<a href="https://www.amazon.co.uk/d/Books/Lies-Locke-Lamora-Scott-Lynch/0575079754" target="_blank">The <i>Gentlemen Bastard</i> series</a> by Scott Lynch
The Lies of Locke Lamora by Scott Lynch. First in the Gentlemen Bastards series. It's sort of like Oliver mixed with Ocean's Eleven.
The Lies of Locke Lamora (Gentleman Bastards): Scott Lynch