Mentoring is not one mode you apply to everyone. The right support depends on where the person is. A useful frame is that your style should shift from directing to coaching to sponsoring as the engineer grows. Give too much guidance to a senior and you smother them; give too little to a junior and you leave them drowning.
| Level | What they need | Your default mode |
|---|---|---|
| Junior | Fundamentals, close guidance, safe space to practice | Directing |
| Mid-level | Ownership, stretch problems, decision-making reps | Coaching |
| Senior | Autonomy, larger scope, leadership growth, a peer sounding-board | Sponsoring |
Three engineers hit the same gnarly bug. With the junior you pair and narrate your debugging out loud. With the mid-level you ask, "What have you ruled out?" and let them drive. With the senior you say, "Tell me if you want a second pair of eyes," and get out of the way.
Applying one style to everyone is the most common mentoring failure. Over-direct a senior and they disengage; under-support a junior and they stall or quietly burn out. Reading the person, not the playbook, is what makes mentoring actually land.