In a large pot of boiling salted water, cook pasta according to package instructions. Drain and transfer to a large bowl.

Heat a large skillet over medium-high heat. Add ground beef, breaking up meat with a wooden spoon. Season with taco seasoning, salt, and pepper, and cook until meat is no longer pink, about 6 minutes. Drain excess fat.

Make dressing: In a small bowl (or liquid measuring cup) whisk together olive oil, lime juice, and cumin. Season with salt and pepper. Pour over pasta and toss to combine.

Add ground beef, corn, black beans, and tomatoes to pasta and toss to combine. Fold in cheese and green onion.

Serve warm or at room temperature.