Jenkins job need to do ssh for 50 different nodes

I am looking for a freelancer who can help me with my Jenkins job that needs to do SSH for 50 different nodes. and run a shell script. Currently i am facing the permission issues. Need to help resolve the permission issue to connect to a data node .My current setup is a Cloudera Manager cluster . I prefer both password and public key-based SSH authentication methods. Additionally, there are specific configurations and plugins required on the Jenkins nodes, which I will specify to the selected freelancer.

Ideal Skills and Experience:
- Strong experience in Jenkins and its setup
- Expertise in SSH authentication methods, especially password and public key-based
- Knowledge of Jenkins configurations and plugins
- Ability to work efficiently and complete the project within the given deadline