> Markdown version of [/jobs/ext/2948593-c-senior-barcelona](https://www.wearedevelopers.com/jobs/ext/2948593-c-senior-barcelona). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # C++ Senior - Barcelona - **Company:** Social you - **Location:** Barcelona, Spain - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Unit Testing, C++ (Programming Language), Memory Management, MySQL, Scrum Methodology, SQL Databases, Data Streaming, Multithreading, Information Technology, Apache Kafka, Restful APIs, C++14, Docker, Microservices - **Published:** September 16, 2026 - **Apply:** https://www.buscojobs.com.es/c-senior-barcelona-en-barcelona-ID-372118676 ## About the Role OverviewIn this Senior C++ role, you'll design and optimize high-performance software for the aeronautical domain. You will collaborate with cross-functional teams to deliver scalable applications and robust services. You'll work on modern C++ (C++17), multi-threaded systems, and microservices in a hybrid Barcelona setup. This position offers a hands-on challenge to shape critical software that touches real-time operations and data flows, while growing your career within the company. ResponsabilidadesDevelop performant, scalable C++17 applications Implement unit tests with GoogleTest Work with REST APIs, Kafka queues, Docker, and microservices Solve complex problems related to multi-threading, sockets, memory management, and exception handling Collaborate in an Agile/Scrum environment and communicate effectively Requisitos principalesBachelor in Computer Science or related field 5+ years of development experience C++17 (preferred) GoogleTest for unit testing Experience with REST API, Kafka, Docker, microservices Advanced programming concepts (multi-threading, sockets, synchronization, memory management, exceptions) SQL/MySQL Strong problem-solving and teamwork skills Excellent written and verbal communication; English C1; Spanish min. B1 proactive highly motivated excellent communication C++17 GoogleTest REST API ## Description OverviewIn this Senior C++ role, you'll design and optimize high-performance software for the aeronautical domain.You will collaborate with cross-functional teams to deliver scalable applications and robust services.You'll work on modern C++ (C++17), multi-threaded systems, and microservices in a hybrid Barcelona setup.This position offers a hands-on challenge to shape critical software that touches real-time operations and data flows, while growing your career within the company.ResponsabilidadesDevelop performant, scalable C++17 applicationsImplement unit tests with GoogleTestWork with REST APIs, Kafka queues, Docker, and microservicesSolve complex problems related to multi-threading, sockets, memory management, and exception handlingCollaborate in an Agile/Scrum environment and communicate effectivelyRequisitos principalesBachelor in Computer Science or related field5+ years of development experienceC++17 (preferred)GoogleTest for unit testingExperience with REST API, Kafka, Docker, microservicesAdvanced programming concepts (multi-threading, sockets, synchronization, memory management, exceptions)SQL/MySQLStrong problem-solving and teamwork skillsExcellent written and verbal communication; English C1; Spanish min.B1proactivehighly motivatedexcellent communicationC++17GoogleTestREST API