As a Principal Packaging Engineer in a manufacturing setting, you will lead the design, development, and optimization of packaging solutions for new and existing products. This includes collaborating closely with R&D, quality assurance, supply chain, and production teams to ensure packaging meets performance, safety, and sustainability standards. You may also oversee testing, validation, and process improvements, as well as mentor junior engineers and participate in supplier evaluations. These responsibilities are critical for ensuring product integrity, customer satisfaction, and compliance with industry regulations while driving cost-efficiency.