Alex Rider

The Alex Rider Series by Anthony Horowitz
AR page
Stormbreaker (Rating: 3.5 / 5 stars)

Point Blank (Rating: 4 / 5 stars)

Skeleton Key (Rating: 3.75 / 5 stars)

Eagle Strike (Rating: 4.25 / 5 stars)

Scorpia (Rating: 4.25 / 5 stars)

Ark Angel (Rating: 4.75 / 5 stars)

Crocodile Tears (Rating: 4 / 5 stars)

Wikipedia, web home

This series is about a teenage orphan who is forced to be a super spy by MI-6, the British national intelligence agency. Alex's dad was a double agent, killed by a bomb in a plane (set off by the best man at his wedding).  Alex Rider worked twice with the CIA, and once by himself. These are action adventure, a very good series.
For the whole series I give 3.75 stars
The series has finished, but the author is write a few side books about minor characters (Yassen).