A Project Planning Engineer devises and manages project schedules and plans to ensure efficient, timely, and budget-conscious completion of engineering projects. Key responsibilities include creating detailed project plans and schedules, estimating resources (labor, materials, costs), monitoring progress, identifying and mitigating risks, and coordinating with project managers, engineers, and other stakeholders. They often use software like Primavera or MS Project to track milestones, manage project timelines, and generate reports for performance analysis and communication.