My Mechanical Romance by Alexene Farol Follmuth (Author)

Enter Mateo Luna, captain of the club, who recognizes Bel as a potential asset—until they start butting heads. Bel doesn’t care about Nationals, while Teo cares too much. But as the nights of after-school work grow longer and longer, Bel and Teo realize they've made more than just a combat-ready robot for the championship: they’ve made each other and the team better. Because girls do belong in STEM.