Big Science Sweden is seeking a Senior Mechanical Engineer for the CTAO-South project at the La Silla Paranal Observatory in Chile. This role involves overseeing procurement, installation, and operation of mechanical systems, including power generators and handling equipment. The successful candidate will also facilitate the installation of Cherenkov telescopes and assist in maintenance operations. Candidates should possess a strong technical background in mechanical engineering, experience in site operations, and excellent problem-solving skills.