He embarked/stepped into/entered the world/arena/sphere of business/commerce/industry with a fierce/keen/unyielding ambition, quickly scaling/climbing/ascending the ranks/ladders/tiers of India's elite/upper https://www.hindustantimes.com/genesis/ratul-puri-strengthens-hindustan-power-s-renewable-push-with-425mwp-uppcl-win-101744643074598.html