I have a broad experience with JobDSL jenkins plugin and shell scripting. I think that i can help you to solve your request.
Relevant Skills and Experience
Jenkins JobDSL plugin, Shell scripting (Bash, Ksh, Zsh)
Proposed Milestones
$40 USD - Implement authorization logic in groovy for further using in JobDSL for jobs generation
$50 USD - Implement main functions in groovy as library (using created authorization logic)
$30 USD - Perform basic integration checks (PoC)
$15 USD - Add additional functionality based on integration requirement
$20 USD - Test overall integration and add additional changes if it's needed based on testing session
Do you want to update User Stories/Subtasks by results of some jenkins jobs ?