See the below video on the coaching delivery methodology:
Learning Cloud technologies through basic skills are not enough to understand the Infra domain knowledge. One need to step into the shoes of project level tasks planning/designing/building is mandated to succeed in the job role.
Finally, with all of your efforts you are not comfortable with the HR pushed candidates, through the top management pressures.
Now how to smoke test the joined person ?:
Step1:Just have a call with the new joinee. Record his voice and compare it during the interview you did recording. If it is different, obviously he used the Proxy services to fake his selection process.
Step2: Check his resume. You compare with your current project tasks. Identify one task and give him to complete infront of you. If he is fake guy, he will do lot of work around.
Step3: Ask him to orient one of your development team members on his recent process followed and implemented the cloud/DeveOps tasks. Where that task is more relevant for your current project need.
Step4: If he is succeeded in the above tasks, identify some more tasks. If he is through you don’t need to worry. He is a capable guy.