I'm
building
API's.
I will design create deploy them for you.
I'm using:
RUBY
Loved by startups (and me). Perfect for building prototypes, MVP's and applications where performance is not so important.
GOLANG
When performance is everything this is my number one language. It's perfect tradeoff between speed and development time. It's also good If you don't want to spend fortune on amazon EC2 instances ;)
PYTHON
This is my Machine Learning tool. I'm using it for building and training models. Libraries like Tensorflow, Numpy and Scipy are my everyday companions.