A Propulsion Engineer designs, tests, and optimizes propulsion systems for vehicles or spacecraft, critical for operational efficiency and safety. Key responsibilities include conducting performance analysis, developing prototypes, and collaborating on multidisciplinary teams. Required skills encompass advanced engineering knowledge, problem-solving, and data analysis. Typically working in labs or aerospace facilities, they interact with designers, analysts, and project managers. Career progression may lead to senior engineering roles or project leadership in innovative propulsion technologies.