R developer for simple work

I need an R developer to make some example reports on time series from an R package.
The data is stock market type data and allows us to list the available datasources, the metadata in each datasource and return time series data.
The reports uses one line R commands that are built into the package to get the data.

The simple reports I need are:

1). List all datasources (this is a built in command).
Display all field names in result and their data type.
Display 5 fields from each record (I will choose them)

2). List datasource metadata (this is a built in command).
Display all field names in result and their data type.
Display 5 fields from each record (I will choose them)

3). Get time series values for 4 datasets (this is a built in command).
Display all field names in the result and their data type.
Select the "Close" data column if it exists or the "High" one if it does not
Display 30 values ( latest first from the selected data columns ( if there are 30 values available) from each record in a list of columns

Need this in RStudio. Max $50