組んでる

are teamed up, are working together

→ 組む
verb · informal Rare #43,296
are teamed up, are working together Colloquial contraction of 組んでいる.
JA: あの二人はずっと組んでる。
EN: Those two have been working together for a long time.
Conjugation of 組む
Indicative
組んでる

組んでるんだってな

I hear you’ve teamed up.

— イノセンス (2004)

おまえら二人でまだ組んでると思ってた

I thought you two were still working together.

— レザボア・ドッグス (1992)

俺とジョーは長年組んでるんだ

Joe and I have been partners for years.

— レザボア・ドッグス (1992)