When something happens regularly or is a permanent situation we usually use the simple present tense. When using the simple present the verb (with the exception of the auxiliary verbs) remains in the dictionary form (verb + s with he/she/it).
Simple Present Timeline
For example:
Q) "Where do you live?" A) "I live in Germany."
Q) "Where do es he live?" A) "He live s in Germany."
Q) "What do you do?" A) " I'm a teacher."
Q) "What do es he do?" A) " He's a teacher."