python django CSRF developer needed to fix a BUG with an existing system

We have recently discovered a BUG on a web application developed with Python, Django Framework running on Linux Ubunto platform under AWS. The BUG was recently discovered and we have older versions of the application running under separate servers without this BUG.
Candidate must be a SOLO developer, working freely and interactively with us, and must be fluent using GitHuib where our branch of code is kept.