Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Wash and peel the carrots, then slice them into 1/2-inch thick rounds.
Trim any visible excess fat from the top sirloin and cut the beef into 1-inch uniform cubes.
In a large mixing bowl, whisk together the extra virgin olive oil, lemon juice, lemon zest, minced garlic, rosemary, thyme, sea salt, and black pepper.
Add the beef cubes and sliced carrots to the bowl, tossing thoroughly to ensure every piece is well-coated in the herb marinade.
Spread the beef and carrots in a single layer on the prepared baking sheet, ensuring they aren't overcrowded so they roast rather than steam.
Place in the oven and roast for 15 to 18 minutes, or until the beef reaches your preferred level of doneness and the carrots are tender-crisp.
Remove from the oven and let the beef rest for 5 minutes on the pan to lock in the juices before serving.