Freelance Project Opportunity – Senior Software Engineer (Madrid, Hybrid) We are looking for aSenior Software Engineerto join afreelance projectin Madrid.This is ahybrid rolewith 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)