Answer
Carlos Sainz Jr. started his Formula 1 career in 2015. He was signed by Toro Rosso, a team that has since been rebranded as AlphaTauri. Sainz drove for Toro Rosso for two seasons, before moving to Renault for the 2017 season. He then moved to McLaren for the 2019 season, and has been with the team ever since.