Senior RF Engineer - Satellite & Wireless (On-Site)

ISG International Service Group in Barcelona is seeking a Senior RF Engineer to design, develop, and optimize RF circuits and subsystems for advanced wireless and satellite systems. You will model, simulate, and test across UHF/L-Band/S-Band, collaborate with cross‑functional teams, and drive performance improvements throughout the lifecycle.

The role requires a strong RF background, 5+ years of experience, and the ability to work on-site in Spain.