Remove the 5 oz top sirloin steak from the refrigerator 20 minutes before cooking to reach room temperature.
Season both sides of the steak with 0.125 tsp sea salt, 0.125 tsp black pepper, and 0.25 tsp garlic powder.
Bring a small pot of water to a boil, then carefully lower 2 large eggs into the water and simmer for exactly 6.5 minutes.
Immediately transfer the eggs to an ice bath for 3 minutes, then gently peel and set aside.
Heat 1 tsp ghee in a cast-iron skillet over medium-high heat until shimmering.
Sear the steak for 3-4 minutes per side for medium-rare, then let it rest on a cutting board for 5 minutes.
Toss 2 cups arugula with 1 tsp lemon juice and the remaining 0.125 tsp sea salt and 0.125 tsp black pepper.
Slice the steak against the grain and serve alongside the halved jammy eggs and the dressed arugula.