Some steampunk possibilities :
The Iron Wyrm Affair by Saintcrow, Lilith
"Multigenre talent Saintcrow (Angel Town) launches a delicious steampunk alternate London that pays more than a little stylistic homage to Sherlock Holmes, adding additional excitement in the form of magical duels, backstreet chases, battles with giant mecha, and confrontations with ancient wyrms and gryphons." Publisher's Weekly This is 1st in a series.
Dead Iron by Monk, Devon
"In the small town of Hallelujah, Oregon Cedar Hunt earns his way by tracking down beasts and lost items. When a small boy goes missing, Cedar is determined to find him. He enlists the help of the Madder brothers, crazy mountain-men devisers who invent amazing contraptions. In return for their help, Cedar must find the Holder, a mysterious machine that can open the door between this world and that of the Strange, where unearthly creatures roam." Publisher's Weekly Also the beginning of a series.
Edited to add Young Adult possibility :
While not quite steampunk, I also enjoyed the Lunar chronicles series-- Cinder, Scarlet, and Cress by Meyer, Marissa.
This series is a mash-up of fairy tales & science fiction beginning with a Cinderella who is a human cyborg working as a mechanic when she meets her prince.