Java/Spring разработчик

Job description
We're looking for a Java developer with extensive experience with Spring and Spring Security (a few years of real-world work experience). On the non-technical side, a good level of English is also important.
You're going to be working on developing projects and written guides for teaching purposes, with a focus on different Spring modules (security, persistence, web, etc).
This includes creating new material based on our internal guidelines, as well as maintaining/upgrading the existing projects.
The rate for the role is 21$/h, and the time commitment is 7-10h/week.