We work mainly in Python. 70% of our code is written in this programming language and its libraries: specially Django and NumPy & SciPy libraries. To a lesser extent we use C, C ++, PHP, and Java.
In the area of Machine and Deep Learning we mainly use Spark, Keras (using TensorFlow), and ScikitLearn.
In the Analytics area, in addition to those already mentioned for Machine Learning, we use Pandas and Apache Arrow. As indexer or search engine we use ElasticSearch. On the analytical front we use the D3 libraries for graphics.
We are increasingly using React for front-end development.
As cloud computing services we use OpenStack and AWS, usually on Ubuntu Server or Debian.
70% of our code is written in Python.