Antonio Spavone will graduate to the GP3 Series this year after signing for championship newcomer Trident Racing.
Spavone, 17, joins his fellow Italian Vicky Piria in the line-up, having tested for the team at Estoril last month and again at Barcelona on Monday.
"I'm incredibly happy to have this great chance in such an important series like GP3," Spavone said.
"After the first test at Estoril the support I hoped for finally materialised. As I had been really satisfied with the job done with Trident Racing in Portugal, it's been a logical step for me to sign with them for a full-time assault.
"I know there will be plenty of work to do and I'll face some very experienced drivers. My goal is to clinch a top 10 spot as fast as possible. I expect to grow stronger at each race and battle for points in the second half of the championship."
The third spot at Trident has yet to be filled. Auto GP champion Kevin Ceccon drove for the team at Barcelona on Monday while Yuki Shiraishi has also tested this year.