Grupo Oesía in Spain is seeking a Senior Mechanical Design Engineer to join a multidisciplinary team. You will design, develop and integrate electronic equipment used in high-reliability systems, performing structural and thermal analyses and preparing manufacturing drawings. The role requires hands-on SolidWorks, Ansys and FloTHERM experience, plus knowledge of materials and environmental testing. Proficiency in technical English is preferred and a strong analytical mindset is essential.