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10 things I learned about writing data pipelines in Python and Spark.


PyData London 2016

Starting in the Q4, 2015, I wrote the financials data pipeline that collates ~200 data points and calculates ~300 metrics for ~80M account filings from ~11M private companies.

As I write, this is in production:,

I used Python, Spark and loads of good fortune to make this. I would like to share my journey with the PyData community - purely to give something back, as I have learned so much out of the meetups.

My talk would include takeaways, patterns, anti-patterns, mistakes and big mistakes that I made and learned from. I think this will be very useful for beginner-intermediate data wranglers.

Slides available here:


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