Apple engineering levels: ICT2 to ICT6 explained
Apple's individual-contributor ladder runs ICT2 to ICT6: ICT2 entry, ICT3 mid, ICT4 senior, ICT5 staff or principal, ICT6 senior principal. ICT4 is the terminal level, and the step past it is reported as unusually hard - strong reviews at ICT4 do not reliably produce an ICT5 promotion.
Apple runs the least visible ladder of the large companies, and it shows: the bands are reported inconsistently and the company says nothing publicly. What is consistent across sources is the shape, five individual-contributor levels with ICT4 as the senior band where most of the ladder sits.
The distinctive feature is that ICT4 ceiling. At most companies the terminal level is somewhere an engineer can sit comfortably while remaining plausibly promotable. At Apple, ICT5 is widely described as a step many strong ICT4 engineers simply never make, regardless of review history.
Treat every number here as convention rather than policy, and any mapping to Google or Meta as approximate. The scope of the decisions is a far better guide than the band.
What to actually study
Real modules from the curriculum, in the order they make sense. Every video each one points at is free.
Common questions
- What is ICT4 at Apple?
- ICT4 is the senior software engineer band and Apple's terminal level, meaning an engineer can remain there indefinitely. It holds the largest part of the individual-contributor ladder and maps roughly to Google L5 or Meta E5.
- Is ICT5 hard to reach at Apple?
- By all reported accounts yes, and harder than the equivalent step elsewhere. Engineers describe repeated strong reviews at ICT4 without an ICT5 promotion following, because the level requires the scope to exist rather than only the performance to be good.
No course promotes anyone. Levels are awarded by employers against their own ladder, on evidence collected over months. What material like this can do is close a specific knowledge gap that is currently in the way.
Every level