Network18 Media & Investments Limited announced key appointments in its editorial leadership team. Karthik Subbaraman has been appointed as the Managing Editor for the network's digital news operations, and Vivek Narayan joins to head the regional language network in South India as the Managing Editor, overseeing news channels in Karnataka, Kerala and Tamil Nadu. The announcements are in line with the incremental growth of the network's audience base and ever-evolving market dynamics. Prior to his new role, Karthik has been with the network for nearly four years as the editor overseeing three southern channels, a responsibility he will pass on to Vivek Narayan. A consummate news hound with expertise across genres spanning general news, business, tech/start-ups and international relations and a delightful writer of prose, Karthik Subbaraman will from now on oversee the editorial operations of all Network18's digital properties, with the editors of News18 (English, Hindi and languages), Firstpost, Moneycontrol, cnbcv18.com and the central digital videos team reporting to him. A long standing TV news professional and having worked with India's prime news brands, Vivek Narayan last served as the Executive Editor and Head of Output at Times Now. At Network18, he will undertake the previous responsibilities of Karthik Subbaraman and will be based in Chennai. Vivek started his career as a reporter at Network Television in Thiruvananthapuram in 1994 before moving on to stints at Asia Pacific Communication and Eenadu TV in New Delhi. He then worked at the TV Today Network in Delhi and Kerala for five years, until 2005. Both Karthik and Vivek will report to Santosh Menon.