Parsons Corporation is an American multinational technology-focused defense, intelligence, and infrastructure engineering firm. Founded in 1944, Parsons is headquartered in Chantilly, Virginia, and serves both government and private sector organizations in more than 30 countries. Parsons became a public company after its initial public offering in 2019. It was included in the Fortune 1000 in 2020 and added to the S&P 400 in 2024. As of late 2025, Parsons employs over 21,000 professionals worldwide. Wikipedia