PFreelance Project Opportunity – Senior Software Engineer (Madrid, Hybrid) /ppbr/ppWe are looking for a strongSenior Software Engineer /strong to join a strongfreelance project /strong in Madrid. /ppThis is a stronghybrid role /strong with regular on‑site work required. /ppbr/ppstrong Key Skills Experience: /strong /ppbr/pulliStrong background in strongC/C++ development /strong for embedded systems /liliProficiency in strongLinux /strong /liliExperience in strongsoftware design architecture /strong for real‑time sensor applications /liliKnowledge of strongCI/CD processes /strong and strongversion control /strong /liliFamiliarity with strongSoC platforms /strong /liliAbility to analyze and refactor stronglegacy C++ code /strong /liliExperience with strongAPI design development /strong (REST, ONVIF, CGI) /liliStrong knowledge of stronginternal protocols /strong: MQTT, serial communication, sockets /li /ulpbr/ppstrongLocation: /strong Madrid (Hybrid, regular on‑site presence) /p