Position: Nodejs Senior / Tech lead
Category: Node.js
English level: upper
Years of experience: 6

Leading a team of backend developers
Designing applications and specific features
Writing technical documentation
Writing clean and extendable code
Performing code reviews
Investigating load issues and finding root cause
Mentoring
Taking part in recruitment process
Improving/leading related processes
Healthcare/gaming (but not gambling) projects/companies would be especially interesting. 

Projects written not only using Node.js are also interesting in terms of personal growth. Preferably: C#, Golang.