Bring a large pot of salted water to a boil and cook the linguine according to package directions until al dente.
While the pasta cooks, peel and devein the shrimp, then pat them dry with a paper towel and season with sea salt and black pepper.
In a large skillet over medium heat, melt the ghee with the olive oil.
Add the minced garlic and red pepper flakes to the skillet, sautéing for about 1 minute until the garlic is fragrant but not browned.
Add the shrimp to the skillet in a single layer and cook for 2 minutes per side until they turn pink and opaque.
Reserve 2 tablespoons of the pasta cooking water, then drain the linguine.
Add the cooked linguine, reserved pasta water, and fresh lemon juice to the skillet with the shrimp.
Toss everything together for 1 minute to coat the pasta in the garlic sauce.
Remove from heat, garnish with freshly chopped parsley, and serve immediately.