One of her top five books with geeky heroes, as shared at Tor.com:
Leo Valdez, Inventor and MechanicRead about the other entries on the list.
Rick Riordan’s Heroes of Olympus series
Demigod Leo Valdez (perhaps my favorite character in the sequel series to Percy Jackson & The Olympians) is a son of Hephaestus, the Greek god of forges, blacksmiths, craftsmen, metals, and fire, which means that he has an innate talent for crafting machines and a dangerous pyrotechnic ability. He can understand and even sense machinery and has the ability to operate and repair anything mechanical. The prankster of the group of demigods, he mostly uses his skills to comedic effect, but when the need arises, he utilizes a magical tool belt to create and repair whatever machines or devices might help the heroes on their journey, repairs the broken Bronze Dragon of Camp Half-Blood, who becomes his companion throughout the series, and even builds an airship and cracks the Archimedes Sphere. Pretty brilliant for a sarcastic joker.