I believe software works because of only 3 three reasons,
Planning
Development
Have been working as a data scientist and senior web developer at a start up called SetuServ for the past 2 years. I have built scalable and reliable Language processing systems. This system serves more than 50 clients or more than 500,000 reviews per second with high accuracy.
Depended on django for web development (what else can beat it) and also have extensive experience in html, css, javascript. Have used d3.js for visualisation of the analysis.
Built several classifiers wrapped on scikit-learn and CNN.