Select SAUTE mode on the Instant Pot. Add the oil. Once hot, add the beef (you may need to do two batches) and let it brown on all sides. Transfer to a plate.
Add the onion and garlic and saute in the pot for 1 minute. Add carrots, potatoes, tomato paste, and herbs. Stir and cook for 30 seconds. Pour in broth, Worcestershire sauce, and soy sauce. Scrape the bottom loosen any browned bits that formed while cooking the beef.
Close lid and lock. Makes sure the valve is switched to sealing.
Select MANUAL mode (high pressure) for 28 minutes. Once the time is up, let the pressure release naturally for 10 minutes, then switch the valve to venting. Once the pressure valve has dropped, carefully open the lid.
Select SAUTE mode. Add the peas. Whisk together cornstarch and cold water, once the mixture in the Instant Pot is simmering, add the slurry. Stir and allow the mixture to thicken, about 2 minutes.
Turn Instant Pot off. Season to taste. Serve with freshly chopped parsley, if desired.