Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
In a small bowl, mince the garlic and combine it with the dried rosemary, thyme, sea salt, black pepper, and half of the olive oil to create a paste.
Pat the top sirloin steak dry with a paper towel and rub the herb paste evenly over all sides of the meat.
Slice the carrots into rounds and trim the ends of the green beans, then toss them in a bowl with the remaining olive oil and a pinch of salt.
Place the seasoned beef in the center of the baking sheet and arrange the vegetables in a single layer around the meat.
Roast in the oven for 15 to 20 minutes, or until the beef reaches an internal temperature of 135°F for medium-rare and the vegetables are tender.
Remove from the oven and let the beef rest on a cutting board for at least 5 minutes before slicing thinly against the grain to serve.