Software Engineer – GUI & Embedded Systems

EFA GROUP comprises companies in Aerospace, Security, Defense, and Industrial Cooperation with a solid international presence. EFA GROUP currently employs more than 400 people, the majority of whom are engineers and scientists. Headquartered in Greece, the Group maintains a strong international presence across Europe (Cyprus, Belgium, Switzerland, Estonia, and Germany), Asia (Singapore, Indonesia, and South Korea), the Middle East (UAE), and the United States, serving customers in 34 countries worldwide.

The GROUPincludes EFA VENTURES (Supply Chain Management and integrated services), AEROSPACE VENTURES (Industrial Participation and related services), SCYTALYS (Systems Integration and Software), ES SYSTEMS (MEMs & IoT Integration), EPICOS (Global Defense B2B Information Platform), UCANDRONE (Unmanned Systems), AETHER AERONAUTICS (Target Drones), STHENOS AI (Intelligence Solutions), THYREOS CYBER (cyber security), SUPERIOR AIR (aviation services and specialized aerial missions), SSMART (defense hardware - software production and services).

The Role

EFA GROUP is looking for an experienced and motivated Software Engineer who will contribute to the development of user-facing applications and embedded software. This role combines GUI development, systems integration, and firmware programming.

Key Responsibilities

• Design and develop graphical user interfaces (GUIs) using Python frameworks such as PyQt or Tkinter
• Develop and maintain cross-platform applications using technologies including Python, C++, Java, and Visual Studio
• Collaborate closely with hardware engineers to integrate software with embedded systems and RF platforms
• Support firmware development and programming for microcontrollers such as STM32 and PIC
• Debug, test, and optimize software-hardware interactions to ensure reliable system performance
• Write clean, modular, and maintainable code following best practices and version control workflows
• Contribute to the development of control software for SDR-based systems and RF test platforms
• Participate in Agile development activities, including sprint planning, code reviews, and team collaboration
• Research and evaluate emerging technologies related to embedded systems, software development, and GUI frameworks

Requirements

• Strong programming skills in Python and experience developing graphical user interfacesBachelor's or Master's degree in Computer Science, Software Engineering, Electrical Engineering, or a related field
• Familiarity with C++, Java, Visual Studio, or similar development environments
• Ability to collaborate effectively within multidisciplinary engineering teams
• Strong analytical, troubleshooting, and problem-solving skills
• Willingness to learn and contribute to firmware development activities

Nice to Have

• Experience with embedded systems and microcontroller programming
• Exposure to Software Defined Radio (SDR) platforms and digital signal processing environments
• Knowledge of communication protocols such as UART, SPI, and I2C
• Experience in defense, aerospace, telecommunications, or industrial automation projects
• Familiarity with CI/CD pipelines and modern software development practices