Freelance Project Opportunity – Senior Software Engineer (Madrid, Hybrid)We are looking for a Senior Software Engineer to join a 6‐month freelance project in Madrid.This is a hybrid role with regular on‐site work required. Key Skills & Experience:Strong background in C/C++ development for embedded systemsProficiency in LinuxExperience in software design & architecture for real‐time sensor applicationsKnowledge of CI/CD processes and version controlFamiliarity with SoC platformsAbility to analyze and refactor legacy C++ codeExperience with API design & development (REST, ONVIF, CGI)Strong knowledge of internal protocols: MQTT, serial communication, socketsLocation: Madrid (Hybrid, regular on‐site presence)Duration: 6 months freelance contract