Position: Fullstack Tech Lead (React + NodeJS)
Category: Node.js
English level: intermediate
Years of experience: 11

I have experience working as a 'Full-Stack Tech Lead' in a big fintech company and experience to develop a big billing system from zero to production.

Also, I worked in a software company for a long time, having a team that could lead more than five big projects and finishes them. Before I join, they haven't had the same results.
I have been working as a dev last fifteen years. My last job is a simple developer, but the project is very complicated: we are developing a multi-service management system that helps scientists to learn artificial intelligence. 
Aws, azure, more than 16 services in multiple time zones, the core of the system was written NodeJS - overall not boring. 
I had an experience in management,  but I prefer developing and designing.
I'm interested in official employment in accordance with the laws of Poland or the EU. I guess that help would be the main benefit for me.
Please do not offer me "Upper level" variants! My real level is uncertain intermediate (B1 if I'm not mistaken).

The last my work didn't need English ( working with Chinese  ), so the level got worse. I try to keep it, but I need real live conversation, but it is not possible, frequently.