Calspan JETS is the world's premier supplier of ground-based testing solutions for the aerospace industry. We deliver highly engineered facilities, electro-mechanical systems, and software specifically designed for jet engine testing. These solutions are used by airlines, OEMs, and MRO businesses to ensure the global fleet of jet engines tested daily are safe to fly. The Principal Systems Software Engineer will play a critical role in designing, developing, and maintaining Linux-based software solutions for the Data Acquisition and Control System (DACS) used in jet engine testing. This role involves architecting new features, optimizing system performance, integrating modern measurement hardware to enhance testing capabilities, providing technical leadership, maintaining comprehensive system documentation and adhering to best practices in software development and deployment.