Computer Related Discipline for Economist
The first thing that jumps to mind is something in data science, perhaps applied to analyzing big data sets in a field such as financial modeling, behaviorial economics, etc. Your software development background will leave little doubt that you could learn to implement data analysis algorithms in R or Python as needed, and your economics degree would be an asset if your were applying your data analysis skills toward problems in that field. Graduate data science programs in the US typically allow people to enter from a wide variety of undergraduate fields, provided that you have demonstrable ability in math and programming.