ashby
RF Systems Engineer
Specter
San Francisco, USA
Full-time
Senior
Onsite
Discovered Yesterday
MATLABSimulinkNS-3VNAspectrum analyzerOTA chamber
Free
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MATLABSimulinkNS-3VNAspectrum analyzerOTA chamber
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Responsibilities
- Lead RF and wireless system architecture: modeling, trade studies, and performance validation across Wi-Fi HaLow (802.11ah), 802.11, LTE, 5G NR, and long-range sub-GHz systems
- Root-cause and optimize performance across PHY, MAC, and network layers
- Test interoperability with third-party devices and ensure standards compliance across multiple wireless subsystems
- Develop automated RF planning and deployment modeling tools, enabling topology optimization, coverage prediction, and pre-deployment performance estimation
- Collaborate with firmware and software teams to expose critical RF and network health metrics into the telemetry pipeline
- Define multi-radio system architectures for long-range backhaul and high-throughput paths across heterogeneous radios
- Build simulation, modeling, and test infrastructure (MATLAB, Simulink, NS-3, automated bench workflows)
- Drive field validation and OTA testing across industrial, logistics, and large-area deployments
- Work cross-functionally with hardware, firmware, and software teams to ensure reliable RF performance in complex environments
- Optimize end-to-end system behavior across routing, addressing, QoS, NAT, DHCP, VLANs, and multi-radio backhaul paths
Qualifications
- Strong background in RF system modeling, link-level simulation, and channel modeling
- Deep expertise in 802.11 PHY/MAC—especially 802.11ah (HaLow)—or similar low-power, long-range RF technologies
- Experience with RF field surveys, propagation analysis, and deployment validation
- Strong experience configuring and debugging RF devices on Linux-based platforms
- Hands-on experience with RF/system modeling tools (MATLAB, Simulink, NS-3) and lab instrumentation (VNA, spectrum analyzer, OTA chambers)
- Experience supporting DVT, FCC/CE certification, production RF tuning, and large-scale operational deployments
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