Writing code for a Drupal site can be an overwhelming experience because, even though it’s written in PHP, there’s a dense API behind it. One of the biggest parts of that API is the hook system.
PHP can be challenging to learn, especially if you’re learning Drupal at the same time.
The goal of any company is to reduce costs and increase profit, especially when it comes to online and IT projects. When an IT undertaking is a transitional effort, it makes sense to consider staff augmentation and outsourcing.
If you can think of a topic, there’s probably a podcast about it. Web development is no different.
The most important thing for an employee to learn is the value that comes from training others.