This document provides an overview of mechanical engineering careers. Mechanical engineering deals with subjects like thermodynamics, engines, machine design, and fluid mechanics. Mechanical engineers work in industries like manufacturing, automotive, aerospace, power plants, and heating and cooling systems. Career opportunities for mechanical engineers include research and development, design, production, quality control, maintenance, projects, sales, and teaching. Government sector jobs are available in railways, defense, public sector companies, and engineering services. Private sector jobs are found in automotive, oil and gas, aerospace, and other major industries. Further studies and international opportunities are also discussed.