In a blender or food processor, combine Scotch bonnet peppers, garlic, thyme, allspice, cinnamon, brown sugar, soy sauce, lime juice, vinegar, olive oil, salt, black pepper, and smoked paprika. Blend until smooth.
Place the beef in a large dish or resealable bag. Pour the jerk marinade over it, ensuring the meat is fully coated. Cover and refrigerate for at least 4 hours, preferably overnight.
Preheat the grill or oven to 400°F (200°C). If grilling, cook over direct heat for 6-8 minutes per side. If roasting, place the beef in the oven and cook for 25-30 minutes, flipping halfway through.
Remove the beef from heat and let it rest for 5-10 minutes before slicing. Serve warm with rice, slaw, or plantains.