A calibration engineer specializes in making fine-tune adjustments to various machine components using diagnostic software. The qualifications for a career as a calibration engineer are a bachelor’s degree in mechanical engineering and a Professional Engineer license. You need to pass the Fundamentals of Engineering (FE) exam to earn your initial license, then get relicensed every few years. As a calibration engineer, you need technical knowledge of the machines you service and excellent analytic problem-solving skills to carry out your duties. Your job may focus on diesel fuel engine development, chassis dynamometer testing, or vehicle engine development. You need experience with ETAS - INCA software tools to perform your job. You can find calibration engineers in a variety of industries, but they primarily work for automotive manufacturers.