Javascript coding and API connections to a web form

I am looking for someone to write some Javascript code to connect 3 APIs to my Formstack form, to enable data to be pulled into fields on the site. There are also a couple of CSV files that I need to be hosted and used as look-up data to populate fields on the form.

Also some general coding to create actions on the form e.g. show this field if that etc. This could lead to additional work on an ongoing basis, I am looking for someone who can complete the works this weekend, before close of play Sunday midnight GMT. I have all the data and brief ready to go.