Linux Specialist for a short term project - 5 months

Our team is looking for a freelance programmer to assist in the security hardening of our system.
The specs are already written, and most of the work will be around the Linux installation scripts while utilizing the Jenkins.

Experience Requirements:
1) Linux OS knowledge is a must.
2) Network knowledge is a must.
3) Knowledge of the following scripting languages is a must: Bash, Python, Expect.
4) Knowledge of Linux Security is a plus.