Depends how you want to use the word
tech.
For the US it usually means some successful SV FAANG type software company.
For Germany it's usually some successful hardware engineering company (Siemens, Bosch, Mercedes, Arri, Infineon, Continental etc.). Those companies can afford to pay the equivalent of FAANG wages in Germany albeit at a smaller scale.
Southern Germany has more experience and talent in the latter while Berlin has more software startups and web devs, similar to the former.