Job Summary: We are seeking a C++ Programmer to develop critical and advanced solutions for the aviation industry, optimizing flights using real-time weather information in a collaborative environment. Key Highlights: 1. Development of critical solutions for the aviation industry in modern C++. 2. Collaboration with high-performing teams in an agile and innovative environment. 3. Opportunity to propose new ideas and apply AI in development. Would you be interested in continuing your professional growth as a **C\+\+ DEVELOPER** at a leading multinational technology company, collaborating with high-performing teams on the **development of critical solutions for the aviation industry**, within a collaborative and agile environment where you can propose new ideas? Oxigent Technologies is looking for a **C\+\+ PROGRAMMER** to join an innovative project in the aeronautical sector, focused on developing advanced solutions for flight planning and optimization using real-time weather information. What will be your main responsibilities? * **Design, develop, and optimize complex components** in **modern C++ (C\+\+20).** * Work with and maintain the build system using **CMake.** * Create and execute unit tests using **GTest.** * **Work in Windows and Linux environments** with Visual Studio, GCC, and Clang. * Design, integrate, and maintain **microservices.** * Analyze, debug, and improve complex code to ensure performance and reliability. * Manage repositories and workflows using Git. * **Collaborate with cross\-functional teams** and document technical knowledge. * Apply AI practically to accelerate analysis, refactoring, and problem solving. What do you need to succeed? * **Degree in Computer Engineering, Computer Science, Telecommunications, or related fields.** * **7+ years of experience in C\+\+ development in complex environments.** * Experience with: **CMake, GTest, microservices, multithreading, memory management, debugging, optimization, Windows, Linux, Visual Studio, GCC, Clang.** * **Fluent English.** What do we offer? * **Permanent contract** through Oxigent. * **Competitive salary aligned with your experience** (up to €55,000 gross annual). * **Hybrid work model:** 3 days in the office (Poblenou) and 2 days remote. * **Training voucher** to support your professional development in areas of interest. * **Private health insurance.** * **Flexible compensation** applicable to health insurance, meals, transportation, childcare, and training. * **Gym and sports activities access app** with discounts across Spain. * And many more benefits! **Join the Oxigent team!** A company committed to sustainability and equal opportunities, where talent and technology know no gender. Location: Spain \- Barcelona Date: 02/04/2026 Salary: €50,000 Employment Type: Employee