Planning engineers decide and develop the most appropriate economic models and engineering methods for projects. They work in a variety of fields such as civil engineering or construction. Planning engineers are normally onsite during an engineering project to supervise all stages of work and provide solutions. Most planning engineers work full-time alongside a wide number of teammates, such as site managers, surveyors, and engineers, to ensure a project runs on schedule and that materials are sufficient. Successful planning engineers are comfortable working in fast-paced environments.