Simple Upwork vacancies parser that grabs the content from https://www.upwork.com/freelance-jobs/.
The spider goes all over the categories and scraps vacancies from each of them.
For presentation purposes I limited the number of categories to only one, so the process doesn't take a while.
You may check out the output of the program in the upwork.json file or generate a fresh one executing
scrapy crawl upwork_spider -o <your_file_name>.json