My employer follows a similar approach and it works wonders. Early on we didn't have a program like this and this went poorly. We had juniors and even novices

My employer follows a similar approach and it works wonders. Early on we didn't have a program like this and this went poorly. We had juniors and even novices joining us without any direction or goals. They were unproductive, disconnected, and discontent. Many would eventually quit hoping for something better. Since then, we have iteratively built up an onboarding process similar to this. Today, we have people dedicated to the first weeks of a person's employment. We have a curriculum that we follow to ensure nothing is missed. We have several mentors in each team. Depending on the employee's interested and the company's needs, they will have the opportunity to try different roles on different teams. Along the way we continually check in with them to see how things are going and if there's anything we missed it that they would like to change. We take those requests seriously and act on them promptly. The results have been astounding! Our new hires are happy and productive. They recommend us to their friends, helping us to find excellent talent faster and cheaper than online job postings or career fairs. The feedback they give us helps is to improve the process to the point where we typically have few if any minor issues and no major issues. I highly recommend taking a similar approach if you find yourself in a similar approach as a hiring manager, mentor, or team lead.