The MongoDB Intern Series: From a Public University to a Private Company` highlights Joseph Pena's journey from being hesitant to apply for an internship at MongoDB due to his public university background, to discovering the company's diverse and inclusive culture. He found that despite initial concerns about the organization's reputation, he was accepted into the program and has since learned from a talented team of engineers, gained valuable experience in backend development, and developed skills in software deployment. The company's emphasis on celebrating all aspects of its business, including technology, sales, and engineering, resonated with Pena, who values diversity and inclusion. Through his internship, he has not only grown professionally but also discovered the importance of hard work and perseverance in achieving success.