ElasticSearch Query to get JSON file and convert to CSV/Excel file

I am seeking a skilled programming expert, proficient in either Ruby or Python, with intermediate-level ElasticSearch querying capabilities. The primary task involves intelligently executing aggregations and nested queries in ElasticSearch, extracting data, in JSON format, and then transposing it into Excel or CSV format. I'm open to whichever format you are more comfortable with, so long as it is either of the two mentioned.

In addition to this, having familiarity with job automation via GitHub is critical for this project role. This background should include understanding how to automate and schedule tasks to regularly extract, convert, and save this data.

Ideal Skills:

- Proficiency in Ruby or Python
- Intermediate level ElasticSearch querying
- Experience with JSON to Excel/CSV conversion
- Familiarity with GitHub for job automation