Level 1
Understands the basics of debugging and the tools used for it.
Level 2
Uses a systematic approach to debug issues located within a single service.
Level 3
Proficient at using systematic debugging to diagnose all issues located to a single service. Uses systematic debugging to diagnose cross service issues, sometimes with help from more senior engineers.
Level 4
Proficient at using systematic debugging to diagnose all issues within the scope of their domain.
Level 5
Proficient at using systematic debugging to diagnose all issues within a set of related domains.
Level 6
Leads incident response across the engineering organization as needed. Uses systematic debugging to diagnose issues across the organization.