ARQUIMEA, we are a technology company operating globally and providing innovative solutions and products in highly demanding sectors. Our areas of activity are Aerospace, Defense & Security, Big Science, Biotechnology and Fintech.
Main function and scope We are seeking a Defense Systems Engineer specialized in Software-Defined Radios to support the design, development, integration, verification, and deployment of advanced communications, electronic warfare, and mission-critical defense systems.
Support SDR system design, including RF front ends, waveforms, signal processing, embedded software, FPGA, and networking interfaces.
Perform RF and communications analyses, including link budgets, modulation performance, interference, coexistence, and resilience in contested environments.
Plan and execute integration, verification, validation, qualification, and field testing activities.
Troubleshoot system-level issues across RF, software, firmware, hardware, and networking domains.
Coordinate technical activities with hardware, software, FPGA, RF, cybersecurity, test, customer, and supplier teams.
Prepare technical documentation, test reports, design reviews, and customer-facing engineering material.
Bachelor’s or Master’s degree in Telecommunications Engineering, Electrical Engineering, Aerospace Engineering, Computer Engineering, Physics, or a related technical field.
More than 5 years of experience in defense systems engineering.




Experience in systems engineering for communications, RF, electronic warfare, radar, or defense systems.
Practical knowledge of Software-Defined Radio architectures and platforms.
Understanding of RF communications principles, modulation, coding, synchronization, filtering, spectrum management, and signal processing.
Experience with requirements management, system architecture, interface definition, and verification planning.
Familiarity with laboratory RF equipment such as spectrum analyzers, signal generators, vector network analyzers, oscilloscopes, power meters, and SDR test setups.
Ability to troubleshoot complex multidisciplinary systems involving RF, digital signal processing, embedded software, FPGA, and networking components.

Nice-to-have training / specific knowledge
Experience with tactical communications, military radios, datalinks, SATCOM, EW, SIGINT, ELINT, or radar systems.
Experience with SDR platforms such as Ettus/USRP, Analog Devices, Xilinx RFSoC, LimeSDR, Red Pitaya, or defense-grade SDR hardware.
Knowledge of GNU Radio, MATLAB/Simulink, Python, C/C++, VHDL/Verilog, or embedded Linux.
Familiarity with waveform standards, military communication protocols, or NATO/STANAG-related systems.
Experience with model-based systems engineering tools such as Cameo, Capella, Enterprise Architect, DOORS, Jama, Polarion, or similar.
Experience in field trials, military exercises, or customer acceptance testing.

📌 Defense Systems Engineer - SDR Specialist (Madrid)
🏢 Arquimea
📍 Madrid