Wtf does he work at homebase?

Or whatever that DIY store was called? I mean, he's obviously highly skilled and highly intelligent. I get that he may have wanted to put his old life behind him and all that but there are so many other things he could have done (and get paid more than close to minimum wage)
Infact, I kinda found it pretentious and hypocritical that he kept telling people they could be so much more than they could be when he himself was doing a job a 17yr old kid could do.

.. Or did I miss something?