He will replace Mark Caylor, who has been elected corporate vice president and president, Enterprise Shared Services at Northrop Grumman, effective Jan. 1, 2013. Natarajan will continue to serve as vice president, Tax, and have responsibility for tax initiatives across the company, including the implementation of tax strategies; research of complex tax issues; compliance with all international, federal, state and local regulatory filings; analysis of tax legislation and provision of tax-consulting services to the company's business sectors. Natarajan joined Northrop Grumman in 2011 as vice president, Tax, from The AES Corporation, where he worked for more than 10 years in positions of increasing responsibility. Prior to his work for AES, Natarajan worked for PricewaterhouseCoopers, LLC as a senior manager in their Global Tax Optimization Planning team.