คุณเพิ่มวิศวกรใหม่อย่างมีประสิทธิภาพได้อย่างไร

WEEK 1  — environment runs, first tiny PR merged, knows who's who
WEEK 2-3 — owns a small real task end to end
MONTH 1 — comfortable in the core codebase and workflow
MONTH 2-3 — contributing independently on normal work

Provide: a buddy, a written setup guide, a starter task list,
and a clear "who to ask about what" map.