Python Data Scientist needed for improving a Recommendation

I'm looking for a part-time data scientist star to join www.my-yey.com, initially for 1 day a week over the next 3-6 months. Someone with experience in using Python and SQL (Postgres), to manipulate data and draw insights from data sets. This person needs to feel comfortable to write production-level python and SQL code. Hands-on experience is a must. The candidate should be able to quickly continue from the point we stopped. And machine learning experience is an advantage.