Preheat your oven to 350°F. In a small bowl, mix the coarsely ground coffee, sea salt, black pepper, garlic powder, onion powder, chipotle powder, chili powder, and cumin
Transfer the skillet to the preheated oven and roast the tri-tip for 15-20 minutes, or until the internal temperature reaches 135°F for medium-rare. Use a meat thermometer for accuracy.