Japanese phrase
___から在籍しています。 ___ ka ra zai seki shi te i ma su
Meaning
I have been with the organization since ___.
When to use it
Marks the starting point of ongoing membership. It is polite and somewhat formal, so it fits schools, workplaces, and other groups.
Example dialogue
こちらにはいつから在籍していますか？ ko chi ra ni wa i tsu ka ra zai seki shi te i ma su ka
When did you join this organization?
4月から在籍しています。 4 tsuki ka ra zai seki shi te i ma su
I have been with the organization since April.