Defining levels and expectations for individual contributors is very important and should be prioritized. Well-defined engineering levels and expectations will help engineers in your organization better understand their strengths and weaknesses as well as the expectations of their managers.
Engineering managers will rely on a career level map to make good and consistent decisions when it comes to:
- Hiring new engineers
 - Evaluating the performance of their team members and deciding on promotions
 - Coaching individuals in areas where they need to grow in order increase their impact and advance their careers
 

