No, I wouldn't take that job. If you take the job, I believe you are personally responsible for killing that person, doesn't matter if it's for the state or for someone else. YOU have blood on your own hands. As a child I've seen lethal injection being administered to dogs. It was frightening.
I think it would be harder to pull the switch for the electric chair, wouldn't it?
I don't think so. With lethal injection you have to listen to them lay there, gurgle, and gasp for however long before its over. Which is why I always say I'd rather go by hanging or firing squad.
Whichever it is, the executioner is taking part in killing someone helpless and in a lot of cases even innocent. This is something he may have to answer to in the place he goes after death. If there is any kind of Hell, he could end up there. The death penalty really is just another form of murder.
I have heard that for those who carry out the executions (executioners and even guards who escort the prisoner into the death chamber) often suffer emotional stress. I had heard or read somewhere that because of the high stress factor that after working a certain number of executions the correctional officers are re-assigned out of the execution squad. I don't know how true that is or if it was just one specific jurisdiction's procedure.