring of promoted TA's, and general training of artist and production staff where necessary.