Not after the War, but he would give orders directly for people to be executed - if he didn't like the prison sentence someone had got, he would increase it. For example, a Jew who committed a petty crime and got two and a half years had his sentence stepped up to execution. In essence, Hitler portrayed himself a political leader, not a mass murderer. (If he had killed anyone personally, people who didn't need to know would have found out.) When I say he was a political leader: his politics, however, involved using the SA and the SS, especially the Totenkopf, to kill, torture or maim individuals and he approved plans with use of forced labour, such as Goering's Four Year Plan. He was an extremely unreliable worker (despite propaganda messages to the opposite) and his way of ruling within the party was to give out vague and overlapping duties to various officials who then argued amongst themselves - largely about how things were to be done and who should do them. This meant no-one could take over his position as Fuehrer.
Also, Hitler did not want any Herrenvolk (Aryan Germans) to die if not absolutely necessary. The only people he wanted to kill were lesser races such as the Slavs, Untermenschen and Lebensunwertes (Africans, Jews, gypsies) as well as people who undermined the regime such as prostitutes and drunks. He was too important to kill any of these people himself however. Even in the Night of Long Knives, he left the killing to the SS.
There's no doubt he organised the mass murder of millions of people, but he never killed anyone himself - apart from himself.