Hard to say, as they were contributions to existing projects. Those would have happened without me most likely. - ported numpy/scipy to windows 64 bits, and ma

Hard to say, as they were contributions to existing projects. Those would have happened without me most likely. - ported numpy/scipy to windows 64 bits, and making sure windows was well supported - pushing for numpy/scipy to move from svn to git - wrote a prototype of what would become scikit learn. The project really took off after I stopped contributing though I do very little coding now, but I had several people I managed go on good careers and thanking me for it. That was maybe in the end the most impactful thing I do, I hope.