Star Robotics is seeking a Senior Software Engineer with a PhD to lead software for autonomous robotic arm manipulation. You will design, implement and validate software integrated with robotic hardware on client projects in a cross‑functional team. The role emphasizes ROS2, Ubuntu, C++, Python, and hands-on work with real robots in an on‑site environment in Madrid. Fluent Spanish is required, with room to grow in a fast‑moving robotics startup.