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WiFi RF Engineer

Ajax Systems· Device Division – Device HW Department
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KyivFull-timePosted 9mo ago

About the role

RF Engineer role in the Video Devices sub-unit focused on RF design, integration, and full product lifecycle for video devices, including antenna design, Wi‑Fi, multi-band systems, EMC/EMI, and certification processes.

Responsibilities

  • Full lifecycle responsibility for RF part of the product from concept to mass production.
  • Design and modeling of antennas for series production using EM simulators (HFSS, CST).
  • Align and optimize RF paths (Matching Networks) for 50 Ohm impedance.
  • Select and optimize RF components (RF chipsets, filters, PA, LNA) per technical requirements.
  • Select ready-made antenna solutions (modules) for specific project needs.
  • Conduct comprehensive testing of RF system parameters (TX/RX performance) in in-house and external labs.
  • Analyze and address discrepancies in receiver/transmitter parameters to meet standards.
  • Model, verify, and test EMC/EMI aspects of complex integrated systems during development.
  • Consult Certification department on RF requirements (RED, FCC), prepare relevant documents and testing protocols.
  • Support manufacturing by optimizing existing RF solutions and developing calibration/test methods for mass production.

Qualifications

  • Minimum 3+ years of experience as RF engineer or related wireless systems development.
  • Practical experience in multi-band systems including GSM/LTE, Wi-Fi 2.4/5 GHz, Bluetooth, Sub-GHz (LoRa/Zigbee).
  • Deep Wi-Fi expertise in 2.4 GHz and 5 GHz bands (802.11 a/b/g/n/ac/ax).
  • Antenna design and integration experience (FPC, PCB, Ceramic).
  • Antenna testing in an anechoic chamber for efficiency, gain, and pattern.
  • Proficiency with RF instrumentation: Vector Network Analyzer (S-parameters), Spectrum Analyzer, RF testers (Anritsu/Keysight) or Noise Figure Meter (advantage).
  • CAD/EM simulation experience: Keysight ADS, CST Studio, HFSS, or Cadence AWR (Microwave Office).
  • Experience solving EMI/EMC issues at circuit and routing levels; familiarity with RED and FCC certifications.
  • Strong understanding of RF design practices and validation methodologies.

Skills

Required:RF design and integrationEMC/ EMI testing and certificationVNASpectrum AnalyzerEMC/EMI testingEMC/EMI Standards

Benefits

  • Competitive salary
  • Medical insurance
  • Corporate English lessons
  • Opportunity to participate in internal beta security projects
  • Partner discounts
  • Employee product discounts
Last updated Oct 21, 2026. Interested? Apply on the company site.
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Ajax alarm system includes everything you need to protect your property | Professional home security system that combines CCTV, fire alarm and automation

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