In 2015, Joseph enrolled at Pepperdine University, which is located in Malibu, California. When he graduated in 2019, Schwarzenegger attended his son’s graduation day and posted a sweet and supportive message on his Twitter page. However, after Joseph graduated, he found out that his father would no longer be supporting him financially.
After he graduated from college, Baena decided to follow in his famous father’s footsteps and tried his hand at the entertainment industry. In 2022, he made his film debut in the film Chariot, and later also appeared in Bully High. He also had a role in TV miniseries Scam Squad and also appeared on the 31st season of Dancing with the Stars.