Pat the salmon fillet completely dry with a paper towel and season both sides with a pinch of sea salt.
Heat the avocado oil in a stainless steel or cast iron skillet over medium-high heat until shimmering.
Place the salmon in the pan skin-side down and press gently with a spatula for 10 seconds to ensure even contact.
Sear for 4-5 minutes without moving it until the skin is golden and crisp, then flip and cook for another 2 minutes.
Remove the salmon from the pan and set aside to rest while you cook the vegetables.
In the same skillet, add the green beans and two tablespoons of water, then cover with a lid for 2 minutes to steam.
Remove the lid, add the minced garlic, and sauté for 1-2 minutes until the water has evaporated and the beans are tender-crisp.
Fluff the pre-cooked quinoa and place it on a plate, topping it with the salmon and serving the garlic beans on the side.
Drizzle the lemon juice over the fish just before serving for a bright, fresh finish.