Owns strategy, growth, retention, profitability, and executive relationships for a designated strategic aerospace and defense customer. Leads account planning, business development, competitive pursuits, negotiations, forecasting, quarterly business reviews, and cross-functional execution across sales, product management, supply chain, operations, quality, finance, and leadership. Develops customer intelligence, expands market share, protects existing business, and drives profitable revenue growth while ensuring compliance with ITAR and EAR requirements.