RF Engineer

Огляд

PaiDefence is a British-Ukrainian DefenseTech company building air defence systems already deployed on the frontlines. We push real technology to the battlefield — not demos, not paper specs. Our core value is impact for Ukraine: we build technology that makes a real difference where it matters most. We operate with a deep-tech mindset, pushing engineering rigour into every product we ship. We value ownership and responsibility — people who execute, deliver, and stand behind their results. We are looking for an RF Engineer to join our hardware team and work on the radio frequency subsystems of our detection and countermeasure products. You will work directly with signals, hardware, and real measurement data — not simulations.

Обов'язки

• analysis and improvement of RF signal paths in direction-finding and detection systems
• component selection datasheet review BOM compilation manufacturing assembly requirements
• RF measurements and prototype testing S-parameters VSWR insertion loss linearity spurious harmonics
• troubleshooting RF system issues impedance mismatch nonlinearity losses EMI EMC stability
• design optimization for efficiency size reduction cost power consumption
• preparation of technical reports documentation specifications

Вимоги

• hands-on experience designing RF systems
• deep understanding of transmission lines wave propagation S-parameters impedance matching active passive RF components
• practical experience with RF circuit design
• hands-on experience with SDR Software-Defined Radio
• proficiency with lab equipment VNA spectrum analyzer oscilloscope
• skills in diagnosing resolving RF performance issues EMI EMC instability self-oscillation spec non-compliance
• English reading technical documentation

Умови

• real impact work directly supports systems protecting Ukrainian forces on the frontline
• work within a senior engineering team direct senior-to-senior communication minimal overhead
• hands-on deep-tech environment with real hardware signals field feedback
• high ownership direct influence on technical decisions product direction
• office in central Kyiv 3 minutes from the metro
• full-time standard business hours