RF Engineer

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 GROUP includes 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 RF Engineer responsible for the design, development, and validation of RF and microwave circuits. The engineer will also support cross-functional projects across the corporate group, contributing to initiatives involving radio systems, radars, and UAVs.

Key Responsibilities

• Design RF and microwave circuits for Electronic Warfare systems at PCB and transistor level
• Develop transmitter and receiver chains, from DAC to antenna output and from antenna input to ADC
• Design, test, and validate RF subsystems for operation in harsh environmental conditions
• Support the development of radio systems, missile data links, and related RF technologies
• Provide expertise in RF system design, antenna integration, and wave propagation across the Group
• Participate in antenna selection, placement, and electromagnetic performance assessments
• Utilize RF design, simulation, and analysis tools for circuit, antenna, and propagation studies
• Prepare technical documentation and support Technical Data Package (TDP) generation
• Assist with RF system integration, troubleshooting, and production support activities

Requirements

• Bachelor's or Master's degree in Electrical Engineering, Telecommunications, or a related field
• 4+ years of experience in RF and microwave circuit design
• Experience designing RF systems for harsh and mission-critical environments
• Strong understanding of transmitter and receiver architectures and RF signal chains
• Familiarity with RF simulation, antenna design, and wave propagation analysis tools
• Strong analytical, troubleshooting, and problem-solving skills
• Ability to work both independently and within multidisciplinary teams