* Junior (as in a younger person with the same name): You'd typically use "hijo" (son) or "junior" (used as is, it's understood in many Spanish-speaking contexts). For example, "Juan Pérez Jr." could be "Juan Pérez hijo" or "Juan Pérez Jr."
* Junior (as in a lower-level position): This would require a more descriptive phrase, depending on the context. For example:
* Junior employee: `Empleado junior`, `empleado principiante`, `trabajador junior`
* Junior partner: `Socio junior`, `socio principiante`
* Junior high school: `Secundaria`, `instituto` (the term "junior high" doesn't directly translate and the equivalent varies by region)
Therefore, you need to provide the context to get the most accurate translation.