Coding isn't the hard part. The hard part is translating the business needs in code.

You can tell a junior programmer "Make a DB with tables book, author, has Written, customer, stock, hasBought, with the following rules between them. Write a repository, for that DB. Use repository in BooksService and BasketService. Use those services in Books controller and Basket controller." and he will do a fine job.

Ask the junior to write an API for a book store and he will have a harder time.